Recent content by DosFox

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  1. DosFox

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    I'd still sanity check it before replacing anything else!
  2. DosFox

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    The 341S0788 is compatible with the Colour Classic, which I believe the Mac TV is based on. It's the CUDA that's in my colour classic after all! The low standby voltage may be down to U28, so it's worth seeing about replacing it. However I would first double check with an oscilloscope to see...
  3. DosFox

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Truth be told I don't know how it works - it isn't my tool at the end of the day! Regardless, I will say it works very well - and it has been able to dump the CUDA lite from a 4400, which as MMU Man mentioned in his excellent excel sheet, is an E5 rather than an E1 - so it can access the...
  4. DosFox

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Wait did you? I completely missed that! Truth be told I didn't go through this thread until I was asked to add my work on the Raven Proframmer!
  5. DosFox

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Hey how was I supposed to ask if I didn't know it existed! I'm okay with the idea of flashing an EEPROM whenever I need to flash a new EGRET or CUDA, I'm only ever likely to need to flash a new 68hc705e1 once in a blue moon - so flashing the AT28C64 with a Ti866 and then installing it into...
  6. DosFox

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Hah thanks for catching the typo
  7. DosFox

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    What is the other variant? I'm only aware of the EGRET/CUDA (68HC705e1) and the CUDA Lite (68HC705e5). I'm more than happy to build two other programmers!
  8. DosFox

    Recreating the Mac's CUDA / EGRET microcontroller chips - can it be done?

    Hey all! I was poked by @Kai Robinson and @bakkus to do a bit more of a write up/explanation of what the hell I managed to do! [Wow I rambled for a bit] Bottom line is - we are able to make new CUDAs and EGRETs using 68HC705e1s. I'm lead to believe in the vast majority of the cases the CUDA...
  9. DosFox

    Reproducing the Lisa 2 Card Stack: The CPU Card

    That is amazing to hear, now the race is on to see who will be the first person to make a completely brand new Lisa in almost 40 years!
  10. DosFox

    Reproducing the Lisa 2 Card Stack: The CPU Card

    That is amazing news!! Really hoping that error logic issue is something simple - at least it's not getting in the way of booting LOS. Now all that's left is to test the ram card and you've got a complete stack Lisa stack!
  11. DosFox

    Reproducing the Lisa 2 Card Stack: The CPU Card

    Did you ever get the chance to patch and retest your CPU card?
  12. DosFox

    Reproducing the Lisa 2 Card Stack: The CPU Card

    Oh god! Easy mistake to make I guess? Also relatively easy to repair hopefully 😬😬
  13. DosFox

    Reproducing the Lisa 2 Card Stack: The CPU Card

    Ah I just checked my ROM archive, the only Sun SCSI ROM I have is 341-8007, which I'm guessing isn't the quick boot ROM!
  14. DosFox

    Reproducing the Lisa 2 Card Stack: The CPU Card

    Unfortunately as far as I can tell the Lisa clock doesn't divide down at all :/ you need a custom clock for it.
  15. DosFox

    Reproducing the Lisa 2 Card Stack: The CPU Card

    Heh I would worry too much about the schematics and designs being a mess - so long as they're functional it doesn't matter! You can always clean them up later. The COP would be neat to reverse engineer, but I think there are enough ROMless version of the COP (and the soviet clones!) It's not a...