Pinouts
These pinouts are for general reference... Whatever happens when you use
(or don't use) them is not my fault. I make typos - use at your own risk.
Serial
| Parallel
| Joystick/MIDI
| CGA
| Monochrome
| VGA
| AT_Keyboard
| PS/2
| AT_Power_Supply
| ATX_Power_Supply
| RJ45_Network_Connector
| ISA/VESA
| PCI
| 8086
| 8088
| 80286
| 80386
| 80486
| Pentium
| Slot 1 (PII/III)
Null_Modem
| Null_Hub_Cable
| Cat5_Cable
| LapLink
| DC20_Digital_Camera
| ZIP_Drive
| Compaq_1525_VGA_Monitor
| T1 CSU/DSU to NI Cable
| BRI Cable
Serial port
DB25 - Male
_________________________________________
\ 1 2 3 4 5 6 7 8 9 10 11 12 13 /
\ 14 15 16 17 18 19 20 21 22 23 24 25 /
-------------------------------------
DB9 - Male
_____________
\ 1 2 3 4 5 /
\ 6 7 8 9 /
---------
| DB9 pin | DB25 pin | Connection |
| 1 | 8 | Carrier detect |
| 2 | 3 | Recieve data |
| 3 | 2 | Transmit data |
| 4 | 20 | Data terminal ready |
| 5 | 7 | Ground |
| 6 | 6 | Data set ready |
| 7 | 4 | Request to send |
| 8 | 5 | Clear to send |
| 9 | 22 | Ring |
| 1 | Ground |
| 9,10 | Reserved |
| 12 | Secondary rcvd line sig. det. |
| 13 | Secondary clear to send |
| 14 | Secondary transmit data |
| 15 | Transmission signal element timing |
| 16 | Secondary recieve data |
| 17 | Recieve timing |
| 19 | Secondary request to send |
| 21 | Signal quality |
| 23 | Signal rate select |
| 24 | Transmission signal timing |
All others unassigned
Note: It is common for only pins 2,3,4,5,6,7,8,20 & 22 to be connected on a DB25 plug.
(aka the ones with a DB9 equivilent)
Parallel port
DB25 - Male
_________________________________________
\ 1 2 3 4 5 6 7 8 9 10 11 12 13 /
\ 14 15 16 17 18 19 20 21 22 23 24 25 /
-------------------------------------
Centronics - Male
___________________________________________________________
( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 )
\ | | | | | | | | | | | | | | | | | | /
\ 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 /
-------------------------------------------------------
| DB25 pin | Centronics pin | Connection |
| 1 | 1 | Strobe (low during data xfer) |
| 2 | 2 | Bit 0 |
| 3 | 3 | Bit 1 |
| 4 | 4 | Bit 2 |
| 5 | 5 | Bit 3 |
| 6 | 6 | Bit 4 |
| 7 | 7 | Bit 5 |
| 8 | 8 | Bit 6 |
| 9 | 9 | Bit 7 |
| 10 | 10 | Acknowledge (low when printer rcvs char) |
| 11 | 11 | Busy (high when busy) |
| 12 | 12 | Paper out (high when out) |
| 13 | 13 | Online (high when online) |
| 14 | 14 | Line Feed (low when printer should turn CR to CR+LF) |
| 15 | 32 | Error (low when error) |
| 16 | 31 | Initialize (low to initialize) |
| 17 | 36 | Select (low selects printer) |
| 18-25 | 19-30,33 | Signal ground |
| 15 | unused |
| 16 | 0V |
| 17 | Chassis ground |
| 18 | +5V |
| 34,35 | unused |
Joystick/MIDI Port
DB15 - Male
__________________________
\ 1 2 3 4 5 6 7 8 /
\ 9 10 11 12 13 14 15 /
----------------------
| Pin | Description |
| 1 | +5V |
| 2 | Joystick 1 button 1 |
| 3 | Joystick 1 X |
| 4 | Ground |
| 5 | Ground |
| 6 | Joystick 1 Y |
| 7 | Joystick 1 button 2 |
| 8 | +5V |
| 9 | +5V |
| 10 | Joystick 2 button 1 (or joy 1 button 3) |
| 11 | Joystick 2 X |
| 12 | MIDI out (or ground on some sound cards) |
| 13 | Joystick 2 Y (or joy 1 hat) |
| 14 | Joystick 2 button 2 (or joy 1 button 4) |
| 15 | MIDI in (+5V on some sound cards) |
Note: Only one high end 4 button joystick (or joystick with a hat) can be used on a system
at once due to pin conflicts. Game cards with two ports won't help as the conflict exists at
the software level as well.
