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A comment on Build a 6502 Computer. Parent comment

Re:Build a 6502 Computer by LIV2 on Sunday September 15, 2019 @01:30AM (#20975729)
The problem is that the 6502 can only address 64K which includes ROM and IO Space so for any acceptable resolution you need tricks like bank switching and/or a seperate memory bus.

Even on the NES the PPU RAM is on a separate bus

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Re:Build a 6502 Computer by jmccorm on Sunday September 15, 2019 @02:01AM (#20975807)
What I took exception with was:

1. Not enough video memory to contain a full Mode 7 image on the VERA co-processor. 2. All co-processor access (including video memory) has to go through eight registers starting at $9F20.

No problem here with bank switching. I think that's great!

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