Apple-2-SW/prodos-drivers
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prodos-drivers/selector
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Joshua Bell 1260999b6c Add SELECTOR.SYSTEM capturing the behavior of ProDOS 1.x. Fixes #5 
Mostly just for historical interest.
2020-12-21 10:50:54 -08:00
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Makefile Add SELECTOR.SYSTEM capturing the behavior of ProDOS 1.x. Fixes #5 2020-12-21 10:50:54 -08:00
README.md Add SELECTOR.SYSTEM capturing the behavior of ProDOS 1.x. Fixes #5 2020-12-21 10:50:54 -08:00
selector.system.s Add SELECTOR.SYSTEM capturing the behavior of ProDOS 1.x. Fixes #5 2020-12-21 10:50:54 -08:00

README.md

Selector - Disassembly

The ProDOS operating system for the Apple II personal computer line supported a quit routine (invoked from BASIC with the BYE command) allowing the user to type the next prefix and name of a system file to invoke once the previous system file had exited.

  • ENTER PREFIX (PRESS "RETURN" TO ACCEPT)"
  • ENTER PATHNAME OF NEXT APPLICATION

This was replaced in later versions of ProDOS with much improved selector showing a list of files and allowing navigation of the file system with the keyboard.

But... maybe you are feeling retro? This SELECTOR.SYSTEM patches the old version of the selector back in. Like the other drivers here, it is intended to be placed on your boot volume to run on startup, and will chain to the next .SYSTEM file found. You can follow it with QUIT.SYSTEM in your driver sequence if you want to show the selector on startup.