🚀 go-pugleaf

In article <3n6ebl$auv@news-s01.ny.us.ibm.net>,
John Scott <jascott@ibm.net> wrote:
>  I tried to access the IBM Warp Page for the file that
>that lists all the motherboards that have pasts there tests but
>it won't let me access for some reason.  Should I stick with the
>VLB motherboard or switch to PCI.  I don't have alot of money so
>I am probably not going to a Pentium just keeping what I have but
>with 72-pin memory, but the new motherboard should have the ability
>to handle the Pentium overdrive chip.

 Asus                  PVI/486SP3*   This motherboard uses the SIS
                                     chipset and takes all the different
486 CPUs.  Like the Pentium chipset, the chipset used here will allow
many different external clock settings, so that DX2-80s and DX-40s are
well-supported.  The board has 3 PCI slots, 3 16-bit ISA slots, and an
ISA/VL slot (I suspect at least two of these are shared, but I'm not
sure which two), and all the on-board integrated I/O (no SCSI, though
the NCR BIOS is built in).  The board will take only 64 MB of RAM (in
two sockets).  The board is reported to work very well under DOS,
Windows (3.1), and Warp.

Setup tips:         None so far.
Possible problems:  None so far.
-- 
Patrick Duffy, duffy@theory.chem.ubc.ca

           I am Fudd of Borg. Wesistance is usewess!

John Scott (jascott@ibm.net) wrote:
: I am buying a new motherboard for the simple reason of uping my
: memory to 16 meg from 8.  My current motherboard only takes 30-pin
: memory and I hear the trend going towards 72-pin memory.  Right
: now I have a 486/dx66 VLB with VLB cirrus video card and VLB Vision
: EIDE controller card.  What motherboards have good records working
: with Warp?  I tried to access the IBM Warp Page for the file that
: that lists all the motherboards that have pasts there tests but
: it won't let me access for some reason.  Should I stick with the
: VLB motherboard or switch to PCI.  I don't have alot of money so
: I am probably not going to a Pentium just keeping what I have but
: with 72-pin memory, but the new motherboard should have the ability
: to handle the Pentium overdrive chip.

You might try a VLB/PCI combination board, but be careful if you do, 
since a lot of these don't have very good PCI bus performance.  I hear 
that both the Asus PVI-486SP3 and the Asus PVI-486AP4 will do the job and 
do the bus thing correctly.  I've seen reports of both being used 
successfully with OS/2.  I think they both have one VLB slot and three or 
four PCI slots, but both also have on-board IDE or EIDE controllers (the 
status of the AP4's controller is uncertain), so you'd be able to use 
your existing video board until you're ready to upgrade.

--
					--Rod Smith
					  RSMITH@PSYCH.COLORADO.EDU

In <3n6m7g$2in@nntp.ucs.ubc.ca>, duffy@theory.chem.ubc.ca (Pat Duffy) writes:
>
> Asus                  PVI/486SP3*   This motherboard uses the SIS
>                                     chipset and takes all the different
>486 CPUs.  Like the Pentium chipset, the chipset used here will allow
>many different external clock settings, so that DX2-80s and DX-40s are
>well-supported.  The board has 3 PCI slots, 3 16-bit ISA slots, and an
>ISA/VL slot (I suspect at least two of these are shared, but I'm not
>sure which two), 

From what I have read, you should avoid motherboards that have both VLB 
and PCI.  Tests have shown them to be slower than either VLB motherboards
or PCI motherboards.  Also, at work we bought a bunch of computers,
and they came with these combination motherboards.  We had several problems
and the manufacturer ended up replacing ALL the motherboards with PCI/ISA 
versions.

-----------------------------------------
--  Kevin Krieser
--  Using OS/2 Warp
--  New Address:  kkrieser@ionet.net

kkrieser@ionet.net wrote:
: From what I have read, you should avoid motherboards that have both VLB 
: and PCI.  Tests have shown them to be slower than either VLB motherboards
: or PCI motherboards.  Also, at work we bought a bunch of computers,
: and they came with these combination motherboards.  We had several problems
: and the manufacturer ended up replacing ALL the motherboards with PCI/ISA 
: versions.

Although frequently true, this is an overgeneralization.  The problem, as 
I understand it, lies in the dual-bus implementation of some early 
dual-bus boards, which set it up so that the VL bus "talked" directly to 
the CPU, as VLB is supposed to do, but the PCI bus was set up as a 
"bridge" off of the VL bus, which slowed down PCI bus performance 
something awful.  The design used on Asus' dual-bus boards, OTOH, sets up 
the PCI bus to "talk" to the CPU the way it's supposed to, and then sets 
up the VLB as a bridge from the PCI bus.  Apparently this results in less 
of a hit on the VLB than the first design does for the PCI bus, and the 
overall performance is much better.

OTOH, there's been some discussion lately in the Asus newsgroups about 
poor PCI bus performance with the PVI-SP3 when the VL bus slot is in use, 
so maybe this particular Asus board doesn't do it right.  :-(  In that 
case, the Asus PVI-AP4 would still be the only choice of which I know in 
the dual-bus (VLB/PCI) category.

--
					--Rod Smith
					  RSMITH@PSYCH.COLORADO.EDU

Anyone know anything about the CH-890A mother board?

thanks

Roderick Smith (rsmith@psych.colorado.edu) wrote:
: kkrieser@ionet.net wrote:
: : From what I have read, you should avoid motherboards that have both VLB 
: : and PCI.  Tests have shown them to be slower than either VLB motherboards
: : or PCI motherboards.  Also, at work we bought a bunch of computers,
: : and they came with these combination motherboards.  We had several problems
: : and the manufacturer ended up replacing ALL the motherboards with PCI/ISA 
: : versions.

: Although frequently true, this is an overgeneralization.  The problem, as 
: I understand it, lies in the dual-bus implementation of some early 
: dual-bus boards, which set it up so that the VL bus "talked" directly to 
: the CPU, as VLB is supposed to do, but the PCI bus was set up as a 
: "bridge" off of the VL bus, which slowed down PCI bus performance 
: something awful.  The design used on Asus' dual-bus boards, OTOH, sets up 
: the PCI bus to "talk" to the CPU the way it's supposed to, and then sets 
: up the VLB as a bridge from the PCI bus.  Apparently this results in less 
: of a hit on the VLB than the first design does for the PCI bus, and the 
: overall performance is much better.

: OTOH, there's been some discussion lately in the Asus newsgroups about 
: poor PCI bus performance with the PVI-SP3 when the VL bus slot is in use, 
: so maybe this particular Asus board doesn't do it right.  :-(  In that 
: case, the Asus PVI-AP4 would still be the only choice of which I know in 
: the dual-bus (VLB/PCI) category.

: --
: 					--Rod Smith
: 					  RSMITH@PSYCH.COLORADO.EDU


You certainly can be sure of the Asus PVI-AP4, because that's what I use 
on my Warp PC.  Works fine, great, actually.  Gets my full recommendation.


Chris
crobato@kuentos.guam.net