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Bolle

68kMLA Supporter
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    Germany - Bavaria

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  1. Just picked up board #1 from the post office. Still not sure why that honor hit me and also not sure if it should go onto my wall of logicboards or if I should populate it. Considering it’s a board that will work I guess it’s going to be populate and use it
  2. A0 and A1 are not present at the ROM SIMM, so everything is correct there. Still makes sense to check A2-A22 between ROM and CPU and see if one is missing. Also check all the data lines and the chip select signal for the ROMs. Another way to check if the CPU starts doing anything is to watch the address lines with your scope. If no ROM is there at all the CPU will act as a 32bit counter and cycle through all possible address line combinations to look for code to execute. If it doesn’t do this it either started to execute some ROM code but hangs really early in t
  3. You can interface the card shown in the original post to a VGA-style multisync monitor using the ECL-1 connector. All you have to do is add a 100ohm resistor at R13, which will give you a video signal in the proper voltage range (if wired up in parallel to red, green and blue) for VGA monitors on one of the pins on the ECL-1 header.
  4. At the front of the case there's roughly 3.5cm between logicboard and chassis. It gets slightly more space the more you move towards the back of the machine.
  5. I stocked up on those from a local supplier as I need them for all the other accelerators as well. Not planning to build any more of the DiiMO clones soon... but whenever I feel like doing another batch I will do so. I don't have any website or list of the things I ever did. These forums are the only place where I sell anything. When I finished building something it goes into the Trading Post and that's it. All of this happens next to my day job and shares its time with my other hobbies. Having a store or website with even more attention than there already is will be too
  6. Leave the board alone until it stops working (of that will ever happen, looking at the board I’d say it will just keep working forever if nothing else fails) Adding patchwires where they’re not needed is just going to make things worse. Those old boards have traces that are good for a lot of current by todays standards. You‘ve got a ton of room for play there even if they are corroded - which I actually doubt they are. It’s just the way the soldermask looks on those boards. All of my first rev SE boards look like that.
  7. No need to as I said earlier Just working on stitching everything together...
  8. No idea yet, but for gate arrays like the BBU and GLUE all the gates usually are the same. Once you figure out what kind of logic function it implements it's merely tracing out the wiring to get that back to the implemented logic.
  9. This looks veeery similar to the internals of the SE/30 GLUE. @siliconinsider has been working two days straight on dialing in his microscope to get clear shots and I am currently looking into methods to nicely stitch the images together.
  10. I have several programers. Two MiniPros (older and newer revision), an old GALEP3, a Xeltek Superpro and several Arduino-based DIY programers for specific tasks. They all won’t help you though when the security fuse is blown on PALs and GALs. You won’t be able to read them out easily when that’s the case.
  11. That looks very interesting, thanks for the writeup. An XC3030 should stay pretty cold under normal operation. On my early "Pro Tools Audio Cards" the config PROMs are XC1736D - but that shouldn't matter, they're all interchangeable when used with a 2000 or 3000 series FPGA. Sticker on mine says 1018R03. I can dump that one if you want to compare it to yours.
  12. Got a single 882 and then several Disk I/O, DSP Farm, Bridge I/O as well as a few of the original older ProTools interface cards and TDM Piggybacks for all of them. There’s also two Audiomedia IIs. Basically enough cards to actually fill two Macs or a whole expansion chassis (which I got the PPC Interface card for too) Curiois if you‘ll be able to just read out the GALs or if they’re protected. On most of the more higher end card there’s also at least one CPLD that’s going to be an issue getting the configuration out of it.
  13. Good one... got a few more Digidesign cards the other day and finally came around to try out the stuff from that software collection. There's indeed a cracked TDM Mixer 1.2 plugin hidden in there. I think I have seen v1.4 is there as well but didn't try that one yet. Looks like I can finally put all those DSP Farm cards to some use now.
  14. I will be done with reworking the quirks of the first revision. Once that's it done I'll create a second fork of the board with through hole sockets for the two large PLCC ICs. (68882 and GLUE) Sockets are going to be problematic, because most of the time the old parts you pull off a board will have corrosion and make very bad contact in a spring loaded socket. Having two board versions you can choose if you want it to be easier to solder (because through hole sockets) but with the tradeoff of possibly having to go through extensively reconditioning the ICs. Going for through ho
  15. No. You will always need a donor SE/30 board to pull off a few of the Apple custom ICs.
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