Please email me any pinouts you have.
This goes back to my homepage.
The comp.sys.ibm.pc.hardware.* FAQ, which can be found on rtfm.mit.edu, supplied the majority of these pinouts. The rest are from people who emailed pinouts to me. I failed to keep track of who to give credit to though (Sorry about that...)
9 pin rs-232
Connector: D9 1 CD carrier detect 2 RD receive data 3 TD transmit data 4 DTR data terminal ready 5 GND 6 DSR data set ready 7 RTS request to send 8 CTS clear to send 9 RI ring indicator 25 pin rs-232
Connector: D25 1 PG protective ground 2 TD transmit data 3 RD receive data 4 RTS request to send 5 CTS clear to send 6 DSR data set ready 8 CD carrier detect 7 GND signal ground 20 DTR data terminal ready 22 RI ring indicator DEC's Dual RS-232
(found on the "Multia" or "UDB", puts two ports on one connector) Connector: D25 Port 1: 2 TD 3 RD 4 RTS 5 CTS 6 DSR 7 GND 8 DCD 20 DTR 22 RI Port 2: 11 DTR 12 DCD 13 CTS 14 TD 16 RD 19 RTS 23 DSR 25 RI Sun dual RS-232
(found on Sparcstation, SLC, ELC, etc.) Connector: D25 port 1: 2 TD 3 RD 4 RTS 5 CTS 6 DSR 7 GND (shared between both ports) 8 DCD 15 TD clock in? 17 RD clock in 20 DTR 24 TD clock out port 2: (not all signals are present) 12 DCD 13 CTS 14 TD 16 RD 19 RTS a SLC/ELS has the additional connections: 11 port 2 DTR 18 port 2 TD clock in 25 port 2 TD clock out Console on a DEC VAXstation 3100 or DECstation 3100:
Connector: mmj Corresponding 25 pin RS-232 pins 1 DTR 20 2 TD (+) 2 3 TD (-) 7 4 RD (-) 7 5 RD (+) 3 6 DSR 6 This isn't RS-232, its a differential interface (hence the + and - pins) (RS-422?). Packard-Bell modem connector (J21) Connector:20 pin header 1 DCD 2 GND 3 RXD 4 N/C 5 TXD 6 N/C 7 DTR 8 GND 9 DSR 10 GND 11 N/C 12 N/C 13 CTS 14 N/C 15 RI 16 N/C 17 RESET 18 +12 VDC 19 N/C 20 GND TTL port on a MFJ 1270C/1276 TNC2 packet radio TNC Connector: 10 pin single row header (1 is closest to RS-232) 1 RD 2 DCD 3 GND 4 RTS 5 TD 6 DSR 7 CTS Mapping to Comodore Vic-20, 64 or, 128 user port: 1 B,C 2 H 3 N 4 E 5 M 6 L 7 K mac serial port: (printer end) Connector: mini-circular-square-din-type connector U 8 7 6 5 4 3 2 1 1 handshake out (DTR?) 2 handshake in (RTS?) 3 TD- 4 GND 5 RD- 6 TD+ 7 GPinput (NC on Mac plus and earlier) 8 RD+ This is an RS-422 interface not RS-232, hence the paired IO pins (+ and -). To connect to an RS-232 device: attach the - pins to the RS-232 data pins, and RD+ to ground. The handshake in and out are the hardware flow control, GPinput is carrier detect. Cyclades Corp 8 port serial board Connector: RJ-12 (like an RJ45 but 6 pins) Model 8Ys New Card (version 4.x and later) 1 DTR 2 TD 3 GND 4 CTS 5 RD 6 DCD Old Card (prior to version 4.x) 1 TD 2 RD 3 DTR 4 CTS 5 GND 6 DCD Model 8Yo, 8Zo DB-25 Octopus cable uses the standard RS-232 DB-25 pinout. 10 pin RJ-45-like connector: 1 protective GND 2 RTS 3 DTR 4 TD 5 GND 6 CTS 7 RD 8 DCD 9 DSR 10 RI Toshiba PBX Preception 2 Telephone Switch Connector: DB-25 (pretty much a standard RS-232) 1 NC 2 TD 3 RD 4 RTS 5 CTS 6 DSR 7 Signal GND 8 NC 20 NC 22 NC IBM-compatable parallel printer port, 25 pin version:
