Posted By
JamesC
on 2003-04-16
|  One more thing
the 7501/8501 run at .88MHz when displaying the screen, but 1.76MHz when the screen doesn't have to be updated. Note that your C16 blanks the screen when you load or save on the Datasette, and also blanks when you press F1 on your Plus/4. This is so that the processor doesn't have to be interrupted by TED, and TED can kick the processor up into 'Turbo' mode.
Putting a 6510 in a 7501's socket (presuming it can be adapted, the pinouts are different as well) would leave the system running at 1MHz instead of .88MHz, or similar to running a 50Hz record player on 60Hz electricity..... if it works it'll garble the output.
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