Jump to content


  • Content Count

  • Joined

  • Last visited


About johnklos

Contact Methods

  • Website URL

Profile Information

  • Location

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. johnklos

    Solid State Drive for G3?

    To be clear, drives larger than 128 gigs are not supported on IDE. SCSI has no such limit. But you can get around that in OS X with the Intech SpeedTools Hi-Cap driver. The first 128 gigs will be seen while booting, and after the kernel loads the Hi-Cap kext, the rest of the drive will be seen. I have a first gen iMac motherboard with a 2 TB drive with one 8 gig partition, then a 120 gig partition (where gigs are 2^30 bytes), so the system boots the 10.4 kernel from the 8 gig partition, then uses the 120 gig partition as the boot drive, care of OWC's XPostFacto. Then, as the system is booting, the rest of the 2 TB drive is seen, and /Users is mounted there. I believe the beige G3 has the same limitations.
  2. johnklos

    PowerPC overclocking and limitations

    BTW - imgur sucks. First, as we can all see, embedding images from there doesn't work, and second, they want to take hundreds of megabytes and billions of instructions per second to run their Javascript just to load their silly pages.
  3. johnklos

    PowerPC overclocking and limitations

    PowerPC CPUs are overclockable, yes. Good cooling is always a good idea, overclocked or not. You see a not very fancy aluminum heat sink on many of the 601 and 603 CPUs because they really didn't draw much power and therefore didn't generate much heat.
  4. johnklos

    Large volumes in a 68030

    You most likely need to use Apple HD SC Setup (patched) or an older Drive Setup. I always thought Drive Setup would DTRT when running on an '030, but I suppose not. If I had to guess, I'd guess you have a Drive Setup from 8.0 or 8.1. Somewhere there's a list of versions of Drive Setup, the versions of SCSI drivers they install, and what models of machine are supported by each version, but I don't know where that is off the top of my head.
  5. johnklos

    LC/LCII/LCIII power connector

    I would like to know a source for these, too. I found something that fit the pins, but the spacing was off. Luckily, it wasn't off enough to make the whole connector not fit. Q605 with adapted power connector On the other hand, since only four of the connectors are needed, perhaps two side-by-side two pin connectors would do. Either way, something readily available would be nice.
  6. I've always heard that the baking soda helps with anything acidic, but the vinegar is to remove any minerals after washing and cleaning. So yes, those, then distilled water with no minerals seems to make sense based on what I've been told. What's IPA?
  7. You're not talking about beer, are you? I was given a severely corroded LC II motherboard which I thought might never run again. Since the capacitor goo ate away some of the traces, some came up a bit simply from cutting the leads. I washed the board with soap and water, with baking soda to neutralize any acid and to act as a surfactant, then vinegar to remove any minerals, then with distilled water to remove any vinegar. I also used toothpaste and a toothbrush to physically remove gunk and corrosion. I then repaired all traces, installed new caps and tried it out. Guess what? In spite of the poor state, it works! It really all depends. If you have nothing to lose because a board doesn't work, then do whatever you have to do to clean it. But being aware of how minerals might affect things. If you have high mineral content in your area, then maybe dishwashing isn't a hot idea. If you have water softening or very low mineral content, then why not? For removing caps, sometimes you can't help screwing things up no matter how hard you try. I have those precise needle nose side cutters which are meant for this very thing, but if the pads are literally floating on goo and corrosion, you just have to make due.
  8. johnklos

    Sonnet Quaddoubler project

    It seems the NeXT forum is available again: http://www.nextcomputers.org/forums/index.php?topic=56.0
  9. That separate thread is gone. You can't just post a link to a Windows executable without any description and not expect people to be a bit suspicious. Also, it appears to have a ROM file, which is not allowed here.
  10. johnklos

    68K (no Mac) Designs OK?

    I had a Sinclair QL, which was quite a fun little machine based on the m68008. Of course, there's the Atari ST, the Japanese LUNA machines, Sony's NET WORK STATION workstations, NeXT, of course, Sharp's X68000/X68030 series, Hewlett Packard's 9000 Series 300 and 400 workstations, Suns, Apollos, plus lots of VME boards, including multiprocessor systems. Let's not forget the Tandy TRS-80 Model 16 and Tandy 6000! There were plenty of others I'm not remembering right now. I'd love to build a simple system some time using either the 22 address bit version of the m68008, or perhaps an m68030 since it can size its bus to 8 or 16 bits, plus it can run Unix / BSD without extra chips because it has an MMU. One day!
  11. johnklos

    Full 68040 for Quadra 605

    Is it a 5 volt or 12 volt fan? I forget. Noctua has 5 volt and 12 volt available at that size: https://smile.amazon.com/Noctua-NF-A6x25-5V-Computer/dp/B01K4HRLRI/ https://smile.amazon.com/Noctua-60x25mm-Blades-Bearing-Premium/dp/B009NQMESS/
  12. johnklos

    Full 68040 for Quadra 605

    Hey, Fernando! Yes, heat is an issue if you're running at 40 MHz, but if you have an L88M or K63H mask, it's already cool enough. For an early mask (any XC part) at 33 MHz, you need a heat sink or you need to make sure the fan in the case works, and for an early mask at 40 MHz, you really need both the heat sink and fan in order to make sure the CPU doesn't overheat. Most '040 sockets have clip mounts on the sides, and the heat sinks and clips that one can get from Quadra 650 / Quadra 800 machines fit fine inside of a Q605 / LC475 case. Or, when the socket doesn't have clip mounts, or when you don't have the right clip and heat sink, you can always use something like Arctic Alumina thermal adhesive epoxy to hold on a proper heat sink. It's pretty permanent (I've never tried to get a heat sink off after adhering it), but works well.
  13. johnklos

    Apple Set Top Box

    If I remember correctly, AV machines require an FPU. Try swapping in a full m68040.
  14. johnklos

    RaSCSI Development Thread

    That'd be called a SCSI card You can give Basilisk a file device, or you can give it direct access to a block device, so all you'd need is a real SCSI card plugged in to the SCSI device of your choice.
  15. johnklos

    Original Hackintoshy Thing

    http://www.maccaps.com/MacCaps/Repair_books_files/Macintosh Repair and Upgrade Secrets.pdf Page 168 and on describe the adapter. It's just a 74LS14, which is just an inverter with a Schmitt trigger, which just cleans up the signal so superfluous changes aren't reflected on the output. The board in the first picture has a 74F253, which may be used to decode address bits or something like that for... a hard drive LED? It'd seem strange to have so much circuitry for just that, but I don't see any other hardware in there that would make use of this...