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Título: Add a bit of MSX2 functionality to your MSX1 games Publicado por: BiFiMSX en 26 de Diciembre de 2005, 11:22:23 am Here a piece of code you can use to change palette when running your MSX1 game on an MSX2:
Código: ld a,($2d) ; read MSX version or a ; is it MSX1? ret z ; then there's no need to use it anyway ld a,(7) ; get first VDP write port ld c,a inc c ; prepare to write register data di ; interrupts could screw things up xor a ; from color 0 out (c),a ld a,128+16 ; write R#16 out (c),a ei inc c ; prepare to write palette data ld b,32 ; 16 color * 2 bytes for palette data ld hl,palette otir ret ; ; the format of the palette is like $GRB ; and R, G and B must be between 0-7 ; currently it's the default MSX2 palette ; but you set up your own in these dw's ; palette: dw $000,$000,$611,$733,$117,$327,$151,$627 dw $171,$373,$661,$664,$411,$265,$555,$777 |