Connector: D25 1 -strobe 2-9 D0-7 10 -Ack 11 Busy 12 PE 13 Select 14 -Auto Feed XT 15 -Error 16 -Init 17 -Select in 18-25 GND (mostly shielding) AUI socket for ethernet:
Connector:D15 1 ? 2 Collision + 3 TD+ 4 RD shield 5 RD+ 6 GND 7 VCC (?) 9 Collision - 10 TD- 11 TD shield 12 RD- 13 +12VDC 14 +12VDC ground 15 ? ten base T ethernet:
Connector:rj45 1. tx+ 2. tx- 3. rx+ 6. rx- for a crossover cable: tx+ to rx+ tx- to rx- rx+ to tx+ rx- to tx- Signal connector on Minuteman UPS's:
Connector:D9 1. Unused 2. Battery power 3. Unused 4. Common (same as 7) 5. Low battery 6. rs-232 level shutdown 7. Common (same as 4) 8. Ground level shutdown (A500 and above, reserved on < A500) 9. Reserved Pins 2 and 5 are connected to Common when they are true. On pin 6, an rs-232 high level (>9V) will shutdown, when running off the battery. On pin 8, shorting to ground will shutdown. Signal connector on a Triplitte OmniPro 675 UPS:
Connector: unknown (the donator didn't say...) 1. Common/Negative 2. External inverter shutdown, positive side 3. line fail, normaly open contact 4. return/external inverter shutdown negative side 5. line fail, normaly closed contact 6. low battery, positive side (2 minute warning) MIDI out or through Connector: 5 pin DIN 1. Reserved 2. Ground (shield of twisted pair) 3. Reserved 4. +5v 5. Data (pins 4 and 5 in twisted pair) MIDI in Connector: 5 pin DIN 1. Reserved 2. Ground (shield of twisted pair) 3. Reserved 4. RD+ 5. RD- (pins 4 and 5 in twisted pair) (I am fairly sure this is correct) Serial port on a Kawai X series or Yamaha TG, CB, or MU series synthesizer Connector: 8 pin micro DIN (like a PS2 keyboard?) 1. CTS clear to send 2. RTS request to send 3. RD receive data 4. GND 5. TD transmit data 6. not connected 7. not connected 8. not connected RS-422 Connector: DB-9 1 Sig Gnd 2 RTS+ 3 RTS- 4 TXD+ 5 TXD- 6 CTS- 7 CTS+ 8 RXD+ 9 RXD- EIA RS-485 RS-485 resembles RS-422 except that associated drivers are tri-state, not dual state. It may be used in multipoint applications where one computer controls many different devices. Up to 64 devices may be interconnected with RS-485 EIA RS-449 1 Shield 20 Receive Gommon 2 Signaling Rate Indicator 21 4 Send Data 22 Send Data S SendTiming 23 Send Timing 6 Receive Data 24 Receive Data 7 Request to Send 25 Request to Send 8 Receive Timing 26 Receive Timinq 9 Clear to Send 27 Clear to Send 10 Local loopback 28 Terminal in Service 11 Data Mode 29 Data Mode 12 Temminal Ready 30 Terminal Ready 13 Receiver Ready 31 Receiver Reader 14 Remote loopback 32 SeleetStandby 15 Intoming Call 33 SignalQuality 16 Select Frequency 34 New Signal 17 Terminal Timing 35 Terminal Timing 18 Test Mode 36 Standby/Indicator 