Datamaster ROMs (was Demography?)

From: Richard A. Cini <rcini_at_email.msn.com>
Date: Tue Mar 3 18:32:01 1998

On Tue, 03 Mar 1998 01:56:54 +0000, David Wollmann <dwollmann_at_ibmhelp.com>
wrote:


>>I bet if I look in storage I still have a couple of parted-out S/23s
>>from which I could lift the ROM you need. Since I'm not much on the
>>electronics side of things (I'm just a poor board-swapper) give me the
>>numbers and a general idea of where it's located in the box and I'll see
>>if I have one. May take me a couple of weeks.

It is the "09" ROS. Here's the diagram that I got from Philip Belben:

** TOP VIEW OF PLANAR SEEN FROM THE REAR **
_______________________________________________
| ====== ====== <-- NOT FOUND ON |
| | 10 | | 11 | <-- SOME EARLY |
| =3=40= =3=60= <-- MACHINES |
| |
| ====== ====== |
| | 19 | | 0D | |
| =7=60= =1=60= |
| *********************** |
| =PATCH= ====== * PHYSICAL LOCATION * |
| | 18 | | 0C | * OF ROS MODULES * |
| =7=40== =1=40= * FOR EACH ERROR CODE * |
| *********************** |
| ====== ====== |
| | 17 | | 0B | -KEY- |
| =6=60= =0=60= ====== |
| | XX | |
| ====== ====== =Y=ZZ= |
| | 16 | | 0A | XX=POD ERROR CODE |
| =6=40= =0=40= Y=ROS PAGE VALUE |
| ZZ=HIGH ORDER BYTE OF |
| ====== ====== FIRST ADDRESS IN |
| | 15 | | 09 | ROS MODULE. |
| =5=60= =0=20= |
| ---(CABLE)-------------- |
| ====== ====== | ====== | |
| | 14 | | 02 | | | 09 | CO-PLANAR | |
| =5=40= =0=00= | =0=20= BOARD. | |
| | (FOUND ON | |
| ====== | ====== SOME EARLY | |
| | 13 | | | 10 | MACHINES.) | |
| =4=60= | =3=40= | |
| | | |
| ====== | ====== | |
| | 12 | | | 11 | | |
| =4=40= | =3=60= | |
| ------------------------ |
-----------------------------------------------


Rich Cini/WUGNET
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Received on Tue Mar 03 1998 - 18:32:01 GMT