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About Bolle

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    Germany - Bavaria

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  1. Bolle

    SE/30 PDS Adapter Epic Blunder

    heh, you’re right. Shouldn’t answer any threads before the first morning coffee. Making a fast enough replacement for the comparators isn’t too hard if you have enough I/O on whatever CPLD you are using.
  2. Bolle

    SE/30 PDS Adapter Epic Blunder

    That will take some more time I guess. There are still three GALs on the ASIC Turbo that need examination too before such a thing could happen. 32K*32 would be a waste if we want to stick to the original 128K of cache. Mouser still stocks 32K*8 so the SRAM would not be a real issue... The Tag-SRAM however would be. I have got a roll of AT7174 but not sure where to go when that’s empty. Working on 030 accelerators right now that will need those. At first we‘re going to see if the chips are legit and working at all and get @JDW‘s Turbo fixed if they are.
  3. Bolle

    Would this SCSI2SD work with a Macintosh SE/30?

    This interfaces an SD card to IDE. You don't want IDE but SCSI.
  4. Bolle

    Upgraded my on 11'' lcd screen

    Wow, this looks nice. I have a stack of 12" parts, looks like I will have to keep an eye out for one of those panels. How is the screen brightness compared to the original? Way better I guess, most of my 12" screens have gotten pretty dim over the years.
  5. Bolle

    SE/30 PDS Adapter Epic Blunder

    You sir are a hero. Did they dispose them to you, or actually charged you something?
  6. It shouldn't be on a IIfx board. The first revision of the Mac II had soldered batteries. You can always jump start the II, IIx or IIfx power supply using a single 3V battery. Connect a test clip to the rightmost pin on the logicboard power connector. Attach that to the + side of the battery. Then touch the metal case of the power supply for a few seconds with the - side of the battery and the PSU will turn on. I actually start my IIfx like that all the time because I don't want to have any batteries sitting inside. I ran some wires outside the back and plug in a small board containing a battery and a pushbutton every time I want to start it up. All my Mac II(x/fx) have those wires. No soft-power from the keyboard that way but I don't need that.
  7. Bolle

    SE/30 PDS Adapter Epic Blunder

    Those are all fixable. I’d even pay for them with those bend legs. Edit: chips look legit at least. Mine has the exact same holes on the four corners. Logo and part numbers seem good as well.
  8. From left to right on the lower picture: -Digidesign Audio Interface card -some kind of graphics card -Radius Thunder IV - you hit the jackpot here -Digidesign Sample Cell
  9. Bolle

    SE/30 PDS Adapter Epic Blunder

    It is only the ASIC that got struck by 12V though. The GALs should be fine, at least there are no lowered resistances to ground or Vcc on any of their inputs/outputs.
  10. That bad ROM was on the logicboard you sent along though. To get things straigt: -no external video from the Micron card -> see picture above. -single vertical line on that same card -> bad VRAM replaced -horizontal lines on your SE/30 logicboard -> flipped bits in the video ROM
  11. Bolle

    SE/30 PDS Adapter Epic Blunder

    He however has the older Turbo 040 revision that does not have the ASIC but a lot of GALs instead. Totally different story. There are going to be at least one (maybe more) dead GALs on there. However keeping a few of those ICs around if they are legit might still be a good thing just in case.
  12. Bolle

    SE/30 PDS Adapter Epic Blunder

    Hm, might be different if we split the risk? Let‘s see what @JDW says. I’d throw in some cash as well for a few chips.
  13. The line was also there on an external screen. Actually the card I got here is the exact card that started this thread.
  14. Bolle

    SE/30 PDS Adapter Epic Blunder

    Most important question: how many chips would you get for $50?
  15. Bolle

    SE/30 Logic Board Resurrection

    Might still be a bad trace. What traces did you check in the beginning? Everything that comes and goes to the SCSI chip? Also make sure all your soldered connections are good. Most of the time when it does the no thing it is one of the data bus data lines that’s not connected to the chip. When one of the SCSI data lines is broken you get the HDD light flashing at the same rate as the