Int 16/AH=21h

KEYBOARD - CHECK FOR 122-KEY KEYSTROKE (122-key kbd support only)

AH = 21h

Return:
ZF set if no keystroke available ZF clear if keystroke available AH = BIOS scan code AL = ASCII character

Notes: Use AH=09h to determine whether this function is supported. Some versions of the IBM BIOS Technical Reference erroneously report that CF is returned instead of ZF. K3PLUS v6.00+ supports this function as an alias of AH=11h

See Also: AH=01h - AH=09h - AH=11h - AH=20h - Category: Bios - Int 16h - K

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