← Back to context Comment by wkjagt 8 days ago The 6502 doesn't have separate io addresses so you need to fit all devices in a 64k space, not just ROM. 2 comments wkjagt Reply p0w3n3d 8 days ago Atari 130XE used bank switching to handle more memory along with the IO-reserved memory (i.e. you had an address $D301 where you would change bits for the memory bank, and it would redirect $4000 – $7FFF to another bank in the extended memory) wkjagt 7 days ago Yeah the Commodore 64 did something similar. I love that era of hardware.
p0w3n3d 8 days ago Atari 130XE used bank switching to handle more memory along with the IO-reserved memory (i.e. you had an address $D301 where you would change bits for the memory bank, and it would redirect $4000 – $7FFF to another bank in the extended memory) wkjagt 7 days ago Yeah the Commodore 64 did something similar. I love that era of hardware.
Atari 130XE used bank switching to handle more memory along with the IO-reserved memory (i.e. you had an address $D301 where you would change bits for the memory bank, and it would redirect $4000 – $7FFF to another bank in the extended memory)
Yeah the Commodore 64 did something similar. I love that era of hardware.