CGA Plug
DB9 - Male
_____________
\ 1 2 3 4 5 /
\ 6 7 8 9 /
---------
| Pin | Connection |
| 1 | Ground |
| 2 | Shield Ground |
| 3 | Red |
| 4 | Green |
| 5 | Blue |
| 6 | Intensity |
| 7 | Reserved |
| 8 | Horizontal sync |
| 9 | Vertical sync |
Monchrome Plug
DB9 - Male
_____________
\ 1 2 3 4 5 /
\ 6 7 8 9 /
---------
| Pin | Connection |
| 1 | Ground |
| 2 | Shield Ground |
| 3 | N/C |
| 4 | N/C |
| 5 | N/C |
| 6 | + intensity |
| 7 | + video |
| 8 | + horizontal |
| 9 | - vertical |
VGA Plug
______________________
\ 1 2 3 4 5 /
\ 6 7 8 9 10 /
\ 11 12 13 14 15 /
----------------
| Pin | Connection |
| 1 | Red |
| 2 | Green |
| 3 | Blue |
| 4 | Monitor ID bit 2 |
| 5 | Signal ground |
| 6 | Red return |
| 7 | Green return |
| 8 | Blue return |
| 9 | Key (sometimes no pin or hole) |
| 10 | Signal ground |
| 11 | Monitor ID bit 0 |
| 12 | Monitor ID bit 1 |
| 13 | Horizontal sync |
| 14 | Vertical sync |
| 15 | Reserved |
Note: Some pins are often not used.
AT Keyboard Plug
DIN 5-pin round
1 5
2 4
3
| Pin | Description |
| 1 | Clock |
| 2 | Data |
| 3 | Reset |
| 4 | Ground |
| 5 | +5V |
Male PS/2 Plug (Keyboard/Mouse)
6-pin mini DIN
5 6
3 [] 4
1 2
| Pin | Description |
| 1 | Data |
| 2 | Reserved |
| 3 | Ground |
| 4 | +5V |
| 5 | Clock |
| 6 | Reserved |
Mainboard Power Supply
BACK OF SYSTEM BOARD
------------------------------
| | --- |
------ P |. |1 |
KEYBOARD O |. |2 |
CONNECTOR W P |. |3 |
E 8 |. |4 |
R |. |5 |
|. |6 |
S --- |
U --- |
P |. |1 |
P |. |2 |
L P |. |3 |
Y 9 |. |4 |
|. |5 |
CONN. |. |6 |
--- |
| Pin | P8 Color | P8 Description | P9 Color | P9 Description |
| 1 | Orange | Power Good | Black | Ground |
| 2 | Red | +5V | Black | Ground |
| 3 | Yellow | +12V | White | -5V |
| 4 | Blue | -12V | Red | +5V |
| 5 | Black | Ground | Red | +5V |
| 6 | Black | Ground | Red | +5V |
ATX Power Supply
____ 1
1 2 3 4 |5 6| 7 8 9 0
----------------------------------
| \_/|_||_|\_/\_/|_||_|\_/\_/|_| | (Connector from Power Supply)
| |_|\_/\_/|_||_|\_/\_/|_||_|\_/ |
----------------------------------
1 1 1 1 1 1 1 1 1 2
1 2 3 4 5 6 7 8 9 0
| Pin | Color | Description |
| 1 | Orange | +3.3V |
| 2 | Blue | -12V |
| 3 | Black | Ground |
| 4 | Green | Power Switch |
| 5 | Black | Ground |
| 6 | Black | Ground |
| 7 | Black | Ground |
| 8 | White | -5V |
| 9 | Red | +5V |
| 10 | Red | +5V |
| 11 | Orange | +3.3V |
| 12 | Orange | +3.3V |
| 13 | Black | Ground |
| 14 | Red | +5V |
| 15 | Black | Ground |
| 16 | Red | +5V |
| 17 | Black | Ground |
| 18 | Grey | Power Good |
| 19 | Purple | +5VSB |
| 20 | Yellow | +12V |
Male RJ45 Connector
I-----------------------------------
I |
I I------I ----1-| TxData +
I I I ----2-| TxData -
I I I - - - - - - - ----3-| RxData +
I I I : ----4-|
I I I : ----5-|
I I I - - - - - - - ----6-| RxData -
I I I ----7-|
I I------I ----8-|
I |
I-----------------------------------
Pins on top, clip underneath.
