Philips CD-I - Page 97

1.7 . 2 Connector of SCSI interface
Shielded 50 pin amphenol
(2.54 mm pitch, female type)
1) Device
NCR5380
2) Data transfer mode
DMA transfer
- channel
- address mode
channel 1 of
HD68450
- external request mode
single address
cycle steal
ACK/RDY device
Byte
- device type
- operand size
3) Internal register of NCR5380
Address
R/W Register
410000
R current SCSI data.
410000 w output data
410002
R/W initiator command
410004 R/W mode
410006
R/W target command
410008
R current SCSI bus
status
410008 w select enable
41000A R bus and status
41000A w start DMA send
41000C R input data
41000C w
start DMA target receive
41000E R reset parity/interrupt
41000E w
start DMA initiator
receive
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