Repository Issue Activity (beta)

#820 Mapper 2 Game Graphics Corruption

#771 Super Mario Bros. 3 and Kirby's Adventure sprite layer error and Audio issue

#751 Tetris (NES) compatibility issues? (disappearing graphics)

#732 MMC1 (mapper 1): SUROM 512KB games crash — fixed bank at $C000 doesn’t follow the 256KB page-select bit

#80 Write tests that check output against screenshot

#453 Example Code for Django & Vanilla JS?

#667 This doesnt work:

#594 MMC3: register address decoding uses exact addresses instead of masking

#608 APU: square channel sweep unit has wrong negate formula and muting threshold

#614 State serialization gaps: CPU dataBus, controller state not saved

#613 Speakers.getSampleRate() wastefully creates/destroys AudioContext

#615 NES.reset() creates new CPU/PPU/PAPU objects, breaking external references

#647 Fix sprite corruption in Castlevania III intro

#605 PPU: color emphasis bits are rotated (wrong colors)

#597 Minor mapper bugs: Mapper 180 initial bank, CNROM duplicate load, dead battery RAM code

#611 package.json: main points to ESM source, deprecated prepublish, missing files

#606 PPU: grayscale mode mask is wrong (& 32 should be & 0x30)

#601 CPU: NMI handler doesn't set I flag

#612 KeyboardController.handleKeyPress prevents ALL keyboard input on the page

#616 GameGenie.addCode() doesn't validate decode() result

#592 ROM loader: trainer offset not applied

#617 Test coverage gaps: PPU, APU, controllers, mappers, browser, state serialization

#610 TypeScript type definitions are incorrect

#609 APU: various channel bugs (sequencer reset, length counter gating, timer stepping, noise LFSR)

#607 PPU: minor rendering issues (odd-frame skip, monochrome bg, sprite 0 left-column)