Implement the PPU (poorly) #3
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fine. go, you win.
Seems to fix the endless scrolling on dmg-acid2
the clock rate ticker being defined and started outside of the loop made for some interesting problems w/ the debugger, as the ticker kept on ticking while the debugger was active. Instead, we can use time.After w/ the nice new automatic GC-ing in Go 1.23+ This also gets the Nintendo logo scrolling down nicely when running w/ the boot rom 😄
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This is getting large enough where it's time to just merge it in its broken state and iterate on, rather than keeping this long-running branch going. Scrolling Nintendo logo is good enough for now! |
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Basic idea is to get rendering somewhat working. Not looking for cycle accuracy or matching the behavior of the pixel FIFOs, but hopefully getting parts of
dmg_acid2passing.Very much still going off of DMG-01 & pandocs, but this is about where DMG-01 hits incomplete, so filling in some of the other details as I go
Current state
Background, window, and object rendering are all implemented, but I suspect there's something broken with windowing, something also not quite right with object priority, and probably more.