Yes. In fact this is how the I/O port is used in the c64 for the largest part. The PLA just helps while the I/O port controls the memory banks between ram, rom, and the c64 chips. On Wed, Nov 17, 2021 at 8:02 PM Claudio Sánchez <tokafondo_at_gmail.com> wrote: > > From 6510 datasheet, description section. > > "An 8-bit Bi-Directional I/O Port is located on-chip with the Output Register at Address 0001 and the Data-Direction Register at Address 0000. The I/O Port is bit-by-bit programmable" > > Let's forget about the C64, because it has a PLA that has its own behaviour. > > Can this I/O port be used in a new design as chip select for memory banking? >Received on 2021-11-18 07:00:03
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