Article View: comp.sys.ibm.pc.rt
Article #1268COMP.SYS.IBM.PC.RT: IBM RT - Hardware - Frequently Asked Questions
From: Mark Whetzel
Date: Mon, 28 Jun 1993 12:01
Date: Mon, 28 Jun 1993 12:01
1752 lines
81343 bytes
81343 bytes
Archive-name: ibm-rt-faq/hardware
Last-modified: Mon Jun 28 06:02:50 CDT 1993
Version: 1.2
Frequently Asked Questions for: IBM RT system hardware
Posted around the first of each month to comp.sys.ibm.pc.rt.
This is the first of three FAQ's dedicated to the IBM RT processor.
The other FAQ's are dedicated to aspects of the RT processor when used
with different operating systems.
AIX issues will be filed in the archive name: ibm-rt-faq/aix
AOS issues will be filed in the archive name: ibm-rt-faq/aos
[ Note: The AIX and AOS FAQ's are not yet ready.. sorry for the
delay in getting them posted... MW ]
This particular file will cover general hardware questions about the
IBM RISC processor known as the RT PC. The IBM RT is known also as
an IBM model 6150, 6151 or 6152 machine.
The hardware information presented here is intended to be independent of
the operating system that is running on the system. There are several
companion FAQ's I have compiled on operational differences of the RT
hardware and software when being used with the different operating systems
available. If you notice a particular hardware feature that is only
supported under one particular OS, let me know, and I will move it to
the appropiate OS specific list.
This list is organized as a digest for newsreaders that can handle it.
Each "digest page" generally covers one topic or Question/Answer .
You can jump to a particular topic by searching for that index key
(such as H.10) in position 1 of this list.
Direct inclusions of information by some submitters is framed with a
line of "==**==**" repeating across the page.
In order to build up a better FAQ base, E-mail your contributions.
I will respond back to you via mail on your submission.
This FAQ is a work in progress. Some entries are incomplete, and other
information may be missing. Places with ????? denote areas needing
more work or information. Areas that I have made personal comments
on are enclosed in square brackets [].
For AIX RT submissions E-mail to: aix-rt@antimatr.hou.tx.us
For AOS RT submissions E-mail to: aos-rt@antimatr.hou.tx.us
For MACH RT submissions E-mail to: mach-rt@antimatr.hou.tx.us
For general Q&A submissions (hardware and other stuff) E-mail to:
faq-rt@antimatr.hou.tx.us
Input is always welcomed for making this a better list.
Style, grammar and spelling notes are also welcome. Sometimes
it seems that my brain operates faster than my fingers can type. :-)
Other comments and correctons should be sent to the author:
Mark Whetzel
DOMAIN addr: markw@antimatr.hou.tx.us
BANG address: ..!menudo!lobster!antimatr!markw
Daytime work number 8AM-5PM CST Mon-Fri VOICE: (713) 963-2544
Changes for this posting:
1) More RT history notes.
2) Corrected some phone numbers
3) NSFnet information
4) Minor reformatting to some sections.
-------------------------
Index to the IBM RT - Hardware FAQ.
1.0 General Hardware questions
H.1 What is an IBM RT and some of it's history?
H.2 What types of processors were made?
H.3 How fast are the different models of RT?
H.4 Can you upgrade from one processor type to another?
H.5 How can I tell what kind of processor type is installed?
H.6 Where can I get parts for RT's?
H.7 What adapter cards are supported in an RT running AIX V2.
H.8 What IBM perhiperials were available?
H.9 What cables are available?
H.10 What is the pinout of the 6150 serial ports?
How do I make my own RS232 cables compatible for use with AIX.
H.11 What is the pinout of the 6150/6151 Mouse/Tablet port?
H.12 What is the pinout of the 6150/6151 keyboard port?
H.13 Can I use a Non-RT keyboard on an RT?
H.14 How do I get a parallel printer attached to an RT?
H.15 What are the switches on the Megapel adpater for?
Technicial information on Megapel adapter and display.
H.16 AT Co-Processor information.
H.17 How can I get the maximum data on a 6157 tape drive?
(Also covers different types of tapes to use.
flags for 'backup' and 'tar'.)
H.18 What hard disks can be used in an RT?
What value is the ESDI terminator resistor for an E70 drive?
H.19 What is the difference between an R70 and an E70 disk drive?
H.20 What are the characteristics of the various IBM RT disk drives?
H.21 What SCSI devices can be attached?
H.22 What do the LED's mean during power on.
H.23 What does LED code xx mean (during runtime)?
H.24 What is different about the RT I/O slots.
What cards will run in slot 8.
H.25 How do I run diagnostics.
H.26 Serial port cards maximums and limitations.
H.27 What are the switches on the 3278/79 adpater?
H.28 Jumper location and information on AT Fixed disk adapter.
H.29 Jumper locations and information on ESDI adapter.
H.30 Jumper locations and information on EESDI adapter.
H.31 Jumper locations and information on the 'PORTED' EESDI adapter.
H.32 IBM 9332 Disk drive information.
H.999 Acknolowgements and copyright information.
-------------------------
H.1 - What is an IBM RT and some of it's history?
The IBM RT is a RISC based processor designed by IBM, and unique to
that platform. The RT was first announced by IBM in January 1986.
The processor is generally refered to as 032 processor. In some
documentation it is also refered to as the 'ROMP' processor.
[ I have had some excelent feedback on the ROMP name and a little
on the RT's history. See the submtters below my notes. More information
on the RT's history is always welcomed. - MW ]
The RT PC Advanced System Processor has a 32-bit Reduced Instruction
Set Computer (RISC) architecture developed by IBM and implemented in
a 1-micron CMOS technology. It has sixteen 32-bit general purpose
registers and uses 32-bit addresses and data paths. The
microprocessor is controlled by 118 simple 2- and 4-byte
instructions. An IBM-developed advanced memory management chip
provides virtual memory address translation functions and memory
control. It provides a 40-bit virtual address structure capable of
addressing one terabyte of virtual memory. Internal processor
organization enables the CPU to execute most register-to-register
instructions in a single cycle.
The model 115/125 RT PC with their FAST ECC memory, is capable
of providing the processor with a 32-bit word of data plus ECC each
100 nsec cycle. This memory consists of 40 1-megabit IBM RAM chips.
These chips are the same megabit technology used in the IBM 3090.
The model 130/135 version of the processor uses an 80 nsec cycle time
with the maximum of 16 Megabytes of real memory installed on the
processor card.
The IBM RT has had a varied life even from it's initial announcement.
Most industry watchers considered the RT as "not enough power, too high
a price, and too late". Many thought that the RT was part of IBM's
Personal Computer line of computers. This confusion started with it's
initial name, "IBM RT PC". Initially, it seemed that even IBM thought
that it was a high end Personal Computer given the initiallly stunning
lack of support that it received from IBM. This confusion even was
reflected in the design of the manuals for the RT, they are the same
odd size three ring binder (except longer), with slip cases like the
original IBM PC manuals. Condidering the RT's modest processing power
(when first announced) coupled with announcements later that year by
some other workstation vendors made most industry analysists
question IBM's directions. To be fair, AIX for the RT was IBM's first
*public* foray into UNIX. IBM had a very tough task ahead of them,
completely changing how traditional UNIX design had been done. The VRM
(Virtual Resource Manager) is the real operating system of the RT, and
controls all the hardware. AIX is running as a guest OS, in a similar
fashion to the VM product of IBM's mainframe processors.
The lack of software packages and IBM's somtimes lackluster support of
AIX, plus the sometimes unusual changes from traditional UNIX operating
system defacto standards caused most software suppliers to be slow to
embrace the RT and AIX. The RT found it's home mostly in
the CAD/CAM and CATIA areas, with some inroads into the Scientific
and educational areas, especially after the announcement of AOS and
substantial discounts for the Educational community.
The RT also found use as shopping store control systems, and interface
system between IBM's larger mainframes and some of its point of sale
terminals, store control systems and also machine shop control
systems.
One of the RT's claim to fame was it's use as packet switch hubs for part
of the internet backbone, utilizing specially designed hardware communication
sub-processors and specially written operating system control software.
[More information on this would be welcomed! Start/stop dates,
number of machines used at one time, ect.. - MW]
==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==
Submitter: David Snearline <davids@engin.umich.edu>
NSFnet used the 6151 desktop model RT's for the NSS's (Nodal Switching
Stations). Each RT in the group had two interface cards: one IBM token
ring, and one other interface (ethernet, T1, etc). A typical NSS would
look like:
+---- local ethernet
|
+---+
| | IBM RT
| |
+---+
| |
| | +---+ IBM RT
| +--| |
Token Ring ----> +----| |---- T-1 to another NSS
+---+
(more RTs here)
Except for backup links in some places, most of the RT NSS's have been
replaced by RS/6000's, which have all of the cards in one workstation.
