Mercurial > repos > blastem
view sf2_vram_map.txt @ 478:2e4a4188cfb0
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
author | Mike Pavone <pavone@retrodev.com> |
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date | Tue, 17 Sep 2013 00:11:45 -0700 |
parents | b231162c8fdd |
children |
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0000: single color blocks 0200: Random symbols???? 0400-0C00: Font 0C00-0E??: Score font 0E??: Player name displays 2000-3000: floor (mostly, some garbage around 2800 and 2A00) 3000-6C00: background 6C00-8000: not graphics 8000-~8A00: bat/bird sprites, special attack text 8A00-9000: ????? 9000-9200: More special attack text 9200-9600: another font 9800-AA00: special attack effects? AC00-B000: ???? B000-B500: character sprite ???? C000-C500: chracter sprite D000-DA00: window name table DA00-DC00: Sprite attribute table DC00-E000: horizontal scroll data E000-????: plane A&B name table C500-FFFF: not graphics VDP Registers: Mode 00 - 14 01 - 64 Scroll A Name Table Address: E000 02 - 38 Window Name Table Address: D000 03 - 34 Scroll B Name Table Address: E000 04 - 07 Sprite Attribute Table Address: DA00 05 - 6D 06 - 00 Backdrop color - 0 07 - 00 08 - 00 09 - 00 HINT Counter 0A - AF Mode - Full screen vertical scroll, line horizontal scroll, external ints disabled, 32 cell display, no interlacing 0B - 03 0C - 00 H Scroll Data Address: DC00 0D - 37 0E - 00 Auto increment 0F - 02 Scroll Size 10 - 11 Window H Pos 11 - 00 Window V Pos 12 - 05 DMA transfer length 13 - 00 14 - 00 DMA source address and mode 15 - DB 16 - CF 17 - 7F