Recent content by David Cook

  1. David Cook

    Force32: persistent 32-bit addressing without a PRAM battery (updates thread)

    I think it might not work on the Mac Plus and SE in Systems prior to 4.1 If I understand the code correctly: 1. Check to see if you are running PowerPC code. If so, you must be in 32-bit or greater. 2. Check to see if you are running on the 128K ROM or newer (excludes Mac 128 and Mac 512) and...
  2. David Cook

    Missing pad; did I ruin my LC475 or can I fix it?

    I agree. 100%. If the capacitor has corroded the solder at all, it is difficult to get the solder to flow again. So, you end up overheating the area (and the glue the bonds the pad to the PCB).
  3. David Cook

    Writing an Application that Runs in Mac OS System 1 Using CodeWarrior Gold 11

    In MacOS.lib. Add it to a project. Click MacOS.lib in the project to select it. Choose Disassemble from the Project menu. You'll get a list of all of the routines included in this library, including a bunch that have the same name as the Apple routines. This is the glue. Now pick one of the...
  4. David Cook

    Force32: persistent 32-bit addressing without a PRAM battery (updates thread)

    Yes
  5. David Cook

    Force32: persistent 32-bit addressing without a PRAM battery (updates thread)

    Clever.
  6. David Cook

    Help : making a startup extension for 68k macs

    Nope. You were right the first time to look for other PRAM values. The Mac clock with roll over in 2040 and would break a pre-1984 PRAM test.
  7. David Cook

    IIci boots twice

    Do you have a PRAM battery installed? If not, then the IIci is setting itself to 24-bit memory mode initially. And then the System software is setting it to 32-bit and rebooting. Just an educated guess.
  8. David Cook

    68040 mhz

    Yup. And I overclocked my DayStar 68040 to 50 MHz. https://68kmla.org/bb/threads/daystar-powercache-030-and-turbo-040-on-iici-with-overclock-performance-results.44658/
  9. David Cook

    What is the true 'maximum' file name size a Mac application should handle?

    Great solution!
  10. David Cook

    Macintosh IIfx tries to start but won't catch

    Agree completely.
  11. David Cook

    Macintosh IIfx tries to start but won't catch

    That is an interesting premise. I've seen capacitors go two ways: juicy or dried out. I assume this has to do with the climate they are stored in. I wonder if all alkaline batteries eventually burst catastrophically, or whether a subset of the batteries pass a certain point (outgassing?) where...
  12. David Cook

    Macintosh IIfx tries to start but won't catch

    Wonderful. Thanks for the update.
  13. David Cook

    Macintosh Portable SLIM cards

    Pretty awesome!
  14. David Cook

    Macintosh Portable SLIM cards

    Very cool. How were you able to trigger it and generate that screenshot?
  15. David Cook

    Macintosh Portable SLIM cards

    Digging around in the ROM and source code, Apple originally planned to include removable disk cards on the Macintosh Portable. This would have predated PCMCIA cards. In the source file, EDiskDriver.a, Gary Davidian ("GGD") appears to have begun work on EDisks around June of 1988. He first...
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