Most of the RTs are sitting around, waiting to be used for parts or
dismantled. ANS/Merit could probably give you more details on when this
switchover occurred, but I believe that November 1992 was one of the
official changeover dates.
==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==
Submitter: <gerald@vnet.IBM.COM> (Gerald Oskoboiny)
Last night I was reading "Computer Wars" by Charles H. Ferguson and
Charles R. Morris (ISBN 0812921569, Random House, 1993), and it has
the code names of the RT and other projects. I forget most of the details,
but it is very interesting reading. It explains how IBM had RISC
technology in 1968 but mismanaged it until the disappointing RT was
released in 1986. As far as "history of the RT" goes, this book explains
it all.
==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==
Submitter: mike@neutron.amd.com (Mike Johnson)
Newsgroup: comp.arch Subject: Re: First Commercial RISC Computer
That's Research OPD Mini Processor. OPD = Office Products Division.
ROMP was originally designed to be used in office products, primarily
text editing systems such as the IBM Office System/6 and DisplayWriter.
The architectural work started in late spring of 1977, as a spin-off of
the T.J. Watson Research 801 work (hence the "Research" in the acronym).
Most of the architectural changes were for "cost reductions," such as
adding 16-bit instructions for "byte-efficiency"--a main concern at IBM
at the time.
The first chips were working in early 1981. The delay from architecture
to working chips was caused mainly by building two models of the chip in
TTL: an emulator that just executed the instruction set and a
nodal-equivalent model that was more-or-less an exact duplicate of the
chip (about 6000 7400-series DIPs plus a number of IBM bipolar gate
arrays and static RAMs). The delay was also caused by two major revs to
the architecture: one change to a 32-bit architecture from a 24-bit
architecture (I'm serious), and another to support demand paged
virtual memory (the implementation supported out-of-order loads, so
precise interrupts were hard to come by).
ROMP was arguably the first working commercial RISC. The arguments
would be over whether or not it was a "true" RISC and whether or not
one could count it as a commerial product in 1981, since it didn't
actually ship until 1986. *This* delay, in my opinion, was caused by
overly ambitious software plans, in the form of porting an IBM version
of UNIX to a virtual software layer called VRM (Virtual Resource
Manager), rather than porting Berkeley UNIX directly to the hardware.
The path from having hardware to developing VRM to porting UNIX and
then getting VARs to write applications was just too long--a problem
that IBMs resources couldn't overcome.
I was the first member of the ROMP design team--something I credit to
random chance rather than any personal expertise (my graduate work
at the time had been in digital control systems). ROMP was a good way
to learn microprocessor design by learning what *not* to do.
I understand that ROMP was also used in an IBM laser printer, but I
don't have any first-hand knowledge that this is true.
==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==
-------------------------
H.2 - What types of processors were made?
There are 2 basic types of machines called an RT.
The tower model, IBM machine number 6150.
The desktop model, IBM machine number 6151.
There exists a special version machine that used the same processor,
available only to educational sites that is a hybrid PS/2 model 60
with a special mirco-channel board version of the 032 processor.
That machine was IBM machine number 6152. The 6152 ran only the AOS
operating system downloaded from another IBM 6150 or 6151 also running
AOS, via a lan TCP/IP interface (either Token-ring or Ethernet).
I am not sure the 6152 machine can rightly be called an RT, as the
only interface boards used were the same as used in PS/2 machines.
This version may be somewhat rare, and I have never seen one.
The rest of this list will not cover the 6152 machine.
More information on the 6152 processor is covered in the AOS FAQ
posting in this newsgroup.
[ More details about the mysterious 6152 model RT would be intresting.
How widespread is it? History? Are any still running? - MW ]
There are three versions of the 6150/6151 processor card, and several
unique RT models using each version of the card. IBM used the different
model numbers to designate different base configurations of
processor speed, installed main memory and installed hard disks.
Model nubmers can be deciving, as some machines may have been
field upgraded to different models and/or processor types.
The standard 032 processor card was in models:
10, 15, 20, 25 and A25.
- 1MB memory was standard, with expansion available,
via 1MB, 2MB or 4MB memory boards.
- Optional Floating Point Accelerator was also available.
- AIX 1.0 and 1.1 (RT version) initially shipped with these models.
- 170ns processor cycle time.
- The models 10, 20 and A25 were discontinued October, 1988.
- The models 15, and 25 were discontinued May, 1990.
The Advanced processor card was in 2 different types:
The 115 which had 4MB memory ON the processor card,
available only on the desktop 6151.
The 125 and B25 models which had all their memory on external
FAST ECC 4MB memory cards, used in the 6150 tower models.
- Memory expansion via 4MB FAST ECC memory boards.
- Built in 20Mhz Motorola 68881 floating-point processor.
- Optional Advanced Floating Point Accelerator was also available.
- These models required AIX 2.1 as a mininum.
- 100ns processor cycle time.
- Later 8MB FAST ECC memory boards became available.
- The models 115, 125 and B25 were discontinued May, 1991.
The Enhanced Advanced processor card:
Available only with the model 135 and B35 (6150 tower), and with
the model 130 (6151 desktop).
- On-board 16 MB main memory standard.
- Motorola 68881 was removed and the Enhanced Advanced Floating
Point Accelerator was made a standard feature.
- These models required AIX 2.2 as a mininum.
- 80ns processor cycle time. (Much faster!)
- Rated by IBM at 5.6 Mips.
- The models 130, 135 and B35 were discontinued May, 1991.
Enhanced Advanced processors are easily recognized. Soldered directly
to the processor board are 16 'SIMM like' memory boards sticking up on
about 1/2 of the processor card. All processor cards are installed
in the special board slot labeled 'A'.
The A## and B## model machines shipped without the native keyboard, and
instead used a preinstalled 5080 attachment interface card allowing the
RT processor to share the keyboard that was attached to the 5080
grahphics system hardware. Via a special interface card, the 5080
lighted program function keypad (LPFK) and dials unit (three variable
position X,Y and Z controls) could be attached either to the RT or
the 5080 graphics system. Primarly used in a CADAM and CATIA setup
running AIX.
-------------------------
H.3 - How fast are the different models of RT?
[ I would like to see some results from users with later benchmark
tests on both the native C and Fortran compilers.
Tests with a 135 processor using the last available compiler patches
from IBM, and side-by-side tests with the now available GCC compiler
for AIX RT would be an intresting addition to this section.
I would like to see how those compilers stack up to each other
in performance tests. I would also like to see how the RT still
stands using some of the newer industry standard benchmark programs.
Comparisons against other popular processors now in use would be
intresting. This information may be dated, considering that IBM
continued to improve the performance of the native C compiler
available with the AIX V2 operating system.
Comparison running AOS or MACH would also be intresting to see how
much difference compiler and OS technology has on overall performance.
Challenge anyone? - MW ]
Note: These performance numbers are dependent on various factors,
including complier update levels, language, Fortran or C,
compiler options, and instlled floating point accellerators.
Times given are using the AIX operating system.
These numbers were obtained from an IBM announcement letter
number 188-120 Dated July 19, 1988, announcing the release
of the 135 Enhanced Processor.
Refer to that IBM announcement for more complete information.
Test Jan 86 Feb 87 July 88
=====================+===================================================
Dhrystones | 1780 6500 8300 (1)
| 10400 (2)
=====================+===================================================
FP KWhetstones |
(double precision) |
Standard | 20K 810K 2020K
Optional | 200K 1600K N/A
=====================+===================================================
LINPACK KFlops |
(double precision) |
Standard | -- 80K 410K
Optional | 37K 300K 780K (3)
=====================+===================================================
Disk Maximum |
- Capacity | 210Mb 5810Mb 7460Mb
- Data Rate |
(Mbytes/sec) | 0.26 1.08 1.08 (4)
=====================+===================================================
Notes: (1) Benchmark run on an RT System model 125.
(2) Benchmark run on an RT System model 135.
(3) Using specially coded basic linear algebra subprograms.
(4) 310 Meg Fixed disk has a 928 Kbps data rate.
The date in the columns above refer to IBM announcement letters
for the RT, released on the the date indicated.
Jan 86 generally refers to the Standard 032 processor
available with models 10, 15, 20, 25 and A25.
Feb 87 generally refers to the 115 and 125 models and AIX V2.1
enhancements.
July 88 refers to the announcment of the 130, 135 and B35 models,
and AIX V2.2 enhancements.
The IBM announcment letter partially quoted above indicates that the
benchmarks were achived by running the Dhrystone benchmark V1.1 on
AIX/RT Operating system V2.2 after installing the June 1988 updates
to the C compiler.
-------------------------
H.4 - Can you upgrade from one processor type to another?
The general answer is yes. However, this is dependent on two things:
1) If you can find the necessary parts.
