A—Connector Pinouts, LEDs, Switches
Paddle Boards
A-25
Themis Computer
19
NC
53
NC
20
SENSE
a
54
GND
21
GND
55
ATN
22
GND
56
GND
23
GND
57
BUSY
24
GND
58
ACK
25
GND
59
RESET
26
GND
60
MSG
27
GND
61
SEL
28
GND
62
CD
29
GND
63
REQ
30
GND
64
IO
31
GND
65
DAT8
32
GND
66
DAT9
33
GND
67
DAT10
34
GND
68
DAT11
a—This is part of the automatic SCSI termination sensing logic. The SCSI P2 signal will be forced to ground by
the mating SCSI connector when attached, thus disabling the on-board terminator (see
Figure 1-2
, page 1-6).
Table A-16.
Paddle Board SCSI Port A Connector Pinouts (Continued)
Pin
Signal Name
Pin
Signal Name
Table A-17.
Paddle Board Serial Port B Connector Pinouts
Pin
Signal Name
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
RI
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