ISA/VESA Slot
(Top of (Bottom of
PC card) PC card)
----
I/O CH CK| |GND
D7| |RESET DRV
D6| |+5V
D5| |IRQ2
D4| |-5V
D3| |DRQ2
D2| |-12V
D1| |0WS
D0| |+12V
I/O CH RDY| |GND
AEN| |SMEMW
A19| |SMEMR
A18| |IOW
A17| |IOR
A16| |DACK3 8-bit section
A15| |DRQ3
A14| |DACK1
A13| |DRQ1
A12| |REF
A11| |CLK
A10| |IRQ7
A9| |IRQ6
A8| |IRQ5
A7| |IRQ4
A6| |IRQ3
A5| |DACK2
A4| |TC
A3| |ALE
A2| |+5V
A1| |OSC
A0| |GND
----
----
SBHE| |MEM CS16
LA23| |I/O CS16
LA22| |IRQ10
LA21| |IRQ11
LA20| |IRQ12
LA19| |IRQ15
LA18| |IRQ14
LA17| |DACK0 optional 16-bit section
MEMR| |DRQ0
MEMW| |DACK5
SD8| |DRQ5
SD9| |DACK6
SD10| |DRQ6
SD11| |DACK7
SD12| |DRQ7
SD13| |+5V
SD14| |MASTER
SD15| |GND
----
----
D1| |D0
D3| |D2
GND| |D4
D5| |D6
D7| |D8
D9| |GND
D11| |D10
D13| |D12
D15| |Vcc
GND| |D14
D17| |D16
Vcc| |D18
D19| |D20
D21| |GND
D23| |D22
D25| |D24
GND| |D26
D27| |D28
D29| |D30
D31| |Vcc optional VESA-Local section
A30| |A31
A28| |GND
A26| |A29
GND| |A27
A24| |A25
A22| |A23
Vcc| |A21
A20| |A19
A18| |GND
A16| |A17
A14| |A15
A12| |Vcc
A10| |A13
A8| |A11
GND| |A9
A6| |A7
A4| |A5
WBACK| |GND
BE0| |A3
Vcc| |A2
BE1| |free
BE2| |RESET
GND| |D/C
B33| |M/IO
ADS| |W/R
----
PCI Slot
(Top of (Bottom of
PC card) PC card) when installed
----
TRST | | -12V
+12V | | TCK
TMS | | GND
TDI | | TDO
+5V | | +5V
INTA | | +4V
INTC | | INTB
+5V | | INTD
res | | PRSNT1
+5VI/O | | res
res | | PRSNT2
GND | | GND
GND | | GND
res | | res
RST | | GND
+5VI/O | | CLK
GNT | | GND
GND | | REQ
res | | +5VI/O
AD30 | | AD31
+3.3V | | AD29
AD28 | | GND
AD26 | | AD27
GND | | AD25
AD24 | | +3.3V
IDSEL | | C/BE3
+3.3V | | AD23
AD22 | | GND
AD20 | | AD21
GND | | AD19
AD18 | | +3.3V
AD16 | | AD17
+3.3V | | C/BE2
FRAME | | GND
GND | | IRDY
TRDY | | +3.3V
GND | | DEVSEL
STOP | | GND
+3.3V | | LOCK
SDONE | | PERR
SBO | | +3.3V
GND | | SERR
PAR | | +3.3V
AD15 | | C/BE1
+3.3V | | AD14
AD13 | | GND
AD11 | | AD12
GND | | AD10
AD9 | | GND
----
----
C/BE0 | | AD8
+3.3V | | AD7
AD6 | | +3.3V
AD4 | | AD5
GND | | AD3
AD2 | | GND
AD0 | | AD1
+5VI/O | | +5VI/O
REQ64 | | ACK64
+5V | | +5V
+5V | | +5V
---- -- Most slots stop here at 32-bits
---- very few use the full 64-bits
GND | | res
C/BE7 | | GND
C/BE5 | | C/BE6
+5VI/O | | C/BE4
PAR64 | | GND
AD62 | | AD63
GND | | AD61
AD60 | | +5VI/O
AD58 | | AD59
GND | | AD57
AD56 | | GND
AD54 | | AD55
+5VI/O | | AD53
AD52 | | GND
AD50 | | AD51
GND | | AD49
AD48 | | +5VI/O
AD46 | | AD47
GND | | AD45
AD44 | | GND
AD42 | | AD43
+5VI/O | | AD41
AD40 | | GND
AD38 | | AD39
GND | | AD37
AD36 | | +5VI/O
AD34 | | AD35
GND | | AD33
AD32 | | GND
res | | res
GND | | res
res | | GND
----
i8086/8087
Minimum Maximum
------- -------
GND --|1 U 40|-- Vcc GND --|1 U 40|-- Vcc
A14 --| |-- A15 A14 --| |-- A15
A13 --| |-- A16/S3 A13 --| |-- A16/S3
A12 --| |-- A17/S4 A12 --| |-- A17/S4
A11 --| |-- A18/S5 A11 --| |-- A18/S5
A10 --| |-- A19/S6 A10 --| |-- A19/S6
A9 --| |-- BHE/S7 A9 --| |-- BHE/S7
A8 --| |-- MN/MX A8 --| |-- RQ/GT1
AD7 --| 8 |-- RD AD7 --| 8 |-- INT
AD6 --| 0 |-- RQ/GT0 HOLD AD6 --| 0 |-- RQ/GT0
AD5 --| 8 |-- RQ/GT1 HLDA AD5 --| 8 |-- free
AD4 --| 6 |-- LOCK WR AD4 --| 7 |-- free
AD3 --| |-- S2 IO/M AD3 --| |-- S2
AD2 --| |-- S1 DT/R AD2 --| |-- S1
AD1 --| |-- S0 DEN AD1 --| |-- S0
AD0 --| |-- QS0 ALE AD0 --| |-- QS0
NMI --| |-- QS1 INTA NMI --| |-- QS1
INTR --| |-- TEST INTR --| |-- BUSY