2) If the planar is of a particular hardware level.
The memory cards in the models earlier than the 115/125 are too slow
for the later Advanced Processor (125). That processor will only
allow use of the 'Fast ECC' memory cards available in either 4MB
or 8MB sizes, for a total of 16 Meg. If you have a two different sizes
of memory cards, the larger must be in slot 'C'.
The 135 model has all 16 Meg available SOLDERED to the processor
card and require no external slot C or D installed memory.
The Floating Point Accellerators only work when matched with the
correct type of processor.
Standard processor = Standard FPA or either a level1 or level2 AFPA.
Advanced processor [APC] (115,125 or B25) = Advanced FPA (level1 or 2).
Enhanced Advanced processor (130,135,B35) = Enhanced Advanced FPA
(level 2 board only).
The standard FPA board is easily recognized as it is a single board, and
the slot fingers are uniquely placed so as to fit only in slot B on the
6150 and 6151. The later model FPA is a double layer board, constructed
so as to still fit in one slot. Descriptions of level1 and 2 FPA boards
are described in the adapters section (H.7) below.
To perform an upgrade from the slower version of the 032 processor to
the APC (115/125) needs different Fast ECC memory cards, and a faster
FPU. To upgrade from a APC to an EAPC (130/135), you must remove any
installed memory boards because the EAPC has onboard memory. The
Enhanced processor also requires the Enhanced FPU.
The faster processors also require later versions of AIX upgrades
that were minimum for each model, and the appropiate minimum memory
for the type of processor.
[ I am still searching for more complete upgrade information.
IBM had some specific minimum planar serial numbers that
were required for the faster processors, but I do not have
any of that information. Anybody? - MW ]
-------------------------
H.5 - How can I tell what kind of processor type is installed?
For a quick determination of the processor type, observe the LED's
during a power on IPL. The general sequence for initial 'Power On
Self Tests' (POST) codes is:
88, xx, zz, yy, 09, 10, 14 (long), 15, 16, 21, 22
The XX, YY and ZZ LED values will have a value of:
XX YY ZZ
01 03 05 = Standard 032 processor. (010,020,025,A25)
1c 3c 5c = Advanced 032 processor. (115,125 and B25)
1u 3u 5u = Enhanced Advanced 032 processor. (130,135,B35)
The XX and YY codes stay around the longest, and are easiest to see.
A few other codes fly by as well, but try as I could, I could not
tell what they were. Other codes can show up, depending on what other
I/O boards are found in the system during power up. If any code
remains in the LED's for over 5 minutes, a failure had been found
with the system during self tests. All LED codes after the code 22
(boot record processing), are dependent on the operating system being
loaded into the RT. LED codes prior to the 22 are placed in the LED
display by the Power On Self Tests (POST) of the RT planar. Almost
all the other LED codes are displayed by Loadable POST (LPOST) routines
invoked during VRM initialization and IPL. Obviously systems NOT
running AIX with VRM will have different LED codes.
-------------------------
H.6 - Where can I get parts for RT's?
[ This section needs more entries, addresses and/or phone numbers.
Third party suppliers or used equipment dealers known to deal
in RT hardware would be great. - MW ]
Parts at this time are still available from IBM.
At this time, IBM does not have any announced discontinuance of parts.
Most interface boards and monitors are still being sold, and are
available NEW from IBM. IBM still offers maintence contracts for RT
computers and equipment.
IBM parts may be ordered by calling IBM-Direct, 1-800-426-2468.
Other IBM numbers:
1-800-426-7378 Service/Maintenance
1-800-426-2468 Supplies/Dealer Referral
1-800-426-3333 Information
However, IBM's prices may be a little steep.
Some used and surplus parts houses from time to time get RT's, but
not on any regular basis. Lots of times, they are broken up for
some of the re-usable parts, and the rest junked. :-(
Dickens Data Systems used to make special 8, 16 and 64 port async
adapters for RT's. They also sold device drivers for various SCSI
attached devices, including 9-track tape. I am not sure if they
still make any of these.
==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==
Submitter: rrogers@chinet.chinet.com (Richard Rogers)
[ I have made a few editorial changes and corrections to
Richards submission, mostly phone number corrections or
address/contact corrections. - MW ]
In searching for a source of RT Megapel cards I put a call out over the
net for RT parts sources and said that I would summarize back to the net.
Two responses were received, so a personal thank you to Jon Brinkmann and
Matt Rush. All leads were contacted with the following results:
Dickens Data Systems 1-800-848-6177
Don't inventory RT parts, but do have some RT
add in hardware and software.
Dickens Technologies 404-418-0630
Carry all parts.
Next Generation Systems 313-435-5086
Contact: Randy Hastings
Alpine Computer Sales
P.O. Box 1500
1052 Hwy 395
Gardnerville, NV 89410
(800) 274-5876
Carry all parts.
International Data Products
4445 W. 77th St.
Mpls, MN 55435
(714) 851-0222
Don't inventory RT parts any longer.
RGdata Inc.
975 Jefferson Road
Rochester, NY 14623
(716) 424-7500
Carry all parts.
Contact: Dave Gerritsen
Dempsey Business Systems
18377 Beach Blvd., Suite 323
Huntington Beach, CA 92648
(800) 637-2620
Carry all parts, "large quantity".
Contact: Steve
We purchased purchased 5 cards and cables from Dave Gerritsen at RGdata.
Everything arrived OK. We've had good experiences with RGdata in the past,
I just didn't realize that they carried RT parts.
==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==
-------------------------
H.7 - What adapter cards are supported in an RT?
NOTE: See the OS dependent FAQ list for additional hardware that
may be supported by that operating system. The information
and part numbers shown below generally reflect AIX usage.
[ Feature code numbers and part numbers, where known, are shown
in parenthesis like this (#feature,partnum).
Part numbers DO change with EC (Error Correction) changes
and production run changes. These numbers should be
able to be cross-referenced if no longer correct. - MW ]
Memory cards -
- For Model 10,15,20,25,and A25.
* 1Mb Memory Expansion (#8222,6848223)
* 2Mb Memory Expansion (#4739,6299228)
* 4Mb Memory Expansion (#3156,61X6157)
- For Models 115,125 and B25 only
(for use with RT PC Advanced Processor Board 08F3639 only)
* 4Mb Fast Memory Expansion (#7004,61X7005)
* 8Mb Fast Memory Expansion (#7008,61X7009)
- Note: The model 130,135 and B35 are at their maximum
16MB of memory soldered on the processor card.
Perhiperial adapters -
* Small Computer System Interface Adapter (#7000,61X7001)
- Fuse 1.0A 250V (0855253)
Fixed Disk adapters -
* PC AT Fixed Disk and Diskette Drive Adapter (#3428,79X3431)
* ESDI Magnetic Media Adapter (#6341,00F2160)
* RT PC Extended ESDI Magnetic Media Adapter (#????,08F3766)
* RT PC Portable ESDI Magnetic Media Adapter (#3506,08F3506)
(usable only in models 115/130/125/135/B25/B35)
Tape Drive adapter -
* RT PC Streaming Tape Drive Adapter (#4797,6299222)
Display Adapters -
* IBM Monochrome Display and Printer Adapter (#4900,8529148)
* IBM PC Enhanced Graphics Adapter [EGA] (8654215)
- IBM PC Graphics Memory Expansion Card (6323468)
* RT PC Advanced Monochrome Graphics Display Adapter (00F2357)
* RT PC Extended Monochrome Graphics Display Adapter (6299351)
* RT PC Advanced Color Graphics Display Adapter (00F2350)
* Megapel Display Adapter (#7658)
- has two boards fastened together
- Display Controller (6247666 or 6247529)
- Display Processor (6247662)
Communication adapters -
* RT PC 4-Port Asynchronous RS-232C Adapter (UN-Buffered)
(#4763,???????)
* RT PC 4-Port Asynchronous RS-422A Adapter (UN-Buffered)
(#4764,???????)
* RT PC 4-Port Asynchronous RS-232C Adapter (Buffered)
(#1356,61X6339)
* RT PC 4-Port Asynchronous RS-422A Adapter (Buffered)
(#1357,79X3782)
* IBM PC AT Serial/Parallel Adapter (#0215,8286147)
* IBM PC 3278/79 Emulation Adapter (long) (#????,???????)
(Early version is long, and only one may be installed,
and has no switches to alter memory addresses.)
* IBM PC Advanced 3278/79 Emulation Adapter (#5050,8665792)
(later version is short, has switches, and a maximum
of 4 may be installed.)
