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Article #4302

PS/2 CMOS format

#4302
From: David Wright
Date: Mon, 21 Jan 1991 01:38
29 lines
1880 bytes
I have run INFOPLUS 1.40 on a friend's PS/2 model 70.  I found many
abnormalities on the CMOS page, including a checksum error and no
hard disk indicated.  At first, I suspected that someone may have
tampered with the machine, but now I am wondering if the format for
the CMOS that INFOPLUS appears to be using (correct for AT) is 
correct for PS/2.  Could someone tell me the format of the PS/2
(Model 70) CMOS is (if it indeed differs from AT)?

BTW, I have run the automatic setup from the configuration disk,
which looks correct for the machine.

For additional info, here is the dump of the CMOS contents:

     00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
   -------------------------------------------------
00 | 08 00 48 00 14 00 07 20 01 91 26 02 50 80 00 00
10 | 44 00 00 00 43 80 02 00 11 ff ff ff ff ff ff ff
20 | ff 01 00 00 00 01 00 00 00 01 00 00 00 54 28 00
30 | 00 9f f0 e6 10 00 11 19 00 00 00 00 00 00 00 00

The machine is a PS/2 model 70 with 5M memory, 60M ESDI harddisk, 
two 3.5 1.44M floppies, and 1 parallel, 1 serial, and 1 mouse port.
While most of the configuration is correct (according to AT format),
byte 12h is incorrect (harddrive = 00h, none installed) and bytes 
after 09h are inconsistent with the AT format.

Thank you for any info or assistance you can provide!
-David Wright
wright@cs.uiuc.edu
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From: wright@cs.uiuc.edu (David Wright)
Newsgroups: comp.os.msdos.programmer
Subject: PS/2 CMOS format
Summary: Is PS/2 different than AT
Message-ID: <1991Jan21.013821.31471@cs.uiuc.edu>
Date: 21 Jan 91 01:38:21 GMT
Sender: news@cs.uiuc.edu (News Database (admin-Mike Schwager))
Distribution: usa
Organization: University of Illinois, Dept. of Comp. Sci., Urbana, IL
Lines: 29