Hi, all.
Here's my next big question that's been bugging me recently:
For the keyboard controllers, according to the Stella Programmer's guide,
it says you need to wait 400 microseconds after sending to SWCHA to read
the INPT ports. Has anyone written a small program to verify this? How
many cycles is it in reality?
Doesn't it compute to:
1 sec / 1000000 microseconds times
400 microseconds = 0.0004 seconds
1194720 cycles per second times
0.0004 seconds =
477.888 cycles = 6.288 scanlines?
Is it true? Why the long wait?
Thanks.
-John K. Harvey
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