A.5 < parallel port, A.6 <serial port, A.6.1 <external db9 serial port – Intel FS-979 User Manual
Page 47: A.6.2 <internal serial port

FS-979 User’s Manual I/O Port Pin Assignment
Parallel Port
47
A.5 < Parallel Port>
2
26
Connector: CN_LPT
Type: 26-pin (2 x 13) 2.54-pitch box header
1
25
Pin
Description
Pin
Description
1 STROBE-
14
AUTO
FEED-
2 D0
15
ERROR-
3 D1
16
INITIALIZE-
4 D2
17
SELECT
INPUT-
5 D3
18
Ground
6 D4
19
Ground
7 D5
20
Ground
8 D6
21
Ground
9 D7
22
Ground
10 ACKNOWLEDGE- 23 Ground
11 BUSY
24 Ground
12 PAPER
EMPTY
25 Ground
13 SELECT+
26 N/C
A.6 <Serial Port>
1
2
3
4
5
6
7
8
9
A.6.1 <External DB9 serial port>
Connector: COM1 (VDL only)
Type: 9-pin D-sub male connector on bracket
Pin
Description
Pin
Description
1 DCD
6 DSR
2 SIN
7 RTS
3 SO
8 CTS
4 DTR
9 RI
5 Ground
2
10
A.6.2 <Internal serial port>
Connector: CN_COM1 (VDG3 only); CN_COM2
1
9
Type: 10-pin (2 x 5) 2.54-pitch header
Pin
Description
Pin
Description
1 DCD
2 SIN
3 SO
4 DTR
5 Ground
6 DSR
7 RTS
8 CTS
9 RI
10
N/C