RetroBBS - comp.sys.ibm.ps2.hardware - interesting custome ps/2 9535

interesting custome ps/2 9535

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From: apat4free@gmail.com (Alexandros)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: interesting custome ps/2 9535
Date: Sun, 24 Dec 2023 09:26:41 -0000 (UTC)
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by: Alexandros - Sun, 24 Dec 2023 09:26 UTC

9535 is ISA Re: interesting custom ps/2 9535

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From: ohland@charter.net (Louis Ohland)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: 9535 is ISA Re: interesting custom ps/2 9535
Date: Sun, 24 Dec 2023 08:40:56 -0600
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by: Louis Ohland - Sun, 24 Dec 2023 14:40 UTC

It isn't a 56 system board. It is the same system board used in the 9533
with a three slot ISA riser. Note all of the slots on the riser are
black. First hint.

The 9533 uses a MCA socket to connect a riser to. The 9533 is an ISA
bus. What could have been, ISA bus with SCSI... But... perhaps IBM came
to the conclusion that IDE was a better "fit" for the ISA bus than SCSI.
SCSI is more useful to systems that perform better with multi-tasking
and multiple devices.

ISA and two devices, a HDD and a CD, you pretty much maxxed out the
controller.

https://www.ardent-tool.com/9533/#9533Planar

See the 4MB of memory soldered onto the system board?

The op is correct that the 9535 and 9540 are not covered with an
announcement letter...

Alexandros wrote:
> https://youtu.be/cSqWeNdeahM?si=biVnvcWpD8lqJgEh
>
> A video of a custom 56 on 35 planner (?)
>

Simplicity does not precede complexity, but follows it.

computers / comp.sys.ibm.ps2.hardware / interesting custome ps/2 9535

Subject	Author
interesting custome ps/2 9535	Alexandros
9535 is ISA Re: interesting custom ps/2 9535	Louis Ohland