Category: <b>vendor-specific BIOS extensions</b>
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<pre><b>INT 4A - TI Professional PC - KEYBOARD - GET KEYBOARD STATUS</b>

	AH = 01h
Return: ZF set if no keystroke available
	ZF clear if keystrokes in buffer
	    AX = next keystroke (AH=00h for ASCII keys -- no scan code)
SeeAlso: AH=00h,AH=02h,AH=03h,AH=04h,AH=05h,INT 16/AH=01h
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