RBIL61 - MEM 0040h:0076h - FIXED DISK - CONTROL BYTE {IBM documented only for XT}

MEM 0040h:0076h - FIXED DISK - CONTROL BYTE    {IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. documented only for XTIBM PC XT}
Size:	BYTE
Desc:	loaded from the disk parameter table control byte (offset 8) during
	  various hard disk operations
SeeAlso: MEM 0040h:0075h"FIXED DISK",MEM 0040h:0077h"FIXED DISK"