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Compgeke

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Everything posted by Compgeke

  1. Compgeke

    MacSD - new SCSI SD card emulation tool

    Basically any Toshiba or Plextor can. XM-5401B, PX-40TSe, etc, etc. I know Sanyo can not for sure (used in some LaCie drives). The CR504/CD600i iirc is jumperable too, using the 2nd from the far right jumper to enable 512 byte sector support. The 300i might also support that, but I don't remember off the top of my head.
  2. Compgeke

    MacSD - new SCSI SD card emulation tool

    Does the CD emulation support 512 byte sector reads? It's an issue with real CD drives on Unix machines and not dealing with real CDs on those would be great.
  3. Compgeke

    Compgeke's Acquisitions

    I get enough junk I figured I should start a thread for the odds and ends I get. I'll start with today's pickup: A NeXT Cube. A friend sent me a link to one on Facebook Marketplace last night for $200, and by some miracle it was still available! It's a little beat up but shoot, the price was right. Let's ch Let's check out that motherboard. Hey! It's got a 68040! This machine's not actually marked as being a Cube but instead just a NeXT. It's been upgraded at some point. It also looks to have 8 megs of ram. That's acceptable - probably period. Not only did it come with the software and stuff, it also came with NeXT branded power leads. Never seen these before! Oh yeah, and printer is S/N 56. Wonder how many of these they made.
  4. Compgeke

    Compgeke's Acquisitions

    Sure!
  5. Compgeke

    Compgeke's Acquisitions

    New Machine: Outbound 125. Got this from that ebay auction that ended last week! Not sure if it works or not yet - I need to get batteries for the keyboard.
  6. Compgeke

    Compgeke's Acquisitions

    A few months ago I picked up a Mac IIci and a Mac IIsi for $40 off Craigslist. Tonight I got around to mostly finishing the IIsi . All things considered, the IIsi wasn't in the worst shape I've seen them. Some leakage, but not extreme. Power supply certainly wasn't pretty though. But what the heck, that's literally the reason I created the mAcTX. While I was in there, I also went ahead and replaced the 1/2 AA with a CR2032 and added a CPU heatsink. I've got a 50 MHz crystal to swap in eventually to overclock the machine to 25 MHz. I just need to unclog my desoldering gun . So here's how it sits now! I still need to go through and clean up the fan and where the fan goes on the chassis. Both are advanced caked with dust, not the kind of dust just some air will clean off. Gotta scrub it. I'd ultimately bought this lot so I could design a DC input holder for the mAcTX board. here's how that looks Overall I'm not upset with how the IIsi came out. It might not be my favorite machine, but they certainly aren't the worst! The IIci will need a lot more help when I get to it. I already know all three of the soft power related chips are shot, as is the bus driver for the last nubus slot.
  7. Compgeke

    Compgeke's Acquisitions

    Came with what was once NeXTSTEP 0.9 and 1.0, but since overwritten. + one generic NeXT branded blank disk and one random third party disk. (Late post, how'd I save it instead of posting?) What's currently on them? Great question! I'm going to try and image them in a SCSI MO drive to see if I can pull something off them. Unfortunately I can't go recap and get started working on my Cube's built in drive as it's slightly burnt. I guess that's why it came completely disconnected with the interface ribbon cable missing.
  8. Compgeke

    Compgeke's Acquisitions

    Came with what was once NeXTSTEP 0.9 and 1.0, but since overwritten. + one generic NeXT branded blank disk and one random third party disk. What's currently on them? Great question! I'm going to try and image them in a SCSI MO drive to see if I can pull something off them. Unfortunately I can't go recap and get started working on my Cube's built in drive as it's slightly burnt. I guess that's why it came completely disconnected with the interface ribbon cable missing.
  9. Compgeke

    Latest Trade: Mac IIci and others

    Check on these two chips specifically, the 74ALS240 s. I've had three boards where I had to replace themme to make nubus work again. They're the bus drivers for the slots, so they're reasonably important for the functionality of the slot. The bottom one usually goes first.
  10. Compgeke

