Two Stop Bits | The UCSD p-System, Apple Pascal, and a dream of cross-platform compatibility

The UCSD p-System, Apple Pascal, and a dream of cross-platform compatibility (pascal) (markbessey.blog)

4 points by amoroso 19 hours ago | 3 comments

Rochus 7 hours ago
Cool project. Is the discussed p-system still 16 bit, or does it support a larger address space?
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- KODust 3 hours ago
  Apple Pascal supported > 64k of RAM on suitable machines, so it probably already did?
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  - Rochus 2 hours ago
    Apple Pascal on the Apple II was restricted to 64 K memory; this limitation was due to the 6502's 16-bit address bus. The Apple III with it's 6502A could address 256 K, but only by bank switching; pointers remained 16-bit. The later Pascal versions (after Apple III) did no longer use P-code, but compiled to native code.
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