CA300779-001 REV 5.1

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Steve
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CA300779-001 REV 5.1

Post by Steve » Thu Oct 14, 2021 2:17 pm

I am interested in this board's rear patch wire going from one of the SIL's below the CPU to the GLUE, or is that SDMA?. Reason being that there are other versions of this board with the same revision number without the patch, like @Icky's here.

Does that mean all 5.1 boards *should* have this patch done?

c. motherboard front.jpg
c. motherboard front.jpg (585.85 KiB) Viewed 141 times
a. motherboard rear.jpg
a. motherboard rear.jpg (563.34 KiB) Viewed 141 times
b. motherboard rear patch.jpg
b. motherboard rear patch.jpg (537.13 KiB) Viewed 141 times

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exxos
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Re: CA300779-001 REV 5.1

Post by exxos » Thu Oct 14, 2021 2:19 pm

I did look into this, cannot remember If I posted it anywhere specifically, but I think it was one of the data lines on the shifter which had the extra pull-up on it..

Presumably there was a little bit too much noise on that particular line so they added more pull-up on it to solve it..

Why does all this sound familiar...
https://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxoshost.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
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