From 0be10a289132f7ed9b42d5949db844227075e7ce Mon Sep 17 00:00:00 2001 From: crecher Date: Mon, 12 Oct 2026 16:30:32 +0200 Subject: ITS ALIVE (not rly no image yet) --- README | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'README') diff --git a/README b/README index 5db532a..605481d 100644 --- a/README +++ b/README @@ -8,16 +8,17 @@ emulator base - [x] cart package (iNES parser, mapper 0) system bus (nes package) -- [/] Bus type: 2KB RAM mirrored through $1FFF, PPU regs $2000-$3FFF (mirrored every 8), APU/IO $4000-$4017, cart $4020+ (need to do PPU and APU first) +- [/] Bus type: 2KB RAM mirrored through $1FFF, PPU regs $2000-$3FFF (mirrored every 8), APU/IO $4000-$4017, cart $4020+ (APU still missing) - [ ] OAM DMA at $4014 (stalls CPU 513/514 cycles) - [x] reuse it in nestest_test.go instead of the test-only bus -- [ ] CPU stall hook and proper IRQ/NMI line (polled between instructions) +- [ ] CPU stall hook and proper IRQ/NMI line (polled between instructions) - PPU currently fires NMI straight from Console.Step, see its doc comment ppu, background -- [ ] registers $2000-$2007 and v/t/x/w latch logic -- [ ] nametables with mirroring, pattern tables, palettes, buffered $2007 reads -- [ ] 341 dots x 262 lines timing, 3 dots per CPU cycle -- [ ] vblank flag and NMI +- [x] registers $2000-$2007 and v/t/x/w latch logic +- [x] nametables with mirroring, palettes, buffered $2007 reads (pattern tables go through the mapper already) +- [x] 341 dots x 262 lines timing, 3 dots per CPU cycle, odd-frame skip dot +- [x] vblank flag and edge-triggered NMI, including the $2002 set-dot race window (see ppu/registers.go's readStatus) +- [ ] background shift-register pixel pipeline, PPUMASK clipping - [ ] 256x240 framebuffer and RGB palette frontend and input -- cgit v1.2.3