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Article View: comp.sys.ibm.pc.rt
Article #735

Re: RT hardware help

#735
From: Mark Whetzel
Date: Fri, 11 Sep 1992 23:39
71 lines
3120 bytes
In article <1992Sep7.124134.21598@cs.hw.ac.uk>,
   censjg@caledonias3.caledonia.hw.ac.uk (Simon Greaves) writes (in part):
> However, there is *NO* keyboard, *NO* mouse, *NO* cables & *NO* documentation.
> 
> I can get hold of an old IBM PC keyboard, but it has a 9 pin DIN plug
> connector rather than the RT type, are the keyboards compatible if I
> change the plug?
> Does anyone have the pinouts for the mouse, kbd & serial ports?

> In summary:
> 	2) Can I use a standard PC keyboard, and if so how do I convert from 5
>           pin DIN to RT 6 pin square? Can I convert Logitech mouse
>           (Logimouse P7) with 9 pin D type to RT 6 way?

Here is the pinout on the Keyboard,  Don't know if the scancodes are
anywhere near the same, but this came from the IBM Tech Ref Vol I, page 9-23

   -------------
   |           |       pin 1 =  + 5 Volts
   |   5 3 1   |       pin 2 =  Data
   --        --        pin 3 =  Speaker
     | 6 4 2 |         pin 4 =  Speaker
     |       |         pin 5 =  Ground
     ---------         pin 6 =  Clock


The book has a big chart of scan codes and key function output codes,
larger that I want to post and type, but I am not sure how they compare to
a PC keyboard, if at all.

Locator  (mouse or tablet)

   -------------
   |           |       pin 1 =  Ground
   |   5 3 1   |       pin 2 =  Transmit
   --        --        pin 3 =  + 12 Vdc
     | 6 4 2 |         pin 4 =  - 12 Vdc
     |       |         pin 5 =  + 5  Vdc
     ---------         pin 6 =  Receive

Programmable in 25,50, 100, 200 counts per inch  default = 100
Protocol RS232C 9600 Baud async Fullduplex stopbit = 1, odd parity

at reset sends a special 4 byte report sequence 0xFF080000

Stream mode, has a loopback mode,  report function stream is:
  Byte 1  always = 0x0B
  Byte 2  bit 0    1 = right button pressed
          bit 1    always 0
          bit 2    1 = left button pressed
          bit 3,4  always = 00
          bit 5   X data sign  1 = negative
          bit 6   Y data sign  1 = negative
          bit 7    always 0
  Byte 3  bits 0-6  X data   bit 6=LSB
	  bit 7    always 0
  Byte 4  bits 0-6  Y data   bit 6=LSB
	  bit 7    always 0

How this fits a PC mouse I don't know, but every bit of info can 
help when putting things back together.

This info came from an IBM BOOK SA23-2610-0 IBM RT PC Hardware Tech. Ref.

Cheers.. and good luck
markw
-- 
Mark Whetzel     My comments are my own, not my company's.
Western Geophysical - A division of Western Atlas International,
A Litton/Dresser Company           DOMAIN addr: markw@airgun.wg.waii.com
VOICE: (713) 963-2544		   UUNET address:  uunet!airgun!markw
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Message-ID: <1468@airgun.wg.waii.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!airgun!markw
References: <1992Sep7.124134.21598@cs.hw.ac.uk>

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Path: arc1-ca.pugleaf.net!sparky!uunet!airgun!markw
From: markw@airgun.wg.waii.com (Mark Whetzel)
Newsgroups: comp.sys.ibm.pc.rt
Subject: Re: RT hardware help
Summary: pinout for keyboard and mouse on IBM RT
Message-ID: <1468@airgun.wg.waii.com>
Date: 11 Sep 92 23:39:10 GMT
References: <1992Sep7.124134.21598@cs.hw.ac.uk>
Organization: Western Geophysical, Div. of Western Atlas Int'l, Houston, TX
Lines: 71