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A comment on What it was like developing for NES back in 1990. Parent comment

Re:What it was like developing for NES back in 1990 by city41 on Saturday August 07, 2021 @04:01PM (#28101373)
You could get the equivalent of hblank interrupts with a mapper, such as the mmc3 used in Super Mario Bros 3. That is how SMB3 renders its hud.

https://en.wikipedia.org/wiki/Memory_management_controller#M...

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