19 Signal Ground 37 Send Common RS-449 defines functional/mechanical interfaces for DTEs/DCEs that employ serial binary data interchange, and is usually used with synchronous transmissions. It identifies signals (TD, RD, etc.) that correspond with the pin numbers for a balanced interface on OB37 and DB9 connectors. RS 449 was originally intended to replace RS-232G, but RS-232 and RS-449 are completely incompatible in mechanical and electrical specifications. EIA RS-530 1 Shield(A) 2 Transmitted Data(A) 3 Received Data (A) 4 Request to Send (A) 5 Clear to Send (A) 6 DCE Ready (A) 7 Signal Ground 8 Received line Signal Detector (A) 9 Receiver Signal Element Timing - DCE (B) 10 Received line Signal Detector (B) 11 Transmitter Signal Element Timin DTE (B) 12 Transmitter Signal Element Timing DCE (B) 13 Cear to Send (B) 14 Transmitted Dota (B) 15 Transmitted Signal Element DCE (A) 16 Received Data (B) 17 Receiver Signal Element Timing DLE (A) 18 Local Loopback 19 Request to Send 20 DTE Ready (A) 21 Remote loopbork 22 DCE Ready (B) 23 DTE Ready (B) 24 Tronsmitter Signal Element Timing DTE (A) 25 Test Mode RS-530 supersedes RS-449 and complements RS-232. Based on a 25 pin connection, it works in conjunction with either electrical interface RS-422 (balanced electrical circuits) or RS-423 (unbalanced electrical circuits). RS-530 defines the mechanical/electrical interfaces between DTEs and DCEs that transmit serial binary data, whether synchronous or asynchronous. RS-530 provides a means for taking advantage of higher data rates with the same mechanical connector used for RS-232. However, RS-530 and RS-232 are not compatible! RS-530 accommodates data transmission rates from 20 Kbps to 2 Mbps; maximum distance depends on which electrical interface is used. RS-530 is compatible with these standards: ITU V.10, V.11, X26; MIL-188/114; RS-449. Oliver Engineering paper tape reader, OAE model OP-80A Connector: 16 pin DPI 1 D0 (output) 2 D2 3 D4 4 D6 5 Ack (or Ack/, jumper selectable, input) 6 RDA/ (Latched sproket pulse, output) 7 RDA (output, inverse of pin 6) 8 Ground 9 +5V power 10 S1 (drive to LED S1, input) 11 S2 (ditto) 12 N/C 13 D7 14 D5 15 D3 16 D1
ps2 keyboard connector
Connector:PS2 1 data 2 reserved 3 GND 4 +5V 5 clock 6 reserved Also used for PS2 mice, they are interchangable except for the data format. ps2 keyboard Y adapter for Gateways: male keyboard mouse 1 2 - 2 - 2 3 3 3 4 4 4 5 6 - 6 - 6 ps2 keyboard Y adapter for Thinkpads: male kbd mouse 1 2 - 2 - 1,2 3 3 3 4 4 4 5 6 5 6 - 6 PC/XT keyboard connector
Connector: 5 pin DIN 1 clock 2 data 3 reset 4 GND 5 +5V AT keyboard connector
Connector: 5 pin DIN 1 clock 2 data 3 NC 4 GND 5 +5V AT&T 6300 keyboard connector
Connector:D9 1 data 2 clock 3 gnd 4 gnd 5 +12V 6-9 nothing Sun type 3 keyboard connector
Connector: D15 1 keyboard RD 2 GND 3 keyboard TD 4 GND 5 mouse RD 6 GND 7 mouse TD 8 GND 9 GND 10-12 VCC +5VDC 13 NC 14-15 VCC +5VDC Sun type 4 keyboard connector
