Announcing ProDOS 2.4.1 for all Apple II and compatible computers


New version: ProDOS 2.4.2 is available here.

ProDOS 2.4.1 adds several improvements and bug fixes to ProDOS 2.4.

  1. Includes ROM ID detection for many Apple II clones, and workarounds for clone firmware bugs.
    1. Franklin Ace
    2. Laser 128
    3. Unitron
    4. Pravetz
  2. Updates MiniBas to version 1.2.
  3. Fixes a bug when launching ProDOS 2.4 from GS/OS using Closed-Apple to activate Bitsy Bye.
  4. Fixes a ROM bug in un-enhanced Apple //e when quitting to Bitsy Bye with 80-column mode enabled.
  5. Files on disk have been organized for faster booting and file access.
  6. ProDOS 2.4.1 moves GS/OS support code to the end of the file. This allows PRODOS to be shortened by 1K when used on compilation disks or other 8-bit use-cases where PRODOS will not be used as SYSTEM/P8.
  7. As a minor update, the ProDOS 2.4.1 KVERSION byte at $BFFF is the same as ProDOS 2.4, (I.E., $24)

Bitsy Bye is only $300 bytes long yet hides an Easter egg. Who will find it first?


140k ProDOS 2.4 disk image: ProDOS_2_4_1-dsk




John Brooks

Twitter: @JBrooksBSI

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About the Author

John Brooks

Apple ][ developer since 1979. Professional game developer since 1987. Cofounded Blue Shift, Inc. in San Jose, CA. in 1995, a company which develops video games, embedded systems, and provides engineering consulting services.