* IBM PC Network Adapter - discontinued 07/88. (#0213,8286171)
* IBM Token-Ring Network RT PC Adapter (#3797,67X0432) Early version
* IBM Token-Ring Network RT PC Adapter (#3797,69X8142) Late version
* RT PC Multiprotocol Adapter (#4762,08F3193)
* RT PC Baseband Adapter [Ungerman-Bass Ethernet] (#6810,61X6809)
* 8-Port Asynchronous Mil-Std 188 Adapter (#3169,08F3170)
* 8-Port Asynchronous RS-232-C Adapter (#3165,08F3166)
* 8-Port Asynchronous RS-422-A Adapter (#3171,08F3172)
Special -
* RT PC Floating-Point Accelerator (#4758,6299220)
(for use with RT PC Processor board 79X3766 only)
* Advanced Floating-Point Accelerator [115,125,B25 only]
Note: There are two versions of this card:
- level 1 (#6814,61X6814) (bar code A117Kxxxxxx) can be used with
either the original processor board (P/N 79X3766), or the
Advanced Processor board (P/N 08F3639).
- level 2 (#6815,08F3589) (bar code A1206xxxxxx)
use with RT PC Processor Board 79X3766, or
RT PC Advanced Processor Board 08F3639, or
RT PC Enhanced Advanced Processor Board 08F3587.
* Enhanced Advanced Floating-Point Accelerator [130,135,B35 only]
(#6815,???????) [is this the level 2 board? - MW]
* Personal Computer AT Coprocessor Card (#4756,6299226)
- AT Math processor chip [80287], (#0211,8286127)
* 5080 Peripheral Adapter (#7561,6487562)
- used to attach the 5085 dials feature and the 5085 Lighted
Program Function Keyboard feature.
Identifyable by the three 10-pin MODU connectors
* 5080 Attachment Adapter (#7860,6247851)
- used to attach the RT processor to the 5085 Graphics processor.
* 5086 Model 1 Attachment Adapter (#7876,???????)
* S/370 Host Interface Adapter (#7893,6247891)
- used to connect the RT processor to the IBM 5088 graphics
controller.
* Expansion unit adapter (#3540,08F3727)
- used to attach the RT PC 6192 expansion unit.
-------------------------
H.8 - What IBM perhiperials were available?
There may be other devices supported by other operating systems.
Refer to the one of the OS specific FAQ lists for more information.
The following IBM peripheral devices were officially supported by
IBM for use on the 6150 and 6151:
[ Feature code numbers and part numbers, where known, are shown
in parenthies like this (#feature,partnum) - MW ]
Storage Devices -
Floppies:
* IBM PC AT High-Capacity Diskette Drive (68X3752)
* IBM PC AT Dual-Sided Diskette Drive (68X3753)
Fixed Disk drives -
* 40Mb Fixed Disk Drive [ R40 ] (#4735,6299235)
* 70Mb Fixed Disk Drive [ R70 ] (#6941,61X6942)
* 70Mb Extended ESDI Fixed Disk Drive [ E70 ] (#3988,79X3989)
* 114Mb Extended ESDI Fixed Disk Drive [ E114 ]
(#3272,00F2272 or 00F2273)
* 310Mb Extended ESDI Fixed Disk Drive [ E310 ] (#3310,08F3358)
* 310Mb Extended ESDI Fixed Disk Drive [ H310 ] (#3310,08F3358)
[ this drive is really a Maxtor XT-4380E, wiht a minor
modification for what Maxtor calls a 'short index pulse' ]
* 9332 DASD Models 240, 250, 440, and 450
* 9309 Rack Enclosure Models 1 and 2
Tape Devices -
* 6157-001 Streaming Tape Drive (QIC 24)
* 6157-002 Streaming Tape Drive (QIC 150)
Displays -
* 5151 Personal Computer Display [PC XT monochrome display]
(8529171 - low voltage)
(8529209 - high voltage [220V? - MW] )
* 5154 Personal Computer Enhanced Color Display [ EGA ]
(6321035 - model 1 low voltage)
(6321049 - model 2 high voltage Northern Hemisphere)
(6321036 - model 3 high voltage Southern Hemisphere)
* IBM PC Display Stand (#????) (for EGA display)
* 5081 Display Models 11, 12, 16, and 19
* IBM 6153 Advanced Monochrome Graphics Display
* IBM 6154 Advanced Color Graphics Display
* IBM 6155 Extended Monochrome Graphics Display
Pointing devices -
* 5083 Tablet Models 11 and 12 (NO LONGER AVAILABLE)
* IBM 5083 Model 11A tablet. (6248516)
* IBM 5083 Model 12A tablet. (6248515)
* Mouse (#8426,00F2384) Also called a 6100 pointing device.
Special devices -
* Lighted Program Function Keyboard (#4710)
* Dials (#8710)
* IBM 5085 Graphic display system.
Printers -
* 3852 Model 2 Color JetPrinter
* 4202 Proprinter XL
* 5842 Modem
* 6184 Color Plotter
* Pageprinter (3812).
(Requires special RT font diskette, #3065 on 3812.)
* 5201 QUIETWRITER Printer, Models 1 and 2
(Model 2 supported in character mode and 5152 compatible
graphics mode only).
* 4201 Proprinter
* 5152 Graphics Printer (NO LONGER AVAILABLE)
* 5182 Color Printer (NO LONGER AVAILABLE)
* 6180 Color Plotter Model 1
* 7371 Color Plotter
* 7372 Color Plotter
* 7374 Color Plotter
* 7375 Color Plotter Model 1 and 2
* IBM PC Printer Stand (#5614)
ASCII Terminal devices -
* 3151 and 3161 ASCII Display Station
* 3162 and 3163 (in 3161 mode).
* ASCII terminals that adhere to ANSI 3.64 protocol as implemented
by DEC VT100 and DEC VT220 (tm) or equivalent.
VT-100 and VT-220 are Registered Trademarks of Digital
Equipment Corporation.
-------------------------
H.9 - What cables are available?
Feature codes, where known are listed like this (#xxxx).
Part Num Description
======== ====================================================
61X6937 Cable, fixed-disk and diskette drive positions A-D
79X3777 Cable, fixed-disk and diskette drive positions A-E
6298359 Cable, power distribution.
6450217 PC AT Communications Cable (#0217)
(3 Meters 9-pin to 25 pin)
6450242 IBM PC AT Serial Adapter Connector Cable (#0242)
(10-inch DB 9-pin to 25 pin)
79X3914 RS232 Terminal attach cable. (#????)
(3 meters 10-pin MODU to DB25 pin MALE
use with 8-port, 4-port or native serial ports)
6298526 RS232 Terminal attach cable. (#3913)
(3 meters 10-pin MODU to DB25 pin FEMALE
use with 8-port, 4-port or native serial ports)
6298525 RS232 Serial Printer attach cable.
(3 meters 10-pin MODU to DB25 pin FEMALE
use with 8-port, 4-port or native serial ports)
6294704 RS232 Modem attach cable.
(3 meters 10-pin MODU to DB25 pin MALE
use with 8-port, 4-port or native serial ports)
1525612 IBM PC Printer Cable (#5612)
79X3468 SCSI interface card to device cable (#3468) (8 Meters)
79X3470 SCSI device to device cable (#3470) (1 Meter)
6294812 Modem Cable RS232C for Multi-Protocol adapter
( 3 meters 16 Pin MODU to DB25 male )
6294814 Autocall Cable RS366 for Multi-Protocol adapter
( 3 meters 16 Pin MODU to DB25 male )
6294816 Modem Cable X.21 for Multi-Protocol adapter
( 3 meters 16 Pin MODU to 15 pin male )
08F3157 8-Port RS232C Fan-out cable assembly (#3157)
( 6 foot cable to fanout box with 8 10-pin MODU connectors)
(also used with MIL-188 adapter)
08F3158 8-Port RS422A Fan-out cable assembly (#3158)
( 6 foot cable to fanout box with 8 6-pin MODU connectors]
6487586 RT PC 5083 Tablet cable kit. (#7586)
- used only to attach a model 1 or 2 tablet to an RT.
not needed for 11A or 12A tablets.
6487563 RT PC 5080 Peripheral Adapter cable kit
6247861 RT PC 5080 Attachment cable kit. (#7861)
Includes two cables, terminator, diskettes and documentation.
22F9207 RT PC Expansion unit cable, 2m.
-------------------------
H.10 - What is the pinout of the 6150 serial ports?
How do I make my own RS232 cables compatible for use with AIX?
The funny connector on the back of the 6150 labeled 'S1' and 'S2'
are the native serial ports built into the system planar board
of the 6150 tower models of the RT. This connector is refered
to in the IBM hardware manuals as a MODU connector.
The 10-pin connector used on the native serial ports, is also used by
the fan-out box for the RT RS232 8-port card. These part numbers
for the connector were given to me by the IBM support center in
Austin, TX for the RiscSystem/6000. The 6000 has the same 10 pin
MODU connectors for the 6000's native serial ports, and is the
same connnector used by the RT's native serial ports.
AMP Product Corp.
