Anyone have a IBM Model 25-286 Riser card? - test-drb@ccmp.vtda.org

13 May 2013

The 8086 versions of the Model 25 and Model 30 have 8-bit ISA risers, the
25 with a two-slot riser and the 30 with a three-slot riser.

The 80286 versions of each have 16-bit ISA risers, again the Model 25 with
two slots and the Model 30 with three.

I tried plugging the 8-bit riser into the Model 30 286 board, but the
system refused to power up. In addition, the Model 30 riser is incorrectly
spaced to fit in the Model 25 all-in-one case. Even if I cut the top slot
off, the remaining two don't line up at all. It looks like I need the
genuine part, which no one seems to have anywhere.

Date: Sun, 12 May 2013 17:44:34 +0100
...
  From: Liam Proven <lproven at gmail.com>
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 Subject: Re: Anyone have a IBM Model 25-286 Riser card?
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 On 10 May 2013 22:37, Terry Stewart <terry at webweavers.co.nz> wrote:
  Besides,
the 16-bit PS/2s are 16-bit MCA, not 16-bit ISA. 
 Peace...  Sridhar 
 Not all of them.  My IBM PS/2 30-286 is is ISA-based. 
 That's sort of what we're debating here. Are the ISA-based PS/2s 8-bit
 or 16-bit? IOW short or longer, 2-part ISA slots?

 You could resolve the question - which does yours have?

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