    BGE's take on the Quadra 900/950 ATX PSU Mod

    Relevant to the thread, so I'll crosspost it here
  11. Compgeke

    Quadra 630 ATX Adapter

    Alright so use this as constructive feedback and *not* criticism of the board - I want to help avoid the mistakes I did with the mAcTX board :). So one of the first things I notice is you have the connector for the PicoPSU and the Mac harness on the same side of the board. I'd swap that Mac harness connector to the back side of the board, allowing for you to run the picopsu into the hole for the original PSU and keep the 12V lead for that going straight. The next thing I'd do is try and keep all the small parts to one side of the board, away from the middle in between the two connectors. It'll look more pretty and professional, but also follow onto the next tip. Switch to planes over traces. 5V and Ground shouldn't be traces, at all. Use planes right off the bat. The reason for this is it allows for a cleaner board layout and allows for higher current handling. You'll still have some rails like the +12V that need routed as a trace, but using a 75-100 mil trace will suffice, just run it around the outside edge of the board. These machines are very 5V heavy so you want to make all the space you can for that. I've attached a couple images of a halfassed Q630 compatible board. It's basically a rough draft of what I'd do myself. It's basically a modification of the mAcTX IIc layout, but for a Quadra.
  12. Compgeke

    Quadra 630 ATX Adapter

    Here's a sloppily trimmed and annotated version of the schematic from the mAcTX IIc. This is the setup I had to use to make soft power reliably work one everything. I've not tested this on a Q630 - but it does work on all the machines the board fits into.
  13. Compgeke

    mAcTX - ATX to Classic Macs

    It's been a while, but I finally have an update. I've got my hands on a 3D printer I can borrow as long as I need, meaning I can actually do brackets without waiting on shipping for every change. The first one is for the IIsi - it's nearly completed. Made a few small changes from this test, waiting on that one above to print. It's almost fitting. As soon as I can get the IIsi done, I'll whip up something for the IIcx/ci/whatever afterwards. Once all that is done, I'll get some brackets made up by a friend with a much better printer. The prints from this M3D Micro are nowhere near the quality or strength required for actual use - I'm having to reinforce the latching tabs so they don't snap off right away. It's an issue with this printer only though, it's not particularly accurate.
  14. I've recently picked up my first SE/30 (well, a logic board) and I'm not feeling the love for them so far. It was recapped, but non-functioning when I got it. It'd turn on, and one of a few things would happen. It'd do nothing, it'd chime then death chime a few seconds later, it'd death chime right away and occasionally I'd get a solid white display with death chimes. I've tried with various ram combinations, varying from 1 to 64 megs of ram (sets of four) to no avail. Also cleaned the RAM and ROM SIMM slots with deoxit to no avail. Step 1 was giving the board a very good cleaning, something it badly needed. Previous owner hadn't done a great job at the cleaning part. This changed nothing. Step 2 was redo the recap with my own capacitors. This helped to make sure everything was the correct way around and all the solder joints were good - it was hard to tell with the previous recap job. This did not fix the problem either. Step 3 was to give the board an even better wash. Now it's pretty much spotless - can't even see crud under ICs. This still did not help. Step 4 was try a different ROM. With my IIfx ROM we're at the current state. So, with the IIfx ROM swapped in, fully recapped and cleaned, it'll turn on, chime and give a solid white display with some raster lines in it. If I check the dead mac scrolls, it says it'd be an analog board problem, however said chassis works absolutely fine with an SE board, so I'm not inclined to go with that. At this point, I'm inclined to believe the next step would be start ohming out traces. Before I get through beeping hell, I figured I'd see if anyone else has run into this issue and if they found a solution. I'm not in a big rush to start beeping out everything .
  15. Perfect, UE8 is the right track. Desoldered it, did an extra cleaning under it to be safe. Resoldered in and it changed to "Digital Snow" as I'll call it, in 3 distinct columns. I'll order a replacement 74*LS*166 and solder that in with my next parts order. Hopefully that'll get me somewhere else. Couldn't find one to salvage off anything kicking around!
  16. Compgeke