Housing AMP P/N 102394-3
Cover AMP P/N 102541-3
Back Cover AMP P/N 102536-3
Ferrule AMP P/N 102903-3
Receptacle AMP P/N 2-87195-0
Receptacle AMP P/N 86491-4
Shield Kit AMP P/N 103125-2
You can also get a 10-pin MODU connector pre-wired to a DB 25 pin
male connector, used for the Risc/System 6000 and is a short stub
about 4 inches long. It is IBM P/N 00G0943. This stubby cable
will work just fine for connecting modems, and with a properly wired
extension able, for printers and terminals as well.
======================================================================
Looking INTO the connector pins in the back of the RT tower,
here is the pin-out assignments and functions. The connector on the
back of the RT tower model is a male MODU connector. This pinout
is the same for the IBM 4-port card, and the fan out box of the IBM
8-port card.
@ pin abb function
+-----------------+ T 1 TX = Transmited data from RT
| | T 2 DTR = Data Terminal Ready
| 1 2 3 4 5 | T 3 RTS = Ready to send
| | R 4 RI = Ring Indicate
| 6 7 8 9 10 | - 5 - No connection
| | R 6 RX = Received data to RT
+---------------+ R 7 DSR = Data Set Ready
R 8 CTS = Clear to send
R 9 CD = Carrier Detect
- 10 GND = Signal Ground
@ means T = RT transmits R = RT receives (listens)
======================================================================
RS232 Modem attach cable. Feature #4704, Part# 6298240 Option #6294704
IBM supplied cable is 3 meters long, with a 25 pin male connector.
This has worked for my modem attach.. I have not actually used a meter
on a STOCK IBM RT modem cable, but this works for me.
NOTE: Metering the IBM RS6000 stubby cable P/N 00G0943 matches this pinout.
Pin# 1 2 3 4 5 6 7 8 9 10 10-PIN MODU female
| | | | | | | | | |
| | | | | | | | +--+
| | | | | | | | | |
2 20 4 22 3 6 5 8 7 1 DB25 male connector
NOTE: pin 5 of the MODU connector is unused.
======================================================================
The following cable wirings were discovered by using a meter probe on
IBM RT RS232 cables and by opening the hoods on the DB25 connector ends.
IBM part numbers and option numbers listed where known.
They are still orderable from IBM the last time I checked.
======================================================================
RS232 Terminal attach cable. Feature #3913 Part# 6298526 Option# 6298186
Pin# 10 6 1 9 2 8 3 7 10-PIN MODU female
| | | | | | | |
| | | | | +---+ |
+--+ | | +--+ | | |
| | | | | | | | |
Pin# 1 7 2 3 4 5 6 8 20 DB25 Female connector
======================================================================
RS232 Serial Printer attach cable.
Feature #4803 Part# 6298525 Option# 6294803
Pin# 10 6 1 7 9 3 2 8 10-PIN MODU female
| | | | | | | |
| | | | +--+ | |
+--+ | | | | +--+ |
| | | | | | | | |
Pin# 1 7 2 3 4 5 6 8 20 DB25 female connector
-------------------------
H.11 - What is the pinout of the 6150/6151 Mouse/Tablet port?
Here is pin-out and information on the RT locator port.
More information is available from "IBM RT PC Hardware Technical
Reference" Volume 1 P/N 75X2032, Chapter 9 pages 9-24 thru 9-29,
and from Chapter 5, pages 5-131 thru 5-135 and page 5-145.
[ The connector is a AMP type, I don't have the P/N's of how to get the
parts to construct one - MW ]
Connector Specifications:
(view is looking into the connector (male receptacle) socket on the
back of the RT system unit.
+--------------+ 1 = ground.
| 1 3 5 | 2 = Transmit to device.
| | 3 = +12 Volts
- 2 4 6 - 4 = -12 Volts
| | 5 = +5 Volts
+----------+ 6 = Receive from device.
The RT standard locator device is a two button mouse.
The middle button on a three button mouse can be simulated by
pressing both buttons simultaniously, mostly used for X-windows.
Resolution: 25, 50, 100 or 200 counts per inch. Default=100.
Sampling rate: Programmable 10,20,40,60,80 or 100. Default=100.
Data modes: Stream (default), remote.
Scaling: Linear (default), exponential.
Protocol: RS232C, 9600 baud, async, full duplex,
1 stop bit, odd parity.
- Self test at power-on or when requested by system.
- The locator device is semi-intelligent and has 14 different
commands that it understands.
- 11 bit framing protocol.
IBM part numbers for the RT mouse are:
00F2384 Mouse. Also called a 6100 pointing device.
A IBM 5083 tablet may also be used as a locator device.
IBM part numbers for the 5083 tablet are:
6248516 IBM 5083 Model 11A tablet.
6248515 IBM 5083 Model 12A tablet.
6248522 Stylus for 11A or 12A tablet.
6248523 4-Button Cursor for 11A or 12A tablet.
6248524 Cable RT PC to 5083 for 11A or 12A tablet.
[ Has anybody gotten a NON-IBM RT mouse running on an RT? - MW ]
-------------------------
H.12 - What is the pinout of the 6150/6151 Keyboard port?
Here is pin-out and information on an RT keyboard.
More information is available from "IBM RT PC Hardware Technical
Reference" Volume 1 P/N 75X2032, Chapter 9 pages 9-3 thru 9-23,
and from Chapter 5, pages 5-85 thru 5-114.
[ The connector is a AMP type, I don't yet have the P/N's of how to get
the parts to construct one. Anybody? - MW ]
Connector Specifications:
(view is looking INTO the female connector socket on the cable attached
to the keyboard)
+--------------+ 1 = +5 Volts
| 5 3 1 | 2 = Keyboard Data
| | 3 = Speaker Signal
- 6 4 2 - 4 = Speaker Return (+5V)
| | 5 = Ground
+----------+ 6 = Clock (diagrams in the book seem
to indicate that clock is generated
BY the keyboard)
Microcomputer in keyboard performs following functions:
- Self test at power-on or when requested by system.
- keyboard scanning.
- Buffering of up to four key scan codes.
- Executing the hand-shake protocol requred by each scan code transfer.
- full-duplex serial interface
- communicates with a 8255A PIO chip and a 8501 microprocessor
in the RT planar.
- 11 bit framing protocol.
IBM part numbers for the RT keyboard are:
1392366 Keyboard, United States English.
1392374 Keyboard, United Kingdom English.
1392373 Keyboard, Canadian-French.
Ten other part numbers are listed for other language layout keyboards.
-------------------------
H.13 - Can I use an AT keyboard on an RT?
NO. While most of the signals are the same, there are four
major differences:
1) There is a speaker in the keyboard.
2) The physical connector is not the same.
3) Some of the scan codes are different.
4) Some of the programing commands are not implemented in
the AT keyboard.
Difference 1 and 2 are managable, but 3 and 4 imply some way
is needed to alter the keyboard ROM chips, or basic hardware.
[ ANY input on how to hack a keyboard for RT compatibility is
gladly welcomed! - MW ]
-------------------------
H.14 How do I get a parallel printer attached to an RT?
[ This information has been taken from the AIX manuals, if there
is a difference for AOS, let me know. - MW ]
There are three different ways to attach a centronics parallel
printer to the RT.
A maximum of two parallel printer interfaces are supported, but
only by using a AT serial/Parallel card, jumpered at the
secondary printer port address.
1) AT Serial/Parallel interface card.
Parallel port primary address = 3BC
Parallel port secondary address = 278
2) PC/XT Monochrome/Parallel printer card.
Parallel port only address = 3BC
No jumper available to disable this port.
3) Megapel card has a parallel interface on it.
Parallel port only address = 3BC
Swich 1 position 2 enables/disables the port.
Shipped disabled from factory.
-------------------------
H.15 What are the switches on the Megapel adpater for?
Technicial information on Megapel adapter and display.
Switch 1 is located on the display processor card (the one with the
25-pin parallel printer connector on it).
1 Not used. Must be set to OFF.
2 On = Enable printer port. Off = Disable printer port.
3 Enable CGA emulation mode. Off = Normal Megapel mode.
4 Not used. Must be set to ON.
[ Anybody know what the 'not used' switches do? - MW ]
Megapel and display technicial information:
Slot position Must be installed in slots 4 and 5 ONLY.
I/O Addresses 0930-094F
Memory ddresses: 0B8000-0BBFFF CGA emulation mode.
C00000-C3FFFF Adapter data space.
D60000-D7FFFF Adapter program space.
DMA channel 7
Interrupt level 11 (shared)
Horizontal Frequency 63.36 Khz
Vertical Frequency 60 Hz, Non-Interlaced.
Display connector 3-pin Video (D-shell)
-------------------------
H.16 - AT Co-Processor information.