CLK --| |-- READY CLK --| |-- READY
GND --| |-- RESET GND --| |-- RESET
------- -------
i8088
Minimum Maximum
-------
GND --|1 U 40|-- Vcc
A14 --| |-- A15
A13 --| |-- A16/S3
A12 --| |-- A17/S4
A11 --| |-- A18/S5
A10 --| |-- A19/S6
A9 --| |-- high SS0
A8 --| |-- MN/MX
AD7 --| 8 |-- RD
AD6 --| 0 |-- RQ/GT0 HOLD
AD5 --| 8 |-- RQ/GT1 HLDA
AD4 --| 8 |-- LOCK WR
AD3 --| |-- S2 IO/M
AD2 --| |-- S1 DT/R
AD1 --| |-- S0 DEN
AD0 --| |-- QS0 ALE
NMI --| |-- QS1 INTA
INTR --| |-- TEST
CLK --| |-- READY
GND --| |-- RESET
-------
80286
C
O
D
/ R P E
L M I H H E E f I f f B R
O / N L O A V R G N r N r r U R C
C I T D L D c E N M e T e e S O A
K O A A D Y c Q D I e R e e Y R P
| | | | | | | | | | | | | | | | |
-------------------------------------------------
/6 5 \
/O8 2 \
BHE --| 1 51 |-- D15
free --| |-- D7
free --| |-- D14
S1 --| |-- D6
S0 --| |-- D13
PEACK --| ##### ##### ##### ##### ##### |-- D5
A23 --| # # # # # # # # |-- D12
A22 --| ##### # # ##### ##### ##### |-- D4
GND --| # # # # # # # # # |-- D11
A21 --| ##### ##### ##### ##### ##### |-- D3
A20 --| PLCC |-- D10
A19 --| |-- D2
A18 --| |-- D9
A17 --| |-- D1
A16 --| |-- D8
A15 --| |-- D0
A14 --| 17 35 |-- GND
\ 1 3 /
\8 4/
-------------------------------------------------
| | | | | | | | | | | | | | | | |
A A A A A A A A A A A R V C A A A
1 1 1 1 9 8 7 6 5 4 3 E c L 2 1 0
3 2 1 0 S c K
E
T
80286-PGA (pin assignments are the same as for the PLCC version)
| | 1 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | |
| 68 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 19 | 18 |
| 66 | 67 | | | | | | | | 21 | 20 |
| 64 | 65 | | | | | | | | 23 | 22 |
| 62 | 63 | | | | | | | | 25 | 24 |
| 60 | 61 | | | | | | | | 27 | 26 |
| 58 | 59 | | | | | | | | 29 | 28 |
| 56 | 57 | | | | | | | | 31 | 30 |
| 54 | 55 | | | | | | | | 33 | 32 |
| 52 | 53 | 50 | 48 | 46 | 44 | 42 | 40 | 38 | 36 | 34 |
| | 51 | 49 | 47 | 45 | 43 | 41 | 39 | 37 | 35 | |
80287
------- f
free --|1 U 40|-- free V D D G r V D D D
free --| |-- CKM D D c 1 1 N e c 1 1 1
free --| |-- free 8 9 c 0 1 D e c 2 3 4
free --| |-- free | | | | | | | | | | |
D15 --| |-- PEACK /----------------------
D14 --| |-- RESET D7 --|18 6|-- free
D13 --| |-- NPS1 D6 --| |-- D15
D12 --| |-- NPS2 D5 --| |-- GND
Vcc --| 8 |-- CLK D4 --| |-- Vcc
GND --| 0 |-- CMD1 D3 --| 80287 |-- GND
D11 --| 2 |-- GND free --| 1|-- Vcc
D10 --| 8 |-- CMD0 D2 --| PLCC 44|-- CKM
free --| 7 |-- NPWR D1 --| |-- GND
D9 --| |-- NPRD D0 --| |-- Vcc
D8 --| |-- ERROR PEREQ --| |-- PEACK
D7 --| |-- BUSY BUSY --|28 40|-- free
D6 --| |-- PEREQ -----------------------
D5 --| |-- D0 | | | | | | | | | | |
D4 --| |-- D1 E N N C f G C C N N R
D3 --| |-- D2 R P P M r N M L P P E
------- R R W D e D D K S S S
O D R 0 e 1 2 1 E
R T
i386SX
G V V D D D G V D D D A A G G A
__ D D N c D D D D D c D D 1 1 1 N c 1 1 1 2 2 N N 2 __
/ \ 1 2 D c 3 4 5 6 7 c 8 9 0 1 2 D c 3 4 5 3 2 D D 1 / \
/ \ | | | | | | | | | | | | | | | | | | | | | | | | | / \
| \-------------------------------------------------------------------------/ |
\ O 1 7 /
\ 0 6 /
\ 0 /
D0 --| 1 75 |-- A20
GND --| |-- A19
HLDA --| |-- A18
HOLD --| |-- A17
GND --| |-- Vcc
NA --| |-- A16
READY --| |-- Vcc
Vcc --| |-- GND
Vcc --| # ##### ##### ##### ##### # # |-- GND
Vcc --| # # # # # # # |-- A15
GND --| # #### ##### ##### ##### # |-- A14
GND --| # # # # # # # # # |-- A13
