Themis USPIIi-1v, Hardware Manual

Page: 75 / 128

Themis Computer
A-7
A. Connector Pinouts, LEDs, Switches
21 GND 55 ATN
22 GND 56 GND
23 GND 57 BSY
24 GND 58 ACK
25 GND 59 RST
26 GND 60 MSG
27 GND 61 SEL
28 GND 62 CD
29 GND 63 REQ
30 GND 64 IO
31 GND 65 DAT<8>
32 GND 66 DAT<9>
33 GND 67 DAT<10>
34 GND 68 DAT<11>
a. This is part of the Automatic SCSI termination logic: The SCSI FP signal will be forced to ground by the mating SCSI connector when
attached. This will disable the active onboard SCSI terminator on the front side.
Table A-4. Baseboard SCSI A and B Pinout (Continued)
Pin Signal Name Pin Signal Name