Z53C80 Datasheet, PDF (21/40 Pages) Zilog, Inc. – SMALL COMPUTER SYSTEM INTERFACE (SCSI)

ZILOG
Address: 2
(Write Only)
D7 D6 D5 D4 D3 D2 D1 D0
Arbitrate
DMA Mode
Monitor /BSY
Enable /EOP Interrupt
Enable Parity Interrupt
Enable Parity Checking
Target Mode
"0"
Figure 37. Mode Register
Address: 3
(Write Only)
D7 D6 D5 D4 D3 D2 D1 D0
Assert I//O
Assert C//D
Assert /MSG
Assert /REQ
"X"
Last Byte Sent
Figure 38. Target Command Register
Address: 4
(Write Only)
D7 D6 D5 D4 D3 D2 D1 D0
/DB0
/DB1
/DB2
/DB3
/DB4
/DB5
/DB6
/DB7
Figure 39. Select Enable Register
Address: 5
(Write Only)
D7 D6 D5 D4 D3 D2 D1 D0
"X"
Z53C80 SCSI
Figure 40. Start DMA Send
Address: 6
(Write Only)
D7 D6 D5 D4 D3 D2 D1 D0
"X"
Figure 41. Start DMA Target Receive
Address: 7
(Write Only)
D7 D6 D5 D4 D3 D2 D1 D0
"X"
Figure 42. Start DMA Initiator Receive
PS97SCC0200
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