[ Watch this space for more details! - MW ]
o IBM PC AT Math Coprocessor (#0211)
o IBM PC AT 512Kb Memory Expansion Option (#0203)
-------------------------
H.17 - How can I get the maximum data on a 6157 tape drive?
[ While the 6157 hardware is the same, and the type of tape used
is the same, the default values for the tar command for AOS may
be different than AIX. - MW]
==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==
Submitter: crow@austin.ibm.com (David L. Crow)
IBM Advanced Workstations Division
Date: 30 Apr 92 14:12:59 GMT
>We have the 6157-002 model (150Meg, I think) and for some
>reason, it needs three tapes to backup only 240Meg of data.
DC 600A tapes should hold 118 MB of data. Of course this is somewhat
dependent on the RT's ability to keep the data moving to the tape as it
is streaming. If there is a break in data bacause the backup command
can't get it there quick enough, then you'll lose some of your capacity.
Here is an item from ASKQ two or three years ago that describes what
flags to use to make sure that you get the maximum capacity out of your
6157. This probably could go into the FAQ (except the FAQ is pretty
much just for AIX Version 3).
============================================
Subject: 6157 TAPE INFORMATION FOR AIX BACKUP COMMAND
The correct descriptions for the -s and -d flags of the AIX backup
command are:
-slength
Specifies the length of the usable space on a tape medium. This is a
combination of the physical length and the number of tracks on the
tape. The default "length" is 2700.
To get the value for "length", you should multiply the physical
length of the tape by the number of tracks (see table below).
-ddensity
Specifies the amount of data a system can write to a tape medium in
bytes per inch. The default "density" is 700 bytes per inch.
The density written to the tape is hardware controlled and can not
be changed. The 6157-001 writes at 10,000 ftpi (flux transactions
per inch) which is approximately equivalent to a density rating of
8,000 bits per inch. The 6157-002 writes at 12,500 ftpi which is
equivalent to a density rating of 10,000 bits per inch.
The -d (density) parameter is used with 0.5 inch tape drives to
specify the density, such as 800, 1600, or 6250 bpi, but doesn't
affect the density, that is, bits per inch, of the 6157.
The -d parameter is used for the 6157 in the calculation of what
quantity of data will be put on the tape. To increase the amount of
data on the tape, the value for -d should be 1000 for 6157-001 or
1200 for 6157-002.
Reference: AIX/RT Commands Reference Volume 1, SC23-2011-1, page 91.
AIX PS/2 Commands Reference, SC23-2025, page 35.
CALCULATION OF TAPE CAPACITY:
The following formula yields the approximate capacity of a tape:
# tracks * length * 11 inches * density = capacity (in bytes).
9 * 300 * 11 * 1000 = 29,700,000 bytes or about 29 MB
18 * 600 * 11 * 1200 = 142,560,000 bytes or about 142 MB
The "11 inches" is the length of the recording foot, the actual
amount of data stored on the tape per foot, and the interblock gaps
take up approximately 1 inch per foot.
TABLE:
For the following AIX command(s), the values for -s and -d are in the
table below:
find ./ -print : backup -iv -C2000 -f/dev/rmt0 -sXXXX -dYYYY
Recommendations for 6157-001:
TAPE CARTRIDGE LENGTH TRACKS -s -d CAPACITY
3M DC 300A 300 feet 9 2700 1000 29 MB
3M DC 300XLP 450 feet 9 4050 1000 44 MB
3M DC 600A 600 feet 9 5400 1000 59 MB
Recommendations for 6157-002:
TAPE CARTRIDGE LENGTH TRACKS -s -d CAPACITY
3M DC 600A 600 feet 15 9000 1200 118 MB
3M DC 600XTD 600 feet 18 10800 1200 142 MB
==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==**==
-------------------------
H.18 - What Non-IBM hard disks can be used in an RT?
[ This section may need to be refined, as AOS hackers may
have introduced other disk interface cards to its support.
Anybody with other NON-IBM drives running in your RT, using
AIX or AOS let me know how you achived this, and what steps are
necessary to make this work. - MW]
The RT uses two different type of drives in the internal
drive bays, ST-506 MFM and ESDI.
There were FOUR different disk controller cards used by
IBM in 6150 and 6151 systems.
- The IBM PC AT FLoppy/Hard disk adapter,
* Will run two floppies, 1.2 Meg or 360 Kb.
* Two ST-506 MFM 40 Meg hard drives.
* Used with the R40 series drives.
* Used in the original IBM PC/AT.
* Normally only found on the earlier RT machines.
It will work on all model RT's.
NOTE: A second controller can be added into slot two if
jumpered as a secondary controller. However, AIX for the
RT will only be able to access one of the two possible
connections on a controller jumpered for secondary
operations, for a total of three drives.
- The ESDI disk controller.
* Will run two floppies, 1.2 Meg or 360 Kb.
* Two ESDI 70 Meg or 114 Meg hard drives.
* Normally only found on the 115 and 125 RT machines.
NOTE: A second controller can be added into slot two if
jumpered as a secondary controller. However, AIX for the
RT will only be able to access one of the two possible
connections on a controller jumpered for secondary
operations, for a total of three drives.
* NOTE2: Both of the above controllers can be run in any
combination for a maximum of two controllers and three drives.
- The Extended ESDI (or EESDI) disk controller.
* Will run two floppies, 1.2 Meg or 360 Kb.
* THREE ESDI 70 Meg, 114 Meg, or 310 Meg hard drives.
* Normally used on later model 125 RT machines and
exclusively on the 135 model machines.
- The Ported Extended ESDI (or EESDI) disk controller.
* Will run two floppies, 1.2 Meg or 360 Kb, but only
when jumpered as a primary controller.
* THREE ESDI 70 Meg, 114 Meg, or 310 Meg hard drives.
* Intended use was for running an additional three ESDI
drives in a 6156 Portable Disk enclosure, with up to
three removable hard drives.
* Can function as the primary controller, but factory
default jumpers place this as a secondary controller.
With this controller, an RT could have SIX ESDI drives.
* Supposedly has a faster transfer rate chip, but it
not documented as such.
NOTE3: On all of the above controllers when jumpered for secondary
operations, the floppy drive function of that controller is
inaccessble by AIX, not sure about AOS.
The ESDI and EESDI adapters in the RT were made for IBM
by Western Digital.
The EESDI adapters are sensitive to timing problems with
some OEM drives.
* The IBM E310 drive was a relabeled MAXTOR XT-4380 drive.
I personally have had success only when a specific TLA number
controller board is installed on the drive, with what MAXTOR
calls 'a short index pulse'.
* Drives known to work with the EESDI controller have the following
ientification numbers:
MAXTOR XT-4380 Series: 2
TLA: 1094508-2 HDA: 1014294 PCBA: 1018528_A
MINISCRIBE: Model 9380E
9380EF
HDA: 01P4 PCBA: 04P1 BDMT: 05P1 Unique: 02P2
TDA: 3077A 3041A
PIRAM: Model # ID337-RT-H2
Barcode says: model #638 AWE 00015432
PCB: 201384 EC: 11665 CCL A
[ Watch this space for more JUMPER details.
Also.. anybody with experiences with OTHER vendor drives running
on an RT with AIX or AOS would be welcome. - MW ]
* The E70 and E114 hard drives use a 150 Ohm inline resistor.
It has pin one as the common pin, and has 12 total leads.
This is NOT documented ANYWHERE that I could find!
-------------------------
H.19 - What is the difference between an R70 and an E70 drive?
Both drives are physically identical 'IBM type 0667' hard drives.
The difference is in the formatting, and coupled with the
Extended ESDI Magnetic Media Adapter. This adapter also employs the
RT PC's burst DMA I/O capability and incorporates a more efficient
alternate-sector scheme than the previous ESDI adapter.
The R70 drive has a 4:1 interleave.
The E70 drive has a 1:1 interleave.
-------------------------
H.20 - What are the characeristics of the various IBM RT disk drives?
Note: All drives have a 512 byte sector size.
Drive part# type Cyl head Sects/track
R40 6299235 MFM ??? ?? 17
(1) R70 61X6942 ESDI 566 7 36
E70 73X3989 ESDI 582 7 36
E114 00F2273 ESDI 914 7 36
E310 08F3358 ESDI 1225 15 34
Note 1: I am not sure why the tech manuals give such radically
different number of available cylinders for the identical
disk drive. I have seen an R70 and E70 side by side, and
they are identical, and are 'IBM type 0667' drives!
[ Are there some other 'R70' drives out there?? -MW ]
-------------------------
H.21 - What SCSI devices can be attached?
The amount and type of support for SCSI devices varies by the
operating system used. Please refer to the different RT operating
system specific FAQ list for more information about SCSI support.
The IBM suported SCSI adapter is a 'Differential Driver/Receiver
option' with the 'Alternative 2 connector'. The SCSI interface
conforms to (then) proposed ANSI standard X3T9.2/82-2 Rev. 17B.
Two wires are used for each signal lead in a push-pull signaling
method also called 'differential-ended'. Most drives for other vendor
workstations and PC's use a 'single-ended' SCSI implementation.
What this boils down to is that the IBM SCSI card is electriclly
incompatible with a lot of the off-the-shelf SCSI drives.
IBM officially supported only one device attached to the SCSI
interface card, the 9332 'Athens' disk drive.
However, all is not lost. :-)
Some vendors do offer their SCSI drives with an optional differential
interface. There also exist a couple of manufacturers of
'Differential-to-single-ended' converter boxes. These boxes allow
a bi-directional conversion of the SCSI bus and will allow attachment
of these single ended disk drives.
See the AIX FAQ for more information about using OEM SCSI disks
on an RT using the IBM SCSI board.
Under the AOS operating system, several people have modified the
system to use an Adaptec SCSI controller. That controller uses
single-ended devices.
[ More information about this Adaptec controller can be found in
the AOS specific FAQ list. - MW ]
-------------------------
H.22 - What do the LED's mean during power on?
When power is first applied initial self tests are performed by
built it ROM routines and special processor on the system planar
board. These self tests should complete with in 1-2 minutes.
ROS LED Values during IPL
00 Initialization of Mono/Printer adapter failed
01 ROS CRC did not compare - Fatal
02 Soft IPL check failed - Fatal
03 Memory error or no memory - Fatal
04 Processor card logic error - Fatal
05 Processor or memory error condition - Fatal
07 IOCC test resident POST - Fatal
08 Bad processor card in IOCC test - Fatal
09 Keyboard adapter resident POST - Fatal
0c initialization failed - Mono/Printer adapter and APC
10 System timer resident POST - Fatal
11 Interrupt controller POST - Fatal
12 DMA arbiter resident POST - Fatal
13 Serial port resident POST
14 Fixed disk resident POST adapter 1 test
15 Fixed disk resident POST adapter 2 test
16 Diskette resident POST adapter 1 test
17 Diskette resident POST adapter 2 test
18 Extension ROS
19 Attemting Manufacturing IPL
1c Advanced Processor card - Fatal
1u Enhanced Advanced Processor and memory Mgmt card - Fatal
20 NVRAM CRC check
21 No boot record found (NVRAM selected devices)
22 No boot record found (ROS selected devices)
23 Disk or diskette adapter slot or address - Fatal
25 User error - invalid RamSpecReg - Fatal
26 Attempting soft IPL
27 Bootable code exceeds available storage - Fatal
28 Unexpected return from loaded code - Fatal
29 IPL process passed control to loaded code.
3c Advanced Processor card and first 128K of memory.
3u Enhanced Advanced Processor and memory Mgmt card.
4c APC logic (Advanced Processor Card).
4u Enhanced Advanced Processor and memory Mgmt card Logic.
5c APC logic and system memory.
5u Memory expansion option or Enhanced Advanecd Processor and
memory managment card.
88 reserved - POR or processor check
89 Unexpected machine or program check - Fatal.
8c IOCC test for APC.
8u Enhanced Advacned processor and memory managment card.
96 Memory card 1 resident POST error condition.
97 Memory card 2 resident POST error condition.
98 Memory card 1 and 2 resident POST error condition.
99 KEY locked, locked response.
-------------------------
H.23 - What does LED code xx mean (during runtime)?
LED codes displayed while running vary greatly depending on the
operating system used. Please refer to the different RT operating
system specific FAQ list for more information about these LED
codes used.
-------------------------
H.24 - What is different about the RT I/O slots.
What cards will run in slot 8.
The IBM RT 6150 and 6151 system units use ISA (AT) style I/O slots,
however slot 5 on the 6151 and slot 8 on the 6150 are unique to the RT.
Most cards that do not use memory refresh, or DMA channel 7 will
have no problem with that slot. Bus timings may be slightly different,
from an AT, as I/O accesses are not driven by the processor directly,
but are routed via a special bus processor called the IOCC.
The 8th slot in the 6150 RT and the 5th slot for the 6150 only
have three signals different from the normal PC/AT assignments.
Pin Standard CO-proc slot usage My notes..
B19 REFRESH + SPK DRV (Wire or'd to speaker control)
D14 DACK 7 - DACK 8 DMA channel is reassigned..
D15 DRQ 7 + DRQ 8 .. ditto
The following cards cannot go in slot 8:
- AT 512Kb Memory expansion card (no refresh signal available).
- Baseband adapter (Ethernet, Ungerman-Bass) [Timing?? -MW]
- SCSI adapter ONLY when it is using DMA channel 7... channel 7 is
not connected to SLOT 8.
These cards require special slot placements:
- EGA adapter only in slot 3 or 6 (6150) or slot 1 (6151).
- Megapel adapter is a two boards sandwiched together, and can
only be installed in slots 4 & 5 in a 6150 tower.
It can also be installed in slots 2 & 3 (prefered), slots 3 & 4,
or slots 4 & 5 (least prefered) in the 6151.
[ It has been noted via discussions in this newsgroup that the
the later X servers will have problems, errors and timing problems
if the megapel adapter is NOT placed in these slots! -MW ]
- AT-Coprocessor in installable ONLY in slot 8 of the 6150 tower,
or in slot 5 of the 6151 desktop.
(That's why it is called the coprocessor slot! :-)
- The PC XT mono/printer adapter, is ONLY supported in slot 3 in
the 6150 tower, or ONLY in slot 1 in the 6151 desktop.
[ I'm not sure why this slot 3 restriction is here, what's
wrong with slot 6? Timing? - MW ]
IBM Mono Adapters with Part numbers 1804065, 1804073 or 1501667
cannot be used according to the parts book that I have seen.
The options book indicates that those part number mono adapters
will not operate correctly with an RT.
I have had reports that clone monochrome cards also may have
problems running in an RT. I have not tried them myself.
Any 8-bit card is better off in slots 3 or 6 (6150) or
in slot 1 (6151), as those slots are 8-bit only anyway.
Save a 16-bit slot for a card that needs it.
-------------------------
H.25 - How do I run diagnostics.
IBM supplied with most RT systems several books, one set of three books
are maroon in color, and contain setup, install and one book labeled
"IBM RT PC Problem Determination Guide" (RT PD). The Problem
Determination guide is usually composed of two manuals in one
binder. IBM manual number SA23-2604, and for those users who
ordered AIX with their systems, it also contains SA23-2603 titled:
"IBM RT AIX Operating System Problem Determination Guide".
This binder also contains three diskettes with maroon labels.
Volume one of the three diskettes is bootable, and when booted,
causes it to examine the system hardware, and place a menu of
diagnostic options on the screen. Most of the diagnostics are menu
driven and are self-explanatory. The RT PD guide will take you thru
any special procedures if necessary.
Further problem diagnosis is available in the dark blue book
with the title "IBM RT PC 6150 System Unit Hardware Maintenance
and Service" Manual# SA23-2605 or Part Number 22F9803.
This book contains problem isolation charts, part numbers,
installation information and a SRN (Service Request Number) to
FRU (Field Replaceable Unit) part index. This book also contains
a LED fault code to SRN reference, as well as probable failure part
analysis charts.
-------------------------
H.26 - Serial port cards maximums and limitations.
* The internal serial ports of the 6150 tower model RT are
normally able to run at a maximum of 19.2K bits per second.
[ AOS users report that this rate is able to be exceeded by
modifications to the standard kernel. - MW]
* The IBM RT 8-Port Adapter is capable of all 8 ports operating
concurrently at 19.2 K bits per second.
* All 8-Port Adapters installed in a single system unit should
be set to the SAME interrupt level for best performance.
* For proper software operation, 4-Port Asynchronous Adapters
must be set to a DIFFERENT interrupt level than 8-Port
Adapters, when installed in the same system unit.
* IBM RT 8-port Adapters in the 6192 Expansion Unit should be
set to DIFFERENT interrupt levels. Interrupt sharing is not
supported between the IBM RT System Unit and the 6192
Expansion Unit.
* A maximum of EIGHT 8-port Adapters can be installed on a system.
(e.g. 6 adapters in the 6192 Expansion Unit and 2 in the RT
system unit)
* Concurrent use of 4-Port Adapters and/or PC AT Serial/Parallel
Adapters and/or 6150 native Serial Ports with the 8-Port
Adapters may result in reduced performance on the devices
attached to the 8-Port adapters, depending upon line speeds
and device usage.
* If a 5080 Peripheral Adapter is installed in the system
unit, the maximum number of 8-Port Adapters is reduced to four
for the 6150, and to two for the 6151 System Units.
-------------------------
H.27 - What are the switches on the 3278/79 adpater?
The 3278/79 emulation adapter short version has one set
of dip switches in the top left corner.