GND --| # ##### ##### ##### ##### # # |-- GND
GND --| |-- A12
CLK2 --| |-- A11
ADS --| |-- A10
BLE --| |-- A9
A1 --| |-- A8
BHE --| |-- Vcc
free --| |-- A7
Vcc --| |-- A6
GND --| |-- A5
M/IO --| |-- A4
D/C --| |-- A3
W/R --| 25 51 |-- A2
/ 2 5 \
/ 6 0 \
/ _________________________________________________________________________ \
| /| | | | | | | | | | | | | | | | | | | | | | | | |\ |
\ / C f F f f f V R B G E P N V I G V f f f f f V G G \ /
\__/ L r L r r r c E U N R E M c N N c r r r r r c N N \__/
O e T e e e c S S D R R I c T D c e e e e e c D D
C e e e e E Y O E R e e e e e
K T R Q
i387SX Math Co-processor
C N
R P U
E P U M
f f f A E C C f
r r G r V G V G G C V D R G L L r
e e N e c N c N N K c Y E N K K e
e e D e c D c D D M c 0 Q D 2 2 e
| | | | | | | | | | | | | | | | |
-------------------------------------------------
/6 5 \
/O8 2 \
free --| 1 51 |-- RESETIN
D7 --| |-- Vcc
D6 --| |-- READY
Vcc --| |-- CMD0
GND --| |-- ADS
D5 --| # ##### ##### ##### ##### # # |-- Vcc
D4 --| # # # # # # # |-- NPS2
D3 --| # ##### ##### # ##### # |-- NPS1
Vcc --| # # # # # # # # |-- Vcc
free --| # ##### ##### # ##### # # |-- GND
D15 --| PLCC |-- W/R
D14 --| |-- STEN
Vcc --| |-- Vcc
GND --| |-- GND
D13 --| |-- Vcc
D12 --| |-- BUSY
free --| 17 35 |-- ERROR
\ 1 3 /
\8 4/
-------------------------------------------------
| | | | | | | | | | | | | | | | |
f D D G V D D G V G D D D V G V G
r 0 1 N c 2 8 N c N 9 1 1 c N c N
e D c D c D 0 1 c D c D
i386
A B C D E F G H J K L M N P
/---------------------------
1 /o o o o o o o o o o o o o o |
2 | o o o o o o o o o o o o o o |
3 | o o o o o o o o o o o o o o |
4 | o o o o o o o |
5 | o o o o o o |
6 | o o o o o o |
7 | o o o o o o |
8 | o o o i386 o o o |
9 | o o o o o o |
10 | o o o o o o |
11 | o o o o o o |
12 | o o o o o o o o o o o o o o |
13 | o o o o o o o o o o o o o o |
14 | o o o o o o o o o o o o o o |
-----------------------------
| | A | B | C | D | E | F | G | H | J | K | L | M | N | P |
| 1 | Vcc | GND | A8 | A11 | A14 | A15 | A16 | A17 | A20 | A21 | A23 | A26 | A27 | A30 |
| 2 | GND | A5 | A7 | A10 | A13 | GND | Vcc | A18 | GND | A22 | A24 | A29 | A31 | Vcc |
| 3 | A3 | A4 | A6 | A9 | A12 | GND | Vcc | A19 | GND | A25 | A28 | Vcc | GND | D30 |
| 4 | free | free | A2 | | | | | | | | | GND | Vcc | D29 |
| 5 | Vcc | GND | Vcc | | | | | | | | | D31 | D27 | D26 |
| 6 | GND | free | free | | | | | | | | | D28 | D25 | GND |
| 7 | Vcc | INTR | free | | | | | | | | | Vcc | Vcc | D24 |
| 8 | ERROR | NMI | PEREQ | | | | | | | | | GND | D23 | Vcc |
| 9 | GND | BUSY | RESET | | | | | | | | | D20 | D21 | D22 |
| 10 | Vcc | W/R | LOCK | | | | | | | | | GND | D17 | D19 |
| 11 | D/C | GND | GND | | | | | | | | | D15 | D16 | D18 |
| 12 | M/IO | free | Vcc | Vcc | BE0 | CLK2 | Vcc | D0 | GND | D7 | Vcc | D10 | D12 | D14 |
| 13 | BE3 | BE2 | BE1 | NA | free | free | READY | D1 | GND | D5 | D8 | Vcc | D11 | D13 |
| 14 | Vcc | GND | BS16 | HOLD | ADS | GND | Vcc | D2 | D3 | D4 | D6 | HLDA | D9 | GND |
i387
A B C D E F G H J K L
/---------------------
1 / o o o o o o o o o |
2 | o o o o o o o o o o o |
3 | o o o o |
4 | o o o o |
5 | o o o o |
6 | o o i387 o o |
7 | o o o o |
8 | o o o o |
9 | o o o o |
10 | o o o o o o o o o o o |
11 | o o o o o o o o o |
-----------------------
