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Recent content by GeekDot

  1. GeekDot

    Building an internal grayscale card for the SE/30

    It's making progress. DeclROM assembles in MPW without errors... which does not necessarily mean it's working 😤 While I feel like a walking-talking index of "Designing Cards and Drivers..." (Chapter 8) and am close to be able to read sRessource entries directly from a binary dump, there's still...
  2. GeekDot

    Building an internal grayscale card for the SE/30

    The Micron uses an ASIC ("Maveric") which is in unobtanium. The Formac uses (vintage) standard parts. Easy decision IMHO...
  3. GeekDot

    Building an internal grayscale card for the SE/30

    Just to add my 2 cents here: After I've disassembled and completely commented the original DeclROM we have 2 different approaches: Patch the hell out of it Rewrite our own While patching the binary gives you immediate results (good and bad ones) it's tedious, error prune and gives you just...
  4. GeekDot

    Macintosh SE/30 logicboard recreation (thread revival)

    Mhh, never saw that dialog at JLC.... and I ordered many, many multi-layer boards. While you're living in het mooie Nederland, I can offer you to sell/send you a purple, unpopulated board as soon mine arrived (if you're fine doing the populating yourself).
  5. GeekDot

    Macintosh SE/30 logicboard recreation (thread revival)

    The order of the layers is automatically defined by the gerber files - so it seems that something went wrong during your order process (create a zip file from the "board files" folder and upload that). But as long as the top- and bottom-layers are on the outside, everything else belongs into the...
  6. GeekDot

    Macintosh SE/30 logicboard recreation (thread revival)

    Oh dang, you're right... need to resume that. I dived way too deep into the Apple IIgs universe. So I need to populate my (rev.1) soon to have an "in vivo" test-bench instead those dreaded 'try now' sessions ;) Also I noticed that the orientation of the diodes D4-D19 is wrong in the provided...
  7. GeekDot

    Radius Rocket disabled MMU... anyone knows why?

    Hey gang, After many moons of waiting on my todo-stack, I finally repaired my Radius Rocket. Runs fine and all... ..but there's one strange thing I came about when doing nastier things than running MacBench: It claims not having an MMU (while the installed 68040/25 certainly has one) -...
  8. GeekDot

    Two SE 1/20 do not accept floppies

    Hey Gang, so here's a IMHO tough nut to crack... Just got two SE 1/20. Cleaned them etc. and both boot fine off their screaming original 20MB HDDs. What puzzles me is that both(!) refrain to accept every floppy-disk being fed to them... either instantly ejecting or offering to format them...
  9. GeekDot

    Quadra 950 PSU died... <cry>

    Hey gang, I could cry like a baby... Restaurated my Q950, cleaned it, gave it a nice retrobright sunbath, tidied-up the A/UX installation and being annoyed by the loud fan, I went for the final step replacing it with something more silent and while at it, I gave the PSU a good blow of fresh air...
  10. GeekDot

    SCSI2SD + Hard-Reset = No booting

    Hi all! This drives me crazy...  I have a SCSI2SD (recent firmware) in my IIci, Sys 7.5.3, all parameters set in "safety mode" (ie. SEAGATE vendor etc.) but formatted and setup with LIDO anyhow and everything's fine and shine... ...until I have to hard-reset the machine - which I have do a lot...
  11. GeekDot

    Lowmem Boot Globals Doc anyone?

    Hey Gang, While diging, biting and crawling through the Carrera040 disassembly I got to the point where I need to know more about the "Boot Globals" risiding in lowmem's system global variables. BootGlobPtr lives at $DDC, that's for sure, and it points to different locations on different...
  12. GeekDot

    Hint for fixing PB140 screen issue?

    Hello you wonderful bunch of Mac'ians! While my my "other Mac project" is currently on-hold I dived into a PB140 restoration... initially it went quite smooth -thanks to the great videos of Ferrix97 (Grazie mille, mio eroe!)- replaced the fuse, reanimated hard-drive and recapped the...