MEM 0040h:0069h	- CASSETTE (PCIBM PC only) - CASSETTE CRC REGISTER
Size:	WORD
SeeAlso: MEM 0040h:006Bh"CASSETTE",INT 15/AH=02h
                                                                                

MEM 0040h:0069h - V20-XT-BIOS - KEY REPEAT                                      
Size:	BYTE


Bitfields for V20-XT-BIOS key repeat flags:
Bit(s)	Description	(Table M0020)
 7	key repeat disabled
 6	Ctrl-Alt pressed instead of just Alt