Connector: Mini-DIN 1 GND 2 GND 3 VCC +5VDC 4 mouse RD 5 keyboard TD 6 keyboard RD 7 mouse TD 8 VCC +5VDC type 3 and type 4 keyboards are compatible, all it takes is a connector adapter. Joystick connector
Connector: D15 1 +5V 2 Button 1 3 Position 0 (X coord) 4 GND 5 GND 6 Position 1 (Y coord) 7 Button 2 8 +5V 9 +5V 10 Button 3 11 Position 2 (X coord) 12 GND 13 Position 3 (Y coord) 14 Button 4 15 +5V on a Gravis ultrasound board: 12 transmit MIDI 13 receive MIDI It requires line drivers SGI mouse interface (model 021-0004-002)
Connector:D9 1. +5V 2. -5V 5. MTXD (data) 9. GND
ISA slot:
[rear panel on this end, looking down into the edge connector]
GND -IO CH CK
Reset DRV D7
+5V D6
IRQ 2 D5
-5V D4
DRQ 2 D3
-12V D2
Reserved D1
+12V D0
GND I/O CH RDY
-MEMW AEN
-MEMR A19
-IOW A18
-IOR A17
-DACK 3 A16
DRQ 3 A15
-DACK 1 A14
DRQ 1 A13
-MREF A12
CLK A11
IRQ 7 A10
IRQ 6 A9
IRQ 5 A8
IRQ 4 A7
IRQ 3 A6
-DACK 2 A5
TC A4
ALE A3
+5V A2
OSC A1
GND A0
--- Gap between 8 and 16 bit parts here ---
-MEM CS16 SBHE
-IO CS 16 A23
IRQ 10 A22
IRQ 11 A21
IRQ 12 A20
IRQ 13 A19
IRQ 14 A18
-DACK 0 A17
DRQ 0 -MEMR
-DACK 5 -MEMW
DRQ 5 D8
-DACK 6 D9
DRQ 6 D10
-DACK 7 D11
DRQ 7 D12
+5V D13
-Master D14
GND D15
30 pin Fast Page Mode SIMM:
Connector: 30 pin SIMM
256kx8 256kx9 1Mx8 1Mx9 4Mx8 4Mx9
pin assignment|pin assignment|pin assignment|pin assignment
1 Vcc |9 Gnd |17 A8 |25 DQ7
2 -CAS |10 DQ2 |18 A9 |26 QP
3 DQ0 |11 A4 |19 A10 |27 -RAS
4 A0 |12 A5 |20 DQ5 |28 -CASP
5 A1 |13 DQ3 |21 -WE |29 DP
6 DQ1 |14 A6 |22 Gnd |30 Vcc
7 A2 |15 A7 |23 DQ6
8 A3 |16 DQ4 |24 N/C
Notes:
QP, CASP and DP are N/C on all x8 bit modules
a9 is a N/C on 256k modules
a10 is a N/C on 256k and 1M modules
72 pin Fast Page Mode SIMM:
Connector: 72 pin SIMM
256k/512k/1M/2M/4M/8M x 32/36 bit
pin assignment|pin assignment|pin assignment|pin assignment
1 Gnd |19 A10 |37 MP1 |55 DQ11
2 DQ0 |20 DQ4 |38 MP3 |56 DQ27
3 DQ16 |21 DQ20 |39 Gnd |57 DQ12
4 DQ1 |22 DQ5 |40 -CAS0 |58 DQ28
5 DQ17 |23 DQ21 |41 -CAS2 |59 Vcc
6 DQ2 |24 DQ6 |42 -CAS3 |60 DQ29
7 DQ18 |25 DQ22 |43 -CAS1 |61 DQ13
8 DQ3 |26 DQ7 |44 -RAS0 |62 DQ30
9 DQ19 |27 DQ23 |45 -RAS1 |63 DQ14
10 Vcc |28 A7 |46 N/C |64 DQ31
11 N/C |29 N/C |47 -WE |65 DQ15
12 A0 |30 Vcc |48 N/C |66 N/C
13 A1 |31 A8 |49 DQ8 |67 PD1
14 A2 |32 A9 |50 DQ24 |68 PD2
15 A3 |33 -RAS3 |51 DQ9 |69 PD3
16 A4 |34 -RAS2 |52 DQ25 |70 PD4
17 A5 |35 MP2 |53 DQ10 |71 N/C
18 A6 |36 MP0 |54 DQ26 |72 Gnd
Notes:
MP0,MP1,MP2,MP3 are N/C on all x32 bit modules
a9 is a N/C on 256k and 512k modules
a10 is a N/C on 256k, 512k, 1M and 4M modules
^^--- This may be 2M, not 4M
RAS1/RAS3 are N/C on 256k, 1M and 4M modules
monitor-sync.ps- schematic of a seperate sync to composite sync on green adapter. I have built a device similar to this one for an IBM 8051 display on a Sun 3/60. It worked for me, but your milage may vary.
