PC Connectors
Floppydrive
ISA Bus
Keyboard
Power
Printer
RS 232
Video
2
4
6
8 Index
10 Mot En A
12 Drv Sel B
14 Drv Sel A
16 Mot En B
18 Direction
20 Step Pulse
22 Write Data
24 Write Enable
26 Track 0
28 Write Protect
30 Read Data
32 Select Head 1
34
----
B01 GND |[]| A01 -I/O CH CK
B02 RESET DRV |[]| A02 D7
B03 +5 V |[]| A03 D6
B04 IRQ 2 |[]| A04 D5
B05 -5V |[]| A05 D4
B06 DRQ 2 |[]| A06 D3
B07 -12 V |[]| A07 D2
B08 reserved |[]| A08 D1
B09 +12 V |[]| A09 D0
B10 GND |[]| A10 -I/O CH RDY
B11 -MEMW |[]| A11 AEN
B12 -MEMR |[]| A12 A19
B13 IOW |[]| A13 A18
B14 IOR |[]| A14 A17
B15 -DACK 3 |[]| A15 A16
B16 DRQ 3 |[]| A16 A15
B17 -DACK 1 |[]| A17 A14
B18 DRQ 1 |[]| A18 A13
B19 -DACK 0 |[]| A19 A12
B20 CLK |[]| A20 A11
B21 IRQ 7 |[]| A21 A10
B22 IRQ 6 |[]| A22 A9
B23 IRQ 5 |[]| A23 A8
B24 IRQ 4 |[]| A24 A7
B25 IRQ 3 |[]| A25 A6
B26 -DACK 2 |[]| A26 A5
B27 T/C |[]| A27 A4
B28 ALE |[]| A28 A3
B29 +5 V |[]| A29 A2
B30 OSC |[]| A30 A1
B31 GND |[]| A31 A0
----
D01 MEM CS 16 |[]| C01 -SBHE
D02 IO CS 16 |[]| C02 A23
D03 1RQ 10 |[]| C03 A22
D04 IRQ 11 |[]| C04 A21
D05 IRQ 12 |[]| C05 A20
D06 IRQ 15 |[]| C06 A19
D07 IRQ 14 |[]| C07 A18
D08 -DACK 0 |[]| C08 A17
D09 DRQ 0 |[]| C09 -MEMR
D10 -DACK 5 |[]| C10 -MEMW
D11 DRQ 5 |[]| C11 D8
D12 -DACK 6 |[]| C12 D9
D13 DRQ 6 |[]| C13 D10
D14 -DACK 7 |[]| C14 D11
D15 DRQ 7 |[]| C15 D12
D16 +5 V |[]| C16 D13
D17 -MASTER |[]| C17 D14
D18 GND |[]| C18 D15
----
1 CLK
2 DATA
3 -RESET
4 GND
5 +5 V
1 PG
2 nc
3 +12 V
4 -12 V
5 GND
6 GND
7 GND
8 GND
9 -5 V
10 +5 V
11 +5 V
12 +5 V
1
3 2 1 0 9 8 7 6 5 4 3 2 1
---------------------------------
\ o o o o o o o o o o o o o /
\ o o o o o o o o o o o o /
-----------------------
2
5 4 3 2 1 0 9 8 7 6 5 4
DB25 Female
1 -STROBE
2 D0
3 D1
4 D2
5 D3
6 D4
7 D5
8 D6
9 D7
10 -ACK
11 BUSY
12 P. END
13 SELECT
14 -AUTOFEED
15 -ERROR
16 -INIT PRINTER
17 -SELECT INPUT
18-25 GND
1 2 3 4 5
-----------------
\ * * * * * /
\ * * * * /
-------
6 7 8 9
DB9 Male
1 DCD Data Carrier Detect
2 RXD Received Data
3 TXD Transmitted Data
4 DTR Data Terminal Ready
5 GND GrouND
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear To Send
9 RI Ring Indicator
1
1 2 3 4 5 6 7 8 9 0 1 2 3
---------------------------------
\ * * * * * * * * * * * * * /
\ * * * * * * * * * * * * /
-----------------------
2
4 5 6 7 8 9 0 1 2 3 4 5
DB25 Male
1 nc
2 TXD Transmitted Data
3 RXD Received Data
4 RTS Request To Send
5 CTS Clear To Send
6 DSR Data Set Ready
7 GND GrouND
8 DCD Data Carrier Detect
9 TEST
10 TEST
11 STF Select Transmit Frequency
12 SDCD Secondary DCD
13 SCTS Secondary CTS
14 STXD Secondary TXD
15 TXC DCE TX Clock
16 SRXD Secondary RXD
17 RXC RX Clock
18 nc
19 SRTS Secondary RTS
20 DTR Data Terminal Ready
21 SQ Signal Quality
22 RI Ring Indicator
23 CH/CI rate select
24 XTC DTE TX Clock
25 nc
Pin 1 used to be 'protective ground'. but is now obsolete;
The shield is connected to the connector shell at both ends of the cable.
Hercules
5 4 3 2 1
-----------------
\ o o o o o /
\ o o o o /
-------
9 8 7 6
DB9 Female
1 GND
2 GND
3 R
4 G
5 B
6 I
7 MONO
8 HSYNC
9 -VSYNC
2 1
0 8 6 4 2 0 8 6 4 2
+----------------------+
\ | | | | | | | | | | |
| | | | | | | | | | ||
+--------------------+
2 1
1 9 7 5 3 1 9 7 5 3 1
1 Right out
3 Left out
5 B Gnd
7 B
9 G Gnd
11 G
13 R Gnd
15 R
17 Sync / Video Gnd
19 Sync / Video out
21 Screen
2 Right in
4 Audio Gnd
6 Left in
8 Source select (High = Video, Low = RF)
10 Reserved
12 Reserved
14 Reserved
16 Insert (High = RGB, Low = Video)
18 Insert Gnd
20 Sync / Video in
1 R
2 G
3 B
4 MID 2
5 GND
6 R ret
7 G ret
8 B ret
9 key
10 SYNC ret
11 MID 0
12 MID 1
13 HSYNC
14 VSYNC
15 reserved