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 = 10h INT 18h Returns: AL = ASCII, AH = scancode pc-98 bios

AH = 11h INT 18h ZF = 1 if no key ZF = 0 if key waiting → AX = scancode/ASCII MOV AX, 0xA000 MOV ES, AX MOV DI,