VGA video:
Connector:high density D15 1. red 2. green 3. blue 4. reserved 5. reserved 6. red return 7. green return 8. blue return 9. key (no pin) 10. GND 11. monitor sense 0 12. monitor sense 1 13. horizontal sync 14. vertical sync 15. reserved VESA Standard Feature Connector Connector:26 pin header pin assignment pin assignment 1 PB 2 PG 3 PR 4 PI 5 SB 6 SG 7 SR 8 SI 9 Dot Clock 10 Blank 11 HSync 12 VSync 13 GND 14 GND 15 GND 16 GND 17 Ext Video Sel 18 Ext Sync Sel 19 Ext DotClock Sel20 N/C 21 GND 22 GND 23 GND 24 GND 25 N/C 26 N/C CGA video:
Connector:D9 1. GND 2. GND 3. red 4. green 5. blue 6. intensity 7. reserved 8. horizontal sync 9. vertical sync MDA video:
Connector:D9 1. GND 2. GND 3. NC 4. NC 5. NC 6. intensity 7. video 8. horizontal sync 9. vertical sync NEC multisync monitors:
Connector:D9 1. red 2. green 3. blue 4. horizontal sync 5. vertical sync 6. red ground 7. green ground 8. blue ground 9. sync ground 3b1/7300 video:
Connector:12 pin header 1. vertical sync 2. GND 3. horizontal sync 4. GND 5. video 6. GND 7. +12 volts 8. GND 9. +12 volts 10. speaker 11. speaker AT&T PC6300
Connector: D25 1. horizontal sync 2. ID0 (monitor id) 3. vertical sync 4. red 5. green 6. blue 8. nothing 9. nothing 10. ID1 11. Mode0 12. nothing 13. -Degauss 14-21. gnd 22. nothing 23. nothing 24,25. +15V for a monochrome monitor ID0 and ID1 are open for color, ID0 is 0, and ID1 is 1, probably 5V, not 15 AT&T 53D410
Connector: D25 2. vertical sync 3. horizontal sync 5. video 13-15. gnd AT&T 6300 Taxan monitor
Connector: 8 pin Din 1. Special TEXT signal (no explanation as to what that means) 2. Red video signal 3. Green video signal 4. Blue video signal 5. Intensity signal 6. Signal ground 7. Horizontal or Composite sync. 8. Vertical sync. Macintosh video out
Connector:D15 1. GND for red 2. red 3. composite sync 4. Monitor sense 0 5. green 6. GND for green 7. Monitor sense 1 8. no connection 9. blue 10. Monitor sense 2 11. Sync GND 12. Vertical sync 13. GND for blue 14. Horizontal sync GND 15. Horizontal sync Macintosh NTSC video input: 4-pin Pinout: Connector:micro-DIN 1 AGND (signal) 2 AGND (power) 3 Video Y 4 Video C There is also a 7 pin pinout, which uses the same connector, and adds the following additional pins: 5 I^2C clock 6 +12v 7 I^2C data Sun "13W3" is an unusual connector combining a 10-pin D-shell and analog three video conductors: gray/ 1 gnd* red * * green blue 2 vertical sync* | 1o 2o 3o 4o 5o | | 3 sense #2 (O) (O) (O) 4 sense gnd 6o 7o 8o 9o 10o 5 composite sync * * 6 horizontal sync* 7 gnd* * Considered obsolete, may not be 8 sense #1 connected. 9 sense #0 10 composite gnd The codes for the three monitor-sense bits are: 0 ??? 4 1152 x 900 76Hz 19" 1 reserved 5 reserved 2 1280 x 1024 76Hz 6 1152 x 900 76Hz 16-17" 3 1152 x 900 66Hz 7 no monitor connected See http://cvs.anu.edu.au:80/monitorconversion/ and http://rugmd0.chem.rug.nl/~everdij/hitachi.html for info on attaching old workstation monitors to VGA boards. Sun DB-9 video: Connector: D9 1 Video+ 3 Hsync 4 Vsync 6 Video- 7 GND 8 GND 9 GND Video is ECL levels, sync signals are TTL. Atart 1040ST video: Connector: 13 pin DIN Computer is female, display is male. 1 AO Audio Out 2 CVIDEO Composite Video 3 CS Clock Select 4 MD Monochrome Detect / Clock In 5 AI Audio In 6 G Green 7 R Red 8 +12VDC (520ST has GND here) 9 HSYNC Horizontal Sync 10 B Blue 11 MVIDEO Monochrome video 12 VSYNC Vertical Sync 13 GND Ground I don't know what the R,G,B levels are. Probably digital...
