AH = 40h DL = drive (0=A, 1=B, etc.) INT 18h Returns: CF = 0 if OK
AH = 29h Returns: AL = current mode Reset disk system
MOV AX, 0xA000 MOV ES, AX MOV DI, 0 ; row 0, col 0 (character cell) MOV AL, 'A' MOV ES:[DI], AL But VRAM is planar: you must handle 4 planes for graphics. Prints "Hello" using BIOS INT 18h AH=24h:
AH = 40h DL = drive (0=A, 1=B, etc.) INT 18h Returns: CF = 0 if OK
AH = 29h Returns: AL = current mode Reset disk system pc-98 bios
MOV AX, 0xA000 MOV ES, AX MOV DI, 0 ; row 0, col 0 (character cell) MOV AL, 'A' MOV ES:[DI], AL But VRAM is planar: you must handle 4 planes for graphics. Prints "Hello" using BIOS INT 18h AH=24h: AH = 40h DL = drive (0=A, 1=B, etc