J18: PRINT
Pin #
Signal Name Pin # Signal Name
1
STB-
2
PD0
3
PD1
4
PD2
5
PD3
6
PD4
7
PD5
8
PD6
9
PD7
10
ACK-
11
BUSY
12
PE
13
SLCT
J19: COM4 (Optional: TTL)
Pin #
Signal Name Pin # Signal Name
1
DCD4
3
TXD4
5
GND
7
RTS4
9
RI4
VDX-6357RD
14
AFD-
15
ERR-
16
INIT-
17
SLIN-
18
GND
19
GND
20
GND
21
GND
22
GND
23
GND
24
GND
25
GND
26
NC
2
RXD4
4
DTR4
6
DSR4
8
CTS4
10
NC
Vortex86DX™ PC/104 CPU Module
15