    Radius System 81/110

    I've got an 81/110 and I paid $75 for it last year, working. They aren't too common but unlike a Daystar Genesis MP, they aren't super desirable either. Absolutely worth grabbing for ~$120 or under, imo.
  17. Compgeke

    mAcTX - ATX to Classic Macs

    Macintosh LC Macintosh LC II Macintosh LC III Macintosh LC III+ Performa 450 LC 475 Performa 475 Quadra 605 Probably some I'm missing here. Apple's product lines were crazy.
  18. Compgeke

    mAcTX - ATX to Classic Macs

    Future Plans: In the works right now are: Quadra 630/6200/etc chassis machines. This one's very early with no finalized design. We need to pull a machine apart and get measurements internally to determine what needs to go where exactly (on a PCB. connector wise). This one's being worked on by @blusnowkitty and is in very early concept stage. Macintosh II/IIx/IIfx. I'm working on this one and I've got some sample connectors from Molex and measurements done on how the PCB fits into the case. This one will be using a Flex ATX PSU since there's plenty of space inside the case and you might want to load up your IIfx with dual Radius Rockets and dual 24 bit Color cards and a network card. That'll draw some power. I've also got an OG II with a dead PSU - and recapping was not the solution (and I don't feel like digging into it right now). Astec problems.
  19. Compgeke

    mAcTX - ATX to Classic Macs

    So here's the rundown since the thread kind of turned into a jumble. There're two versions currently just about ready to go. Final hardware revisions done and all that stuff. Just working on the other random stuff like documentation rather than hardware. That, and sorting out 3D printed parts. The first is the mAcTX LC. This one is for the LC 1/2/3/Performa variations/etc. This is the final design and setup for how it works, sans that heatshrink on the motherboard lead. That'll go. The next is the mAcTX II Compact. This one's for the Macintosh IIsi mainly but also works in the IIcx, IIci, etc, etc. Hardware wise it's done but I don't have the rear mounting bracket stuff finished yet. All the 3D printed tests are bummed off other people since I don't have a 3D printer myself. I've also got 50 PCBs and parts to assemble 20 full boards already here.
  20. Compgeke

    mAcTX - ATX to Classic Macs

    In an actual update, I've placed an order for a good amount the mAcTX Compact PCBs and those should be here next week. Parts to build 20 already came in and I'll see what I can do from there. The actual bracket for DC input on them has not been finalized - but it's mostly just a modification of the LC one to lop off the toggle mount and increase the pawls to stick out more. The IIcx and related chassis uses thicker plastic than the LC it seems. Of course, when I don't have a 3D printer myself it's a lot of testing and waiting for mail. I should get one. Additionally, I finally got around to getting another camera lens and that means better bracket pics for the LC variation!
  21. I've dug through the various threads both here and elsewhere on flashing these cards and found a bunch of different ways, some that work (like flashing the Wiebetech rom) and many that don't (like making the Seritek 1S2 ROM work). All of this is fun and all but the Wiebetech ROM is OS X only, no OS 9 support. After much playing around and planning to just flash the ROM with a proper programmer, I was reading through an old thread and found a reference to flashrom supporting SIL3112 cards. I decided to give that a try. flashrom does in fact support these cards but it requires a ROM image of the actual size of the rom, no flashing the 130someoddK image of the 1S2. My cards I'm using have an AM29LV040B ROM factory, meaning flashrom threw a size error. Padding the ROM to 512K got me around this problem, and I've confirmed works! So, here's a quick runthrough. First off, find a card with either a larger than 128K ROM (aka something that isn't an 010 ending). These socketed Silicon Image cards seem to have an 040, and there are some more of a similar style on ebay for $20. Next step is download the files I'll attach to this post and get them on a DOS boot disk. Run that and once booted type "flashrom --programmer satasii -w 1S2_512.ROM" and hit enter. This _will_ erase and flash the ROM on the card. If you want a backup of the original ROM first, type "flashrom --programmer satasii -r backup.rom" before the -w command. Finally throw the card in a Mac and see what it does. I've had this work twice now, no problems at all, under OS 9 and OS X 10.4 and 10.5. 3112_Flashing.zip
  22. Have the PSUs been recapped? They also need recapped and might turn on fine but as soon as more load is applied, they fall on their face.
  23. Compgeke

    Has anyone rebuilt TiBook battery?

    Please don’t do either of the above. That’s how we cause fires. You want balanced cells in a pack and you really really don’t want to bypass protection. It’s there to avoid fires and explosions.
  24. Compgeke

    mAcTX - ATX to Classic Macs

    I could, but I don't have much reason to. I don't think I've ever seen one of those fail. It wouldn't be hard since it's just a repinning of current design, I'd just not see much use. That, and I only have a Quadra 636. No 6400/6500.
  25. Compgeke

    mAcTX - ATX to Classic Macs

    Update: The 3D printed mount is now working great! Needed some slight modifications for tolerances but now it's working great.
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