Author Topic: Amstrad PPC512/640 ISA Expansion Board by Retro Theory  (Read 389 times)

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Offline genesis8

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Too late and too lazy : https://www.genesis8bit.fr/archives/index.php?news_id=1596
I so badly need one !
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Offline TotO

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Re: Amstrad PPC512/640 ISA Expansion Board by Retro Theory
« Reply #1 on: 12:01, 10 March 21 »
Hehe... Do you own with computer?

Because, it is just an expansion port adapter with some buffers / line drivers.
I'm pretty sure that you will find someone to build one for you for less than 20€.
"You make one mistake in your life and the internet will never let you live it down" (Keith Goodyer)

Offline genesis8

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Re: Amstrad PPC512/640 ISA Expansion Board by Retro Theory
« Reply #2 on: 15:47, 10 March 21 »
Hehe... Do you own with computer?

Because, it is just an expansion port adapter with some buffers / line drivers.
I'm pretty sure that you will find someone to build one for you for less than 20€.
I have a PPC 640 which I use with a parallel ZIP drive.
Before this video, using ISA cards was only a theory, the 2 ports were already on the machine but never used before. Now it's reality.
So, yes I will find someone to build it for me as I am not able to do it. Though I will wait a bit since it's a prototype at the moment, but a working one.
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Offline TotO

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Re: Amstrad PPC512/640 ISA Expansion Board by Retro Theory
« Reply #3 on: 15:59, 10 March 21 »
Sure, it is theory up to someone do it. ;D

The expansion connectors A & B pinouts are known and they are the ISA signals.
https://www.seasip.info/AmstradXT/ppctech/section1.html

If nobody do it in the future from the PPC640 community, I will take a look for you.
"You make one mistake in your life and the internet will never let you live it down" (Keith Goodyer)