exxos's Atari, Amiga & retro forum

ahhhh we might have a suspect...



What its looking like is I wired RW from the CPU to the RAM, when it should have been WE from the MMU (which isn't connected to anything)

exxos wrote: 25 Sep 2018 14:01 ahhhh we might have a suspect...

What its looking like is I wired RW from the CPU to the RAM, when it should have been WE from the MMU (which isn't connected to anything)

Lets hope this is the one.

I'll give it a try tonight.

Icky wrote: 25 Sep 2018 15:57 Lets hope this is the one.

Would certainly explain the RAM corruption...

I really hope this kicks things into gear, not sure my sanity can take another day looking at the schematics. :crazy: :crazy: :crazy: :pullhair: :pullhair:

Well done.

At least you are able to find it. I've got no hope with this number dyslexia (fact)

Took ages just to test the data and address lines etc.

And I danced, prayed and all other rituals to make the stars align and they did.....

Well done Exxos for spotting this one.

Icky wrote: 25 Sep 2018 20:42 And I danced, prayed and all other rituals to make the stars align and they did.....
Well done Exxos for spotting this one.

:bravo:

exxos wrote: 25 Sep 2018 20:55 :bravo:

So it’s running but keyboard, mouse, sound & floppy not working.

Serial is working though.

Icky wrote: 25 Sep 2018 20:57 So it’s running but keyboard, mouse, sound & floppy not working.

Serial is working though.

Does the atari cart give any clues ? you should be able to control that via serial..

If the keyboard is unplugged, do you get the constant clicking sounds ?

I've found a typo in the MFP circuit... Will post shortly...

exxos wrote: 25 Sep 2018 21:03 I've found a typo in the MFP circuit... Will post shortly...

Well that fix made my floppy drive start working - need to check it out with some tests.

Desktop now shows Drives and Trash.

Still no a sound or keyboard

EDIT: Image