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← Double-checking Dawkins

pzmyers's Avatar Jump to comment 27 by pzmyers

This was on an Apple II, not a Mac, and it really isn't at all surprising. Back in those days (and I remember them well!), if you were doing any programming at all on 8-bit systems with memory mapped I/O, you got to know the locations of the various I/O sites fairly well. I couldn't do it any more, but once upon a time I also had them all memorized -- the places you could read to get the last keystroke, the routine to read the joystick port (which was tricky -- you had to strobe a write-only location, then read until it hit 0 again), and then there were all the fun and really dangerous addresses that managed the floppy disk controller...

Anyway, this was just a factoid that tells you Dawkins was an informed computer user of his time.

Sun, 02 Dec 2007 13:25:00 UTC | #88941