| | A | B | C | D | E | F | G | H | J | K | L |
| 1 | | D8 | D7 | D5 | Vcc | Vcc | D3 | D1 | GND | PEREQ | |
| 2 | D9 | GND | D6 | D4 | GND | GND | D2 | D0 | Vcc | BUSY | ERROR |
| 3 | D11 | D10 | | | | | | | | high | READY0 |
| 4 | D12 | Vcc | | | | | | | | W/R | STEN |
| 5 | D14 | D13 | | | | | | | | Vcc | GND |
| 6 | Vcc | D15 | | | | | | | | NPS2 | NPS1 |
| 7 | D16 | GND | | | | | | | | ADS | Vcc |
| 8 | D18 | D17 | | | | | | | | READY | CMD0 |
| 9 | Vcc | D19 | | | | | | | | free | high |
| 10 | D21 | D20 | D23 | D24 | D26 | Vcc | D28 | D30 | GND | CPUCLK2 | RESETIN |
| 11 | | D22 | GND | D25 | D27 | GND | D29 | D31 | CKM | NUMCLK2 | |
i486
A B C D E F G H J K L M N P Q R S
/---------------------------------
1 /o o o o o o o o o o o o o o o o o |
2 | o o o o o o o o o o o o o o o o o |
3 | o o o o o o o o o o o o o o o o o |
4 | o o o o o o o |
5 | o o o o o o |
6 | o o o o o o |
7 | o o o o o o |
8 | o o o o o o |
9 | o o o i486 o o o |
10 | o o o o o o |
11 | o o o o o o |
12 | o o o o o o |
13 | o o o o o o |
14 | o o o o o o |
15 | o o o o o o o o o o o o o o o o o |
16 | o o o o o o o o o o o o o o o o o |
17 | o o o o o o o o o o o o o o o o o |
-----------------------------------
| | A | B | C | D | E | F | G | H | J | K | L | M | N | P | Q | R | S |
| 1 | D20 | D19 | D11 | D9 | GND | DP1 | GND | GND | Vcc | GND | GND | GND | D2 | D0 | A31 | A28 | A27 |
| 2 | D22 | D21 | D18 | D13 | Vcc | D8 | Vcc | D3 | D5 | Vcc | D6 | Vcc | D1 | A29 | GND | A25 | A26 |
| 3 | free | GND | CLK | D17 | D10 | D15 | D12 | DP2 | D16 | D14 | D7 | D4 | DP0 | A30 | A17 | Vcc | A23 |
| 4 | D23 | GND | Vcc | ENCOD | | | | | | | | | | | A19 | GND | free |
| 5 | DP3 | GND | Vcc | | | | | | | | | | | | A21 | A18 | A14 |
| 6 | D24 | D25 | D27 | | | | | | | | | | | | A24 | Vcc | GND |
| 7 | GND | Vcc | D26 | | | | | | | | | | | | A22 | A15 | A12 |
| 8 | D29 | D31 | D28 | | | | | | | | | | | | A20 | Vcc | GND |
| 9 | GND | Vcc | D30 | | | | | | | | | | | | A16 | Vcc | GND |
| 10 | free | free | free | | | | | | | | | | | | A13 | Vcc | GND |
| 11 | GND | Vcc | free | | | | | | | | | | | | A9 | Vcc | GND |
| 12 | free | free | free | | | | | | | | | | | | A5 | A11 | GND |
| 13 | free | free | free | | | | | | | | | | | | A7 | A8 | A10 |
| 14 | free | free | free | | | | | | | | | | | | A2 | Vcc | GND |
| 15 | NMI | free | FLUSH | A20M | HOLD | KEN | free | BRDY | BE2 | BE0 | PWT | D/C | LOCK | HLDA | BREQ | A3 | A6 |
| 16 | INTR | free | RESET | BS8 | Vcc | RDY | Vcc | Vcc | BE1 | Vcc | Vcc | Vcc | M/IO | Vcc | PLOCK | BLAST | A4 |
| 17 | AHOLD | EADS | BS16 | BOFF | GND | BE3 | GND | GND | PCD | GND | GND | GND | W/R | GND | PCHK | free | ADS |
Intel Pentium 75 and up
A B C D E F G H J K L M N P Q R S T U V W X Y Z AA AB AC AD AE AF AG AH AJ AK AL AM AN
--------------------------------------------------------------------------------------------------------------
1 | o o o o o o o o o o o o o o o o o o |
2 | o o o o o o o o o o o o o o o o o o |
3 | o o o o o o o o o o o o o o o o o o o |
4 | o o o o o o o o o o o o o o o o o o |
5 | o o o o o o o o o o o o o o o o o o o |
6 | o o o o o |
7 | o o o o o |
8 | o o o o |
9 | o o o o o |
10 | o o o o |
11 | o o o o |
12 | o o o o |
13 | o o o o |
14 | o o o o |
15 | o o o o |
16 | o o o o |
17 | o o o o |
18 | o o o o |
19 | o o Pentium o o |
