Epson 836XL - Manual (Page 108)

Specifications Page 108
SCSI pin
assignments
Pin No. Signal I/O Description
1-12, 14-25, 35-37,
39, 40, 42 GND — Ground
13 NC — Not used
26-33 DB0-DB7 I/O Data bus 0-7
34 DBP I/O Data bus parity
38 TERMPWR — Terminator power
41 ATN I Attention
43 BSY I/O Busy
44 ACK I Acknowledge
45 RST I Reset
46 MSG O Message
47 SEL I/O Select
48 C/D O Command/data
49 REQ O Request
50 I/O O Input/output