SW Usage
1 Address range 1 1-ON 2-ON
2 Address range 2 1-OFF 2-ON
Address range 3 1-ON 2-OFF
Address range 4 1-OFF 2-OFF
3 OFF=Disable interrupts, ON=Enable interrupts
4 reserved
5 ON for address range 1, OFF for address range 2-4
6 OFF for slots 1-7 on PCXT and all RT slots.
ON for PCXT slot 8.
-------------------------
H.28 - Jumper location and information on AT Fixed disk adapter.
The IBM RT PC Fixed disk adapter is a MFM controller, and is stock
original IBM PC AT controller. The only drive that IBM used for the
RT using that controller was the R40. (standard PC-AT 40 MB drive).
The MFM controller documentation for the RT that I have indicates that
it can support only TWO of EXACTLY the same type of drive. The RT books
indicate that no matter how the drives are arranged, the MFM controller
MUST have both drives the same. The RT docs where quite specific about
that limitation. Most likely a limitation of the drvice driver, not the
hardware.
If running two controllers make sure that one controller is jumpered
for PRIMARY controller and is in slot 1. The secondary controller
is supposed to be in slot 2, and can run a maximum of one hard disk.
The floppy interface is not usable on the second controller.
Secondary addressing is set by placing the jumpers in the position AWAY
from the metal plate on the card.
This arrangement was intended to have 2 R40 drives on the primary MFM
controller and 1 R40 attached to the secondary.
----------------------------------------------------- ---
| :: :: :: :: ||
| o-o . :: :: :: :: ||
| o-o . D C :: :: ||
| S P B A ||
| ||
--------------------------+ +--+ +----+
|_____| |____________| |
Position A is for floppy drive cable.
B = for dasiy chained data cable for both hard drives.
C = for first drive control cable.
D = for second drive control cable.
Jupmers in "S" direction for secondary, "P" for Primary.
I/O addresses used (jumpered primary, slot 1):
Floppy drives A and B - 03F0 - 03F7
Drives C and D - 01F0 - 01F7
I/O addresses used (jumpered secondary, slot 2):
Drives E - 0170 - 0177
DMA channel 2 (diskette only)
IRQ diskette - 6 Fixed disk - 14.
-------------------------
H.29 - Jumper locations and information on ESDI adapter.
The ESDI controller has the same connector arrangement as the MFM
controller and only a SINGLE jumper in about the same position as the
MFM controller. Looking at the card, the jumpers would be with the "S"
direction being for Primary (backwards from the jumpering for the MFM
controller) and the "P" direction for secondary.
This interface board was discontinued with the announcement of the
EESDI controller card.
This controller has a part number of 00F2160.
I/O addresses used (jumpered primary, slot 1):
Floppy drives A and B - 03F0 - 03F7
Drives C and D - 01F0 - 01F7
I/O addresses used (jumpered secondary, slot 2):
Drives E - 0170 - 0177
DMA channel 2 (diskette drives only)
IRQ diskette = 6 Fixed disk = 14.
-------------------------
H.30 - Jumper locations and information on EESDI adapter.
The Extended ESDI controller had two versions: (see below)
----------------------------------------------------- ---
| :: :: :: :: :: ||
| :: :: :: :: :: ||
| E D C :: :: ||
| B A X Y Z || early card
| . o-o ||
--------------------------+ +--+ +----+
|_____| |____________| |
----------------------------------------------------- ---
| :: :: :: :: :: ||
| :: :: :: :: :: ||
| E D C :: :: ||
| Z Y X B A || later card
| o-o . ||
--------------------------+ +--+ +----+
|_____| |____________| |
Position A - is for floppy drive cable both floppies.
Position B - dasiy chained data cable for all three hard drives.
Position C - for first drive control cable.
Position D - for second drive control cable.
Position E - for third drive control cable.
Primary address, jumper Z to Y.
Secondary Address, jumper Y to X.
Later version Part Number, 08F3766.
I/O addresses used:
Floppy drives A and B - 03F0 - 03F7
Drives C, D and E - 01F0 - 01F7 and 05F0 - 05F7
DMA channels Diskette = 2 FIxed disk = 0 or 1 (set by program).
IRQ diskette = 6 Fixed disk = 12 or 14 (set by program).
-------------------------
H.31 - Jumper locations and information on the 'PORTED' EESDI adapter.
The "Ported" or Portable Drive adapter was a special version of the
standard Extended ESDI controller that had the same identical layout,
jumper and pin configuration as the "later" version of the Extended
ESDI controler. The one difference was an external connector on the end
plate of the card that could hook up the IBM "Portable drive bay"
enclosure. The portable controller had the same connectors in the middle,
and I suspect that the "portable" controller was not any different from
the stock controller.
In a non-standard configuration, I have run run 6 ESDI drives by having
a standard Extended ESDI controller in slot one and a PORTED controller
in slot 2. The portable controller even had to be jumpered to the
"secondary" position for installation. I also have tested the card
in the primary position (undocumented on the jumper setting in the manual,
but it looked JUST like the standard EE-ESDI card!) running the internal
E310 drives, and it worked just fine.
Part Number, 08F3612.
I/O addresses used: [looks like secondary addresses to me! - MW]
Drives F, G and H - 0170 - 0177 and 0570 - 0577
DMA channels FIxed disk = 1 or 3 (set by program).
IRQ Fixed disk = 12 or 14 (set by program).
-------------------------
H.32 - IBM 9332 Disk drive information.
IBM 9332 DIRECT ACCESS STORAGE DEVICE
No Longer Available, for ordering by IBM US as of May 17, 1993.
The IBM 9332 "Athens" fixed disk drive has models with both IPI-3
and SCSI interfaces. The only version attached to the RT was via
the differential SCSI interface. During boot time the AIX operating
system has the ability to download microcode to the drive.
The Models 240 and 440 drives are intended to be Rack-mounted
in a 9309 Rack Enclosure. The Models 250 and 450 are mounted
in a standalone enclosure providing cooling and power.
Model................. 240,250 440,450
Capacity in Mb 200.3 400.6
Format
Number of Cylinder 1349 1349
User 1346 1346
Reserved 3 3
Access in Milliseconds
Average 19.5 19.5
Track-to-Track 3.2 3.2
Data Rate--Mb/sec
Maximum burst 4.0 4.0
multisector 1.4-1.9 1.4-1.9
Rotation Speed RPM 3119 3119
Latency in
Milliseconds 9.6 9.6
Number of Actuators 1 2
-------------------------
H.999 - Acknolowgements and copyright information.
This file is provided AS IS with no warranties of any kind as to the
usefullness/correctness of these procedures/questions. The author
shall have no liability with respect to the infringement of copyrights,
trade secrets or any patents by this file or any part thereof. In no
event will the author be liable for any lost revenue or profits or
other special, indirect and consequential damages.
IBM, AIX, AT, XT, RT, RT PC and RT Personal Computer are trademarks of
International Business Machines Inc.
UNIX is a registered trademark of American Telephone & Telegraph in the
United States of America and other countries.
Any other trademarks not specifically mentioned are owned by their respective
companies.
Credits:
The following people have either submitted articles for
inclusion, made suggestions, or had parts of old articles
included within re-arranged information.
If you want your name dropped please let me know.
Jon Brinkmann
John Carr <jfc@athena.mit.edu>
David L. Crow <crow@austin.ibm.com>
Bjorn Engsig <bengsig@dk.oracle.com>
Mike Johnson <mike@neutron.amd.com>
John R. Moore <jrm@lgc.com>
Francois Normant <fn@mathappl.polymtl.ca>
Gerald Oskoboiny <gerald@vnet.IBM.COM>
Richard Rogers <rrogers@chinet.chinet.com>
Matt Rush <mrush@ecst.csuchico.edu>
David Snearline <davids@engin.umich.edu>
John Tracey <jtracey@cse.nd.edu>
====================== end of FAQ ibm-rt-faq/hardware =========================
AIX..... NOT just another UNIX.
Mark Whetzel | My own RT system.. My own thoughts..
DOMAIN: markw@antimatr.hou.tx.us | IBM RT/135 running AIX 2.2.1
UUCP ..!menudo!lobster!antimatr!markw |
Technical Details
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From: faq-rt@antimatr.hou.tx.us (Mark Whetzel)
Newsgroups: comp.sys.ibm.pc.rt,comp.answers,news.answers
Subject: COMP.SYS.IBM.PC.RT: IBM RT - Hardware - Frequently Asked Questions
Summary: This posting contains a list of Frequently Asked Questions
(and their answers) and general information, hints and tips
for using IBM RT 615x computers.
Keywords: IBM RT PC hardware FAQ 6150 6151 6152 AIX VRM AOS MACH PICK
Message-ID: <ibm-rt-hw-930628@antimatr.hou.tx.us>
Date: 28 Jun 93 12:01:00 GMT
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