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by runaway pancake
Thu Jan 05, 2012 2:16 pm
Forum: NESemdev
Topic: Valid addresses for program execution?
Replies: 32
Views: 15510

Valid addresses for program execution?

I've searched everywhere but can't find an answer to this. Do any games execute instructions from outside of 0x8000-0xFFFF? I'm writing my cpu and memory handler now and I need to squeeze all the speed I can out of them. I ran into this problem when running blargg's instr-test-v3 single test roms an...