MFM floppy connectorWide SCSI
Connector: 34 pin edge connector pin 1 pin 2 GND -High density select reserved reserved GND reserved GND -Index GND -Motor enable 1 GND -Drive select 0 GND -Drive select 1 GND -Motor enable 0 GND -Direction GND -Step GND -Write data GND -Write enable GND -Track 0 GND -Write protect GND -Read data GND -Head 1 select GND -Disk change pin 33 pin 34 IDE drive connector
Connector: 40 pin header IDE Hard Disk Interface IDC-40 Male pin assignment pin assignment 1 -Reset 2 GND 3 Data 7 4 Data 8 5 Data 6 6 Data 9 7 Data 5 8 Data 10 9 Data 4 10 Data 11 11 Data 3 12 Data 12 13 Data 2 14 Data 13 15 Data 1 16 Data 14 17 Data 0 18 Data 15 19 GND 20 Key 21 (reserved) 22 GND 23 -IOW 24 GND 25 -IOR 26 GND 27 IO Chrdy 28 Ale 29 (reserved) 30 GND 31 IRQ14 32 -IOCS16 33 Addr 1 34 (reserved) 35 Addr 0 36 Addr 2 37 -CS0 (1F0-1F7) 38 -CS1 (3f6-3f7) 39 -Active 40 GND Portables use a 44 pin IDE connector, which is the same as above plus: 41 +5V (logic) 42 +5V (motor) 43 GND 44 reserved ESDI Hard Disk Interface Command cable Connector:34 pin header pin assignment pin assignment 1 GND 2 Head Sel 3 3 GND 4 Head Sel 2 5 GND 6 Write Gate 7 GND 8 Config/Stat Data 9 GND 10 Transfer Ack 11 GND 12 Attn 13 GND 14 Head Sel 0 15 GND 16 Sect/Add MK Found 17 GND 18 Head Sel 1 19 GND 20 Index 21 GND 22 Ready 23 GND 24 Trans Req 25 GND 26 Drive Sel 1 27 GND 28 Drive Sel 2 29 GND 30 Drive Sel 3 31 GND 32 Read Gate 33 GND 34 Command Data ESDI Hard Disk Interface Data cable Connector:20 pin header pin assignment pin assignment 1 Drive Selected 2 Sect/Add MK Found 3 Seek Complete 4 Addr Mark Enable 5 (reserved) 6 GND 7 Write Clk+ 8 Write Clk- 9 Cartridge Chng 10 Read Ref Clk+ 11 Read Ref Clk- 12 GND 13 NRZ Write Data+ 14 NRZ Write Data- 15 GND 16 GND 17 NRZ Read Data+ 18 NRZ Read Data- 19 GND 20 GND RLL/MFM Hard Disk Interface Command cable Connector:34 pin header pin assignment pin assignment 1 GND 2 Head Sel 8 3 GND 4 Head Sel 4 5 GND 6 Write Gate 7 GND 8 Seek Complete 9 GND 10 Track 0 11 GND 12 Write Fault 13 GND 14 Head Sel 1 15 GND 16 (reserved) 17 GND 18 Head Sel 2 19 GND 20 Index 21 GND 22 Ready 23 GND 24 Step 25 GND 26 Drive Sel 1 27 GND 28 Drive Sel 2 29 GND 30 Drive Sel 3 31 GND 32 Drive Sel 4 33 GND 34 Direction In RLL/MFM Hard Disk Interface Data cable Connector:20 pin header pin assignment pin assignment 1 Drive Selected 2 GND 3 (reserved) 4 GND 5 (reserved) 6 GND 7 (reserved) 8 GND 9 (reserved) 10 (reserved) 11 GND 12 GND 13 Write Data+ 14 Write Data- 15 GND 16 GND 17 Read Data+ 18 NRZ Read Data- 19 GND 20 GND Single ended SCSI-1,SCSI-2 external
Connector:50 pin Centronics 1-12 GND 13 No Connection 14-25 GND 26-33 Data0-Data7 34 Data Parity 35 GND 36 GND 37 Reserved 38 Terminator Power 39 Reserved 40 GND 41 -ATN 42 GND 43 -BSY 44 -ACK 45 -RST 46 -MSG 47 -SEL 48 -C/D 49 -REQ 50 -I/O Single ended SCSI-1/SCSI-2 internal
Connector: 50 pin header Same as above, except: 37 GND 39 GND (The two Reserved pins) Differential SCSI-1/SCSI-2 external Connector: 50 pin Centronics 1 GND 2-9 +Data0 - +Data7 10 +Data Parity 11 DIFFSENS 12 Reserved 13 Terminator Power 14 Reserved 15 +ATN 16 GND 17 +BSY 18 +ACK 19 +RST 20 +MSG 21 +SEL 22 +C/D 23 +REQ 24 +I/O 25 GND 26 GND 27-34 -Data0 - -Data7 34 -Data Parity 36 GND 37 Reserved 38 Terminator Power 39 Reserved 40 -ATN 41 GND 42 -BSY 43 -ACK 44 -RST 45 -MSG 46 -SEL 47 -C/D 48 -REQ 49 -I/O 50 GND Differential SCSI-1/SCSI-2 internal Connector: 50 pin header same as external 25 Pin SCSI: Warning: Based on the pinout of an Apple connector, who is not famous for adhering to standards.
