> Can anyone tell me what happens if you READ from the WRITE
> bank in a RAM cartridge? For example, if the lower 256 bytes
> are designated as the WRITE block and I READ bytes at those
> addresses, does the data get clobbered?
The superchip can't tell whether the CPU is reading or writing (because
there's no R/W line on the cart socket) so it will assume that it's a write
because of the address. But since the CPU is reading, nothing will be
driving the data bus, so the RAM will be written to with some *unknown*
value. The CPU will also read some unknown value for the same reason. That
value may well be $ff, or it could just be noise - haven't tried it. Either
way, I would expect it to be reliable.
Alex
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