/SEL0	= 
	+ DSB
	+ /MOTOR

/SEL1	= 
	+ /DSB
	+ /MOTOR

/READY	= 
	+ /INDISK
	+ /MOTOR

/CE	= A13 * /A14 * /A15 * /MREQ * R0 * R1 * /R2 * /RELCPMH

; SEL0	=   /DSB AND MOTOR = DSA AND MOTOR
; SEL1	=    DSB AND MOTOR
; READY	= INDISK AND MOTOR
; /CE low if RELCMPH low, MREQ low, ROM page 3, address 2000-3FFFH