Connector:D25 D25 Centronics 50 1 49 2 46 3 50 4 45 5 44 6 43 7 16,18,19 GND 8 26 9 20-22 GND 10 29 11 31 12 32 13 33 14 1-3 GND 15 48 16 4-6 GND 17 41 18 7-9,11 GND 19 47 20 34 21 27 22 28 23 30 24 23-25 GND 25 38
This pinout does not have a sufficient number of ground lines (they are paired with the data lines) to meet SCSI standards. Avoid it at all costs, especially if you're using more than SCSI-1. Sun extra chunky SCSI-1
Connector: D50 (3 rows of pins) 1 GND 2 data0 3 GND 4 data1 5 GND 6 data2 7 GND 8 data3 9 GND 10 data4 11 GND 12 data5 13 GND 14 data6 15 GND 16 data7 17 GND 18 parity 19-24 GND 25 ? 26 ? 27-31 GND 32 Attention 33-35 GND 36 Busy 37 GND 38 Ack 30 GND 40 Reset 41 GND 42 Message 43 GND 44 Select 45 GND 46 Command/Data 47 GND 48 Request 49 GND 50 Input/Output
SCA Wide SCSI ------- ------- 80 pin 68 pin cable function 41-44 1-16 1-31 46-73 20-34 39-67 49-50 30,32 54 40 56 44 Ground 1-4 -- -- +12V 34-36 -- -- +5V 33 35 2 DB12 32 36 4 DB13 31 37 6 DB14 30 38 8 DB15 29 39 10 DBP1 28 40 12 DB0 27 41 14 DB1 26 42 16 DB2 25 43 18 DB3 24 44 20 DB4 23 45 22 DB5 22 46 24 DB6 21 47 26 DB7 20 48 28 DBP0 29-32 are GND 33-36 are TERM PWR (NC) 37+38 are RESERVED (NC) 39+40 are GND 19 55 42 ATN 43+44 are GND 18 57 46 BSY 17 58 48 ACK 16 59 50 RST 15 60 52 MSG 14 61 54 SEL 13 62 56 C/D 12 63 58 REQ 11 64 60 I/O 10 65 62 DB8 9 66 64 DB9 8 67 66 DB10 7 68 68 DB11 37 -- -- SYNC 38 -- -- RMT_START 77 -- -- ACTIVE LED OUT 78 -- -- DLYD_START 39 -- -- SCSI ID(0) 79 -- -- SCSI ID(1) 40 -- -- SCSI ID(2) 80 -- -- SCSI ID(3)
10 pin Video Connector found on some old video cameras. From an RCA CC010, and Panasonic 3110. Connector: 10 pin video 1 video signal 2 video ground 3 C. Remote 4 Record 5 Standby 6 C. Pus 7 audio signal 8 audio ground 9 power ground 10 power +12VDC pins 3-6 are various controls from the camera back to the VCR. Radio port on a MFJ 1270C/1276 TNC2 packet radio TNC Connector: 5 pin DIN 1 audio out (to radio) 2 ground 3 Push to talk 4 audio in (from radio) 5 Squelch in push to talk is grounded when transmitting, floating otherwise.