exxos's Atari, Amiga & retro forum

Hey guys,

Just wondering about this, diagrom says memory test OK but yaart refuses to run and the desktop is corrupt:

Most likely: CAS1H and CAS1L swapped.

What are all the bodge wires for ?

@czietz - thanks m8, you were right :)

- Seems I followed the instructions correctly, but I think @agranlund might have either the MMU pinout wrong or his silkscreen wrong:
I did have CAS1L to 21 and CAS1H to 22 as described.

@exxos No bodge wires, I just routed the wires underneath the resistor legs to keep them neat.

Steve wrote: 15 Jun 2021 11:28 Just wondering about this, diagrom says memory test OK but yaart refuses to run and the desktop is corrupt:

FYI, the Atari Diagnostic Software and DiagROM are two different things.

@derkom thx ;0

Steve wrote: 15 Jun 2021 12:23 - Seems I followed the instructions correctly, but I think @agranlund might have either the MMU pinout wrong or his silkscreen wrong:

Code: Select all

https://github.com/agranlund/STRam
MMU pins:
RAS1  = 18
CAS1L = 21
CAS1H = 22
MAD9  = 64

I did have CAS1L to 21 and CAS1H to 22 as described.

@exxos yes then the silkscreen on the 4mbstram board must be incorrect

Steve wrote: 15 Jun 2021 13:16 @exxos yes then the silkscreen on the 4mbstram board must be incorrect

Yes that is the case.

PhilC wrote: 15 Jun 2021 16:16 Yes that is the case.

It looks right to me tho :shrug: