Jump to content

Forums

  1. Important Information

    1. The 68kMLA Forum Rules   (5550 visits to this link)

      To quote vintage Apple manuals: "Read Me First!"

  2. Community Connections

    1. General 68kMLA News & Stuff

      What's going down in the barracks.

      3959
      posts

    2. Conquests

      Discuss your latest vintage Mac finds!

      35561
      posts

    3. Trading Post

      Feel free to trade all of your Mac goodies here with all honest intentions. The website provider assumes NO liability, so buyer beware! Please see this topic for more information.

      40565
      posts

  3. Projects & Hosted Forums

    1. RetroChallenge

      What can you do given only one month and strictly "retro" hardware? Find out with RetroChallenge!
      http://retrochallenge.org/

      1425
      posts

    2. 68kMLA Wiki

      The creation and maintenance of the 68kMLA's information repository.
      http://68kmla.org/wiki/

      398
      posts

  4. 68k Model Forums

    1. Compact Mac

      Macintosh, 512k, SE, etc.

      36686
      posts

    2. Mac II, Quadra & Centris

      Just think, having a Quadra 950 in 1992 would be like having a Mac Pro today… except with more slots, more expandability, and on-board SCSI!

      10629
      posts

    3. 68k LC & Performa

      Ah, the consumer computers!

      6689
      posts

    4. 68k PowerBook

      From the Portable to the 190cs.

      8195
      posts

  5. PowerPC Model Forums

    1. NuBus Power Mac, LC & Performa

      The NuBus architecture gets a new brain!

      2149
      posts

    2. PCI Power Mac & Performa

      The PPC comes of age and adopts the industry standard expansion slot.

      4952
      posts

    3. G3/G4/G5 Power Mac, iMac & eMac

      From the Beige G3 to the quad-core G5, via various iMacs!

      11663
      posts

    4. PPC PowerBook & iBook

      All that power in a laptop? Never…

      7967
      posts

  6. Everything Else…

    1. Apple I, ][, /// & Lisa

      Not really 68k Macs, but certainly Vintage!

      6220
      posts

    2. Newton

      The best PDA ever finally gets its own forum!

      894
      posts

    3. Software

      Includes system stuff, productivity, emulation, design, and games for pre-OS X Macs!

      15349
      posts

    4. Hacks & Development

      Yes, it's back! Hardware hacks/modifications and software development for Mac OS.

      14574
      posts

    5. Peripherals

      Anything you can hook up to your Mac or stuff into it as an interface!

      11492
      posts

  • Posts

    • Gorgonops
      4116 memory For Apple II

      By Gorgonops · Posted

      What does the output look like? According to the Apple II Reference manual the arrangement of the memory is as so: The row of RAM chips closest to the front of the machine has RAM starting at address 0. Next row is the RAM after that, etc. So if, for instance, you have output saying you have a bad RAM cell at location 0x434A, which is 17,226 in decimal, and your machine has the full 48k with all rows equipped with 16k DRAMS (which you'd expect on a Plus; any surviving Apple ][ with 4k DRAMs would be a heck of a find) the bad chip will be in the middle tow. The leftmost column of chips is the least significant bit. So if the program's output tells you it's the 5th bit that's stuck then it's the fifth from the left.
    • olePigeon
      4116 memory For Apple II

      By olePigeon · Posted

      You might have better luck asking on vcfed.org.
    • Cory5412
      4116 memory For Apple II

      By Cory5412 · Posted

      Keep an eye out during Kansasfest this year, because just the other day, someone on the kfest mailing list asked if anybody has any bad 4116 RAM chips on a motherboard or on a language card or other card that might have those chips.   I think they're working on a software tester or perhaps work-around tool.
    • MrGasS27
      Cloning SCSI2SD... Is it an Impossible Mission?

      By MrGasS27 · Posted

      I know, my SCSI2SD v5 board has 100ohm resistor packs. However, I'll hope that they'll release the v5 board's sources in future (It's an improbable thing, but dreaming is costless)
    • saybur
      Cloning SCSI2SD... Is it an Impossible Mission?

      By saybur · Posted

      Yeah, the 110ohm resistors are definitely getting harder to find.  SCSI allows an alternate configuration using 100ohm packs and dropping the terminator voltage to ~2.63V or thereabouts, if you want to try that in the future.
×