20 | o o 75 Mhz and up o o |
21 | o o source o o |
22 | o o o o |
23 | o o o o |
24 | o o o o |
25 | o o o o |
26 | o o o o |
27 | o o o o |
28 | o o o o |
29 | o o o o |
30 | o o o o |
31 | o o o o |
32 | o o o o |
33 | o o o o o o o o o o o o o o o o o o o |
34 | o o o o o o o o o o o o o o o o o o |
35 | o o o o o o o o o o o o o o o o o o o |
36 | o o o o o o o o o o o o o o o o o o |
37 | o o o o o o o o o o o o o o o o o o o |
---------------------------------------------------------------------------------------------------------------
| | A | B | C | D | E | F | G | H | J | K | L | M | N | P | Q | R | S | T | U | V | W | X | Y | Z | A
A | AB | AC | AD | AE | AF | AG | AH | AJ | AK | AL | AM | AN |
| 1 | | | INC | | D54 | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | V
cc | | Vcc | | Vcc | | Vcc | | BREQ | | INC | | INC |
| 2 | | INC | | D50 | | DP6 | | Vss | | Vss | | Vss | | Vss | | Vss | | Vss | | Vss | | Vss | | Vss |
| Vss | | Vss | | Vss | | Vss | | AP | | ADSC# | |
| 3 | INC | | D47 | | D52 | | D55 | | D57 | | D61 | | D63 | | PM0BP0 | | BP2 | | CACHE# | | EWBE# | | BRDYC# | | P
HIT# | | PHITM# | | PBREQ# | | SMIACT# | | HLDA | | PWT | | INC |
| 4 | | D43 | | D48 | | D51 | | D56 | | D59 | | D62 | | IERR# | | PM1BP1 | | MI/O# | | AHOLD | | BRDY# | | BOFF# |
| HOLD | | PBGNT# | | PCHK# | | LOCK# | | DC# | | EADS# | |
| 5 | D41 | | D45 | | D49 | | D53 | | D58 | | D60 | | DP7 | | FERR# | | BP3 | | INV | | KEN# | | NA# | | W
B/WT# | | PRDY | | APCHK# | | PCD | | ADS# | | HITM# | | INC |
| 6 | | Vss | | D44 | | DP5 | | | | | | | | | | | | | | | | | | |
| | | | | | | | | HIT# | | W/R# | |
| 7 | Vcc | | DP4 | | D46 | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | BUSCHK# | | FLUSH# |
| 8 | | Vss | | D40 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | A20M# | | Vss | |
| 9 | Vcc | | D38 | | D42 | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | BE0# | | Vcc |
| 10 | | Vss | | D39 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | BE1# | | Vss | |
| 11 | Vcc | | D36 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | BE2# | | Vcc |
| 12 | | Vss | | D37 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | BE3# | | Vss | |
| 13 | Vcc | | D34 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | BE4# | | Vcc |
| 14 | | Vss | | D35 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | BE5# | | Vss | |
| 15 | Vcc | | D32 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | BE6# | | Vcc |
| 16 | | Vss | | D33 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | BE7# | | Vss | |
| 17 | Vcc | | D31 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | SCVC | | Vcc |
| 18 | | Vss | | DP3 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | CLK | | Vss | |
| 19 | Vcc | | D29 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | NC | | Vcc |
| 20 | | Vss | | D30 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | RESET | | Vss | |
| 21 | Vcc | | D27 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | A20 | | Vcc |
| 22 | | Vss | | D28 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | A19 | | Vss | |
| 23 | Vcc | | D25 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | A18 | | Vcc |
| 24 | | Vss | | D26 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | A17 | | Vss | |
