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  1. J

    MacEffects Clear SE & SE/30 Cases Now Available!

    How big was the first run?
  2. J

    Check if Centris 650 has a fpu or not

    So, I found the issue. It's more of a "feature" than actual bug. I had added support for large (128MB) simms by doing: The change to the RAM sizing code is: A0168 223C 0000 0100 Move.L #$100, D1 Changing that to: A0168 223C 0000 0000 Move.L #0, D1 As per Rob...
  3. J

    Check if Centris 650 has a fpu or not

    Can you also take a picture of the ROM in the machine with the power on? There are a few LED that give a lot of information.
  4. J

    Check if Centris 650 has a fpu or not

    Does it chime with the hacked ROM? Are you getting picture? I've been running this ROM in my Q650 for a long time, but not sure if the Centris has like a different gestalt ID or so.
  5. J

    #Marchintosh 2025 - RGB 900

    Thank you 😌! The only things so far is raising the clock speed to 33Mhz, PDS FPGA, 256MB RAM and that 16MB ROM, the Q900 can do around 37Mhz maximum, but I’m missing a crystal for that. Also not sure my FPGA will like that, but only one way to find out. I know the FPGA breaks up when you...
  6. J

    #Marchintosh 2025 - RGB 900

    These are the stock ratings. Most PSUs today have a weaker 3.3V and 5V (around 20A) and a very strong 12V. Typically the -12V is 0.3A
  7. J

    #Marchintosh 2025 - RGB 900

    Thank you :), yeah, I’m running the fans at 40% min and they are very quiet. This case is basically open in the lower part (just a mesh), so makes sense to have speaker that way (also a mesh underneath it) :) power supply is also in the lower section and 550V, it’s a bit low on -12V and 5V...
  8. J

    #Marchintosh 2025 - RGB 900

    Here is a short description of my own project for #Marchintosh 2025 that is nearing completion. An RGB 900 :) . But first a short background, I have several Quadra 900 logic boards that I have been thinking about what to do with(besides the obvious – playing with them on my bench). Since long...
  9. J

    Mystic Died. Looking for an MC88916DW80 chip.

    Do you have a SCSI2SD v6? I’ve found that it emulates a mechanical drive better than the BlueScsi. As you know I have issues with rom disk driver and mechanical drives, but it works with BlueScsi (and Zuluscsi, but they use same principle and hardware). I guess the mechanical drives and scsi2sd...
  10. J

    Quadra PDS connector source?

    I can confirm that the connector from Quest Comp works fine and that the company does deliver :).
  11. J

    Apple Interactive Television Box (STB) Prototype Adventures

    Someone at Apple is definitely reading :). The schematics for the stb was released yesterday: https://68kmla.org/bb/index.php?threads/apple-interactive-tv-box.716/page-4#post-501810
  12. J

    Apple Interactive Television Box (STB) Prototype Adventures

    I've played a bit more with the unit here. Since it's essentially an LC475 with added video circutry I've experimented with a patched LC475 8MB ROM with added ROM disk driver and OS (my LC475 patched ROM has both ROM and RAM disk driver). It will boot, but not display video (and I know others...
  13. J

    Apple Interactive Television Box (STB) Prototype Adventures

    Here is the system extracted from the ROM, I believe it's slightly different than previous red ROM, this one contains "swedish keyboard" for instance.
  14. J

    Apple Interactive Television Box (STB) Prototype Adventures

    I also have a "telia unit" here that I got only a few days ago, it belongs to my dear friend @jajan547 who lets me play with it for while before sending to him :). The RAM test is at least located at A191C, 7000 72FF 2448 If you change that to 4ED6 72FF 2448 it will no longer test the ram (if...
  15. J

    Special RED Macintosh Plus Apple Events Developer Association

    Another amazing find :)! Great job Jake!!
  16. J

    PRAM replacement on later Powerbook G4?

    On the G3 Lombard it’s a similar solution, but with 6 in series. Bad thing is that you have to take the whole computer apart…
  17. J

    Mac OS 7.7a2 (Pre-release) archived on the garden

    Did anyone get it to work on a 68k machine? I tried both on IIci with Carrera040 and LC475 but without success. It starts to boot but crashes into a prompt.
  18. J

    Anyone Else Have an Apple C.A.T. (TechStep Precurosr)?

    I examined the cards quite extensively when I had the set here, and the little card is basically just a few connectors on a simple two layer card, the cables are fairly standard or at least with still available connectors. The Nubus card is a bit trickier of course, but it’s basically just a lot...
  19. J

    Will the dos card for 6100 work in IIci?

    Hi! I recently bought a battery bombed 6100 that came with a dos card and the y-cable. The dos card was actually in really good shape and I have only replaced the thermal paste on the CPU. Now to my question, will this card also work in my IIci? Ive read online that is supposed to work in the...
  20. J

    nubus who dis?

    Really cool!! Was that the only dos card made for the IIci? I recently got a (battery bombed…) 6100 that came with dos card that I’m currently restoring. Needs a new board, but otherwise I should get it running again. I assume that dos card cannot be used In the IIci?