Mappings are written into the exported 6502 program. Duplicate button assignments are allowed intentionally.
Controller 2 assignment
Set an action to DISABLED to remove its button trigger from exported ROMs.
FLASH / SEIZURE MODE ENGINE
PHOTOSENSITIVITY WARNING: high write counts and low delays can produce rapid full-screen color changes. The MAXIMUM DAMAGE preset is intentionally aggressive.
ROM: 16-byte header + 32 KB PRG + 32 KB CHR Mapper: MMC1 / mapper 1 Scene data: 8 × (1024 B NAM + 16 B PAL) CHR: 8 × 4 KB performance banks
Selecting a scene auto-saves the previous scene's NAM/PAL, loads the new scene into the main editor, and jumps to its matching 4 KB CHR page. CHR edits are global across the cartridge. Controller/flash settings patch compatible glitchNES executables during ROM export.
CHR Pattern Table4 KB
NAM indices are 00–FF; page selects which 4 KB pattern table you preview/edit.
tile $00 · global #0 · used 960×
Tile Editor$00
Paint pixel values 0–3. Shift+click samples a pixel.
Nametable · 32×30 tiles · 256×240 px1024 B
x 00 · y 00 · NAM +$000 · tile $00 · attr +$3C0 · palette 0
Project Fileslocal browser state autosaves
CHR DOWNLOAD NAME
NAM DOWNLOAD NAME
PAL DOWNLOAD NAME
PNG DOWNLOAD NAME
Background Palettes16 B
Select a slot, then choose an NES color below. Pixel 0 is the background color on hardware; palette files are preserved as 16 raw indices.