Bitfields for Card Services Configuration DMA attributes:
Bit(s)	Description	)
 1-0	sharing mode
	00 no sharing
	01 time-multiplex sharing
	10 dynamic sharing
	11 reserved
 3-2	DMA request signal
	00 reserved
	01 DMARQ uses pin SPKR#
	10 DMARQ uses pin IOIS16#
	11 DMARQ uses pin INPACK#
 4	DMA size
	0 eight bits
	1 sixteen bits
 7-5	reserved (0)
SeeAlso: #00704,#00708,#00709