Manuel wrote:
> I did some further research, so I'd exclude Air Raid and both Goliath games
> as possible origin. All three seem to share portions of Space Jockey.
Never doubted that. I don't think the pirates invented anything.
> Space Jockey is from 1982, so it's older than all Atari titles on the list.
>
> Space Jockey 1982 / Garry Kitchen
I tend to agree. Space Jockey uses an early version of the code (eor #$0f)
which requires an additional adc/eor $80 to get the correct value.
> I assume it's safe to assume that with Garry the routine wandered to Coleco, so
these can possibly excluded as well. But I still wanted to check the dates anyway.
Aren't Garry and Steve Kitchen brothers? That would explain it too.
And I think it' is interesting that Activision's programmers learned the trick
quite "late" (well, still almost 20 years before we did ;-).
Have?fun!
Thomas
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