Path: utzoo!mnetor!uunet!husc6!cmcl2!rutgers!rochester!cornell!uw-beaver!tektronix!reed!percival!bucket!leonard
From: leonard@bucket.UUCP (Leonard Erickson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: PC diagnostic numbers and/or hardware help
Message-ID: <643@bucket.UUCP>
Date: 27 Dec 87 07:40:40 GMT
References: <579@silver.bacs.indiana.edu>
Reply-To: leonard@bucket.UUCP (Leonard Erickson)
Distribution: na
Organization: Rick's Home Grown Unix; Portland, OR
Lines: 34
Keywords: XT clone, Seagate 20Mb

From my copy of the PC/XT Advanced Diagnostics disk:

 1xx	System board
 2xx	memory
 3xx	keyboard
 4xx	Monochrome & Printer adapter
 5xx	Colr/Graphics Monitor adapter
 6xx	diskette drive(s) and adapter
 7xx	math coprocessor
 8xx	??????
 9xx	printer adapter
10xx	??????
11xx	Async communications adapter
12xx	Alt Async communications adapter
13xx	Game control adapter
14xx	Matrix printer
15xx	SDLC communications adapter
16xx	??????
17xx	fixed disk drive(s) and adapter
18xx	expansion option (expansion chassis)
19xx	???????
20xx	BSC adapter
21xx	Alt BSC adapter

So it would appear that the diagnostics don't like your CGA card. If you have
a Hercules card this will often be identified as a CGA card by the daignostics!

Also you can get 1801 errors by having cards in slot 8 that aren't properly
setup for it.
-- 
Leonard Erickson		...!tektronix!reed!percival!bucket!leonard
CIS: [70465,203]
"I used to be a hacker. Now I'm a 'microcomputer specialist'.
You know... I'd rather be a hacker."