Help: IBM 5170

From: Marty <Marty_at_itgonline.com>
Date: Mon Sep 21 08:37:32 1998

 
 I believe you can download the 80286 (AT) setup program from IBM's web
 site. Last year I downloaded the POS setup diskette for the PS/2 60.
 
 Marty
 


______________________________ Reply Separator
_________________________________
Subject: Re: Help: IBM 5170
Author: classiccmp_at_u.washington.edu at internet
Date: 9/19/98 8:13 PM


>
> Recently I bought 2 IBM 5170's (PC/AT) for 6 bucks. I bought these
> machines to add to my collection. Both of them say this when I boot up:
> "162 - System Options Not Set - (Run SETUP)"
 
 That normally means that something has changed since the CMOS RAM was
 configured.
 
> Both of them have a 512k System board. One only shows 256K of memory
> during memory test and the other one shows 512K but has a parity error.
 
 Which version of the system board do you have? The older one has 36 RAM
 chips, each one being a 128K*1 device (actually made from 2 DIPs soldered
 together). The later one has 18 256K*1 bit devices on it. I have
 schematics, etc for both boards.
 
 The partiy error sounds like a RAM chip failing. Try reseating them, and
 if it's the later version, try replacing the RAMs one at a time with
 known-good ones. 256K*1 DRAMs are pretty easy to get, and the ones on the
 system board are socketed.
 
> Is there any dip switches on the motherboard, and is SETUP a software
 
 There are 2 switch-things on the system board (unless you count the
 little 8-pin DIP postion behind the expansion slots that can be used to
 fiddle with the ROM addressing).
 
 One is a slide switch next to the power connector. In one position the
 board is set up for an MDA display. The other way for a CGA one. I can't
 remember which is which, but if you get it wrong, all that happens is
 that it fails the POST and beeps. Flip the switch and try again.
 
 The other is a jumper (J18) to the left of the speaker connector at the
 front). This selects between 256K and 512K for RAM on the system board.
 Check this is set the same way on both your boards.
 
> program?
 
 Yes, SETUP is the program used to load the parameters into the CMOS RAM.
 Unlike most modern PCs, this is not in ROM, but has to be loaded from
 disk. There's a free clone (with source, I think) on Simtel somewhere. If
 the parameters have got scrambled, then about the only thing it can boot
 from is a 5.25" drive as A:
 
 -tony
 
 
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 From: ard_at_p850ug1.demon.co.uk (Tony Duell)
 To: "Discussion re-collecting of classic computers"
 <classiccmp_at_u.washington.edu>
 Subject: Re: Help: IBM 5170
 In-Reply-To: <36043755.4B34_at_bright.net> from "oajones" at Sep 19, 98 06:59:33
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