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Everything posted by trag

  1. trag

    Apple ][ Plus Soldering

    My one big recommendation is to get a bottle of liquid solder flux, such as this: https://www.amazon.com/dp/B004RIF3BM/?coliid=ILLIJY0JW504Q Many difficulties during soldering and especially desoldering can be laid at a need for more flux. Flux forms a conductive layer that helps conduct heat from the soldering pencil to the work. As well as preferentially combining with oxygen and thus preventing oxidation of the work.
  2. trag

    AdobePS & PostScript Printers

    Yes, that's the gotcha. The older Xerox Phaser printers' data/spec sheet had a field for "network protocols" or some such. That's where tcp/ip, spx/ix (?) and Appletalk would be listed. They don't specify those things any more. It can be very difficult to determine what network protocols are supported. They have dumbed it down to just telling you want OS's they think they support. I suspect Appletalk has disappeared from most new printers, but I keep hoping that the companies which used to support it, would just leave it in through inertia.
  3. trag

    Fizzbinn’s Finds

    Interesting. Thank you for sharing your results.
  4. trag

    SE/30 PDS Adapter Epic Blunder

    Fantastic. And especially wonderful that the chips are authentic. Who knew they were just laying around waiting to be picked up by the resourceful joethezombie.
  5. trag

    Help resurrecting a 7500/100

    Not Mac ready, but inexpensive SIL3112 cards. I have not verified that these are genuine/functional, etc. https://www.ebay.com/itm/PCI-SATA-2Ports-SIL3112/233388086306
  6. trag

    Newer Optical Drive Compatibility

    That's good news. I'm glad it worked. There's a way of "embedding" the driver in the CDROM boot blocks or some such, so perhaps that's how they did it on the installation disk. My memory of all that is very hazy. Maybe someone else will happen by to point at a guide to making bootable CDs for older Macs. I remember that there were details. Alas, I do not remember what any of hte details were...
  7. trag

    Help resurrecting a 7500/100

    That generation of Mac does not have any drivers for IDE chipsets built into the ROMs. So any usable card must have Macintosh firmware installed on the card. That means it was either made to be used with a Mac, or someone took an equivalent PC card and changed the ROM/firmware on the card from PC to Mac. The SIL3112 SATA cards can be hacked. Some of the Promise cards were used for Mac versions, but I"m not sure about hacking them, except the ATA-66, but that's old and feeble. I'm pretty sure all of the Acard PCI cards had Mac versions. There's probably some exception to that last.
  8. trag

    Newer Optical Drive Compatibility

    You can probably find the System Folder on the installation CD and get the CDROM/DVD extension out of the extensions folder, then drag it to your hard drrive based system folder.
  9. trag

    Newer Optical Drive Compatibility

    The CD-ROM for the OS installer has an optical drive driver built-in which supports your BluRay drive. The CD-ROM/DVD extension in your hard drive based OS does not support your particular optical drive. Try using the relevant extension from System 7.6. Apple goofed and shipped one version that doesn't check the model of the optical drive and just works. They "fixed" this in 7.6.1, IIRC, and all the 7.5.x versions have the same restriction. I think the 7.6 version was the "open" version. I'm a little surprised that CDROM tool Kit doesn't do the trick, but I think ver. 2.3 is fairly early. A later version or Speed Tools CDROM driver might do the trick. I seem to have a copy of SpeedyCD up here: https://www.prismnet.com/~trag/SPEEDYCD.SEA.hqx you could try that.
  10. Nice bit of serendipity...
  11. trag

    Lucky IIx acquisition

    Nice. That's the early IIx upgrade, before the PowerCache card with adapters became standard for Daystar. With the giant cache card on top. Very cool and at least a little rare.
  12. There are something like three jumpers (it's been years since I looked) near the front middle of the logic board. I've never been able to figure out what they're for. Perhaps they're misconfigured? Unfortunately, I also don't remember what the correct configuration is (all unoccupied?). But someone with IIfx handy should be able to look.
  13. trag

    SE/30 DiiMO accelerator cloning

    Atmel and Altera, I think, still have 5V CPLDs in production. I'm certain Atmel does. Not sure if there are any actual FPGAs out there, although the lines between them blur.
  14. trag

    SE/30 DiiMO accelerator cloning

    I think he's looking at the GAL based Daystar Turbo040 card for that possibility. Although, since a limited supply of the large ASIC used on the later Turbo040 was found, it might just go in that direction, at least while the supply of ASICs holds out.
  15. Nice work. Please continue sharing. It is fun to follow along. Thank you.
  16. trag

    Classic AB Rev.1 vs. Rev.2 Cap differences?

    Doh, I forgot to include the link. "this post" was supposed to be followed by a link. Sorry about that. Looks like the info came through from Superjet2000 anyway. Ah, here's the link I meant to include: https://68kmla.org/forums/index.php?/topic/55194-6100-7100-8100-9150-pds-connector/&do=findComment&comment=604079
  17. trag

    SE/30 DiiMO accelerator cloning

    Very nice. Looking forward to following this.
  18. trag

    Fizzbinn’s Finds

    Yep, the ones on the bottom. On the 6400 the analogous pads provide 8 of on-board memory. 8 MB is not a substantial increase, but if populating those pads works, then one could also try adding larger amounts of memory through that bank's signal lines. Perhaps, install a 128MB DIMM (2 banks of 64MB) in one of the DIMM slots and then run (a) wire(s) from the RAS line(s) for the pads, to the unused bank on the DIMM. Note this would also require making sure the two banks' RAS lines on the DIMM are isolated from each other and only one bank's RAS lines are connected to RAS signals provided by the DIMM slot.
  19. trag

    Fizzbinn’s Finds

    I keep wanting to populate the RAM pads on the 6500 board and see if the memory can be boosted above 128... It uses a weird package for the RAM chips, though.
  20. trag

    Classic AB Rev.1 vs. Rev.2 Cap differences?

    I think the information you want may be in this post, although I did not check in detail. Also, once you find one connector on Digi-Key's website, if you look lower on the table they provide, there's a link for compatible or mating connectors. It leads to a list of connectors that mate with the one you're currently viewing.
  21. trag

    The biggest haul I’ve ever made.

    If you present an image from which we can read the markings on the RAM SIMM chips, we can figure out the capacity from the datasheet(s) for the chips on the SIMM boards.
  22. trag

    Major Score! 8600 with Sonnet CPU, 3DFX card, Etc

    I have had good experience with the IWII adn the cut sheet feeder. I think the thickness of paper one uses may affect how well it works.
  23. trag

    SE/30 video issue that has ME stumped!

    Fun and informative narrative. Thank you.
  24. The trick is to find a card which uses teh same chipset as was used by a card for which there are Macintosh drivers (extensions/CP). 3Com tended to make their own chipsets, so unless there was a 3com based Macintosh card, that's probably not goign to work.
  25. trag

    Floppy drive for Macintosh IIfx

    I didn't read the middle very carefully, but I think the page is incomplete in terms of what was once widely known floppy information. Near the end of the page, the author writes that auto-inject floppies failed in the PM8500, with the symptom that they continuously tried to eject. IIRC, this is caused by using the wrong floppy cable. There are red striped and yellow striped floppy cables and the wrong one causes that symptom in auto-inject floppies, again, IIRC.