| 25 | Vcc | | DP2 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | A16 | | Vcc |
| 26 | | Vss | | D23 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | A15 | | Vss | |
| 27 | Vcc | | D24 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | A14 | | Vcc |
| 28 | | Vss | | D19 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | A13 | | Vss | |
| 29 | Vcc | | D21 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | A12 | | Vcc |
| 30 | | D20 | | DP1 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | A9 | | Vss | |
| 31 | D22 | | D17 | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | A11 | | A10 |
| 32 | | D16 | | D12 | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | A5 | | A8 | |
| 33 | D18 | | D14 | | D7 | | D3 | | PICD0 | | Vcc | | TD0 | | TRST# | | NC | | Vcc | | NC | | BF0 | | I
NIT | | NMI | | A23 | | A27 | | A31 | | A7 | | A6 |
| 34 | | D13 | | D6 | | D5 | | PICCLK | | D0 | | TCK | | TMS | | NC | | Vcc | | STPCLK# | | BF1 | | PEN# |
| SMI# | | INTR | | A21 | | A26 | | A29 | | A4 | |
| 35 | D15 | | D10 | | D6 | | D1 | | D2 | | PICD1 | | TD1 | | CPUTYP | | NC | | Vss | | NC | | FRCMC# | | I
GNNE# | | RS# | | D/P# | | A24 | | A25 | | A3 | | NC |
| 36 | | D11 | | DP0 | | D4 | | Vss | | Vss | | Vss | | Vss | | Vss | | Vss | | Vss | | Vss | | Vss |
| Vss | | Vss | | Vss | | A22 | | A28 | | A30 | |
| 37 | NC | | D9 | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | Vcc | | V
cc | | Vcc | | Vcc | | Vcc | | Vss | | Vss | | Vss |
Intel Pentium II and III
Allright... I'm drawing the line at 242 pins! You can get the
information from Intel's official datasheets available
here or from Intel (
II /
III
).
You can get general technical literature of just about any sort from Intel
here.
Specialty Cables
Null modem cable connections
DB9
| Name | Pin | Connects to | Pin | Name |
| TXD | 2 | (--------) | 3 | RXD |
| RXD | 3 | (--------) | 2 | RXD |
| Ground | 5 | (--------) | 5 | Ground |
DB25
| Name | Pin | Connects to | Pin | Name |
| TXD | 3 | (--------) | 2 | RXD |
| RXD | 2 | (--------) | 3 | RXD |
| Ground | 7 | (--------) | 7 | Ground |
RJ45 Cable to connect 2 computers without a hub
See RJ45 pinout.
1 <--> 3
2 <--> 6
3 <--> 1
4 <--> 4
5 <--> 5
6 <--> 2
7 <--> 7
8 <--> 8
Note: Color in caps means solid, lowercase means stripe color.
| Connector1 | Connector2 |
| Pin | Wire Color |
| 1 | green |
| 2 | GREEN |
| 3 | orange |
| 4 | BLUE |
| 5 | blue |
| 6 | ORANGE |
| 7 | brown |
| 8 | BROWN |
|
| Pin | Wire Color |
| 1 | orange |
| 2 | ORANGE |
| 3 | green |
| 4 | BLUE |
| 5 | blue |
| 6 | GREEN |
| 7 | brown |
| 8 | BROWN |
|
CAT5 Cable wiring order (568A)
See RJ45 pinout.
| Pin | Wire Color | Signal |
| 1 | green | TxData + |
| 2 | GREEN | TxData - |
| 3 | orange | RxData + |
| 4 | BLUE |
| 5 | blue |
| 6 | ORANGE | RxData - |
| 7 | brown |
| 8 | BROWN |
Laplink or Interlink cable connections
DB25
| Name | Pin | Connects to | Pin | Name |
| Bit 0 | 2 | (--------) | 15 | Error |
| Bit 1 | 3 | (--------) | 13 | Online |
| Bit 2 | 4 | (--------) | 12 | Paper out |
| Bit 3 | 5 | (--------) | 10 | Acknowledge |
| Bit 4 | 6 | (--------) | 11 | Busy |
| Acknowledge | 10 | (--------) | 5 | Bit 3 |
| Busy | 11 | (--------) | 6 | Bit 4 |
| Paper out | 12 | (--------) | 4 | Bit 2 |
| Online | 13 | (--------) | 3 | bit 1 |
| Error | 