Dragon Quest III:RAM map

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Main

Category Address Size Description
Joypad $7e7ff8 word Joypad Buttons - registers $4218 and $4219 are read and stored here

VBLANK State Machine

The whole graphics state is set every VBLANK interrupt. This is also where VRAM DMA transfers are scheduled.

Category Address Size Description
Graphics Settings $7e7f8a byte $2101 - OAM object size and object base
Graphics Settings $7e7f8c byte $2105 - BG mode and BG character size
Graphics Settings $7e7f8e byte $2106 - Mosaic size and mosaic enable
Graphics Settings $7e7f90 byte $2107 - BG 1 screen base and screen size
Graphics Settings $7e7f92 byte $2108 - BG 2 screen base and screen size
Graphics Settings $7e7f94 byte $2109 - BG 3 screen base and screen size
Graphics Settings $7e7f96 byte $210a - BG 4 screen base and screen size
Graphics Settings $7e7f98 byte $210b - BG 1 & 2 tile base addresses
Graphics Settings $7e7f9a byte $210c - BG 3 & 4 tile base addresses
Graphics Settings $7e7fba byte $2123 - Window mask setting, BG 1 & 2
Graphics Settings $7e7fbc byte $2124 - Window mask setting, BG 3 & 4
Graphics Settings $7e7fbe byte $2125 - Window mask setting, OBJ
Graphics Settings $7e7fc0 byte $2126 - Window 1 left position
Graphics Settings $7e7fc1 byte $2127 - Window 1 right position
Graphics Settings $7e7fc2 byte $2128 - Window 2 left position
Graphics Settings $7e7fc3 byte $2129 - Window 2 right position
Graphics Settings $7e7fc4 byte $212a - Window 1/2 mask logic, BG 1-4
Graphics Settings $7e7fc6 byte $212b - Window 1/2 mask logic, MATH and OBJ
Graphics Settings $7e7fc8 byte $212c - Main screen designation
Graphics Settings $7e7fca byte $212d - Sub screen designation
Graphics Settings $7e7fcc byte $212e - Window area main screen disable
Graphics Settings $7e7fce byte $212f - Window area sub screen disable
Graphics Settings $7e7fd0 byte $2130 - Color math control A
Graphics Settings $7e7fd2 byte $2131 - Color math control B
Graphics Settings $7e7fd4 word $2132 - Color math sub screen backdrop color, RGB intensities stored as 0bbbbbgggggrrrrr
Graphics Settings $7e7fda byte $2133 - Screen mode/video select
Graphics Loading $7e8bae - $7e8dad $100 words $4302 - DMA source addresses
Graphics Loading $7e8dae - $7e8fad $100 words but only uses low byte $4304 - DMA source address banks
Graphics Loading $7e8fae - $7e91ad $100 words $2116 - VRAM destination addresses
Graphics Loading $7e91ae - $7e93ad $100 words $4305 - DMA transfer sizes
Graphics Loading $7e93ae byte Number of DMA transfers to perform (indexes the preceding arrays)
Graphics Loading $7faeea - $7fb0e9 $100 words Tile indexes, which tiles to copy, used to fill the DMA copy scheduler data in $7e8bae - $7e93ae


Internal Data for Dragon Quest III

ROM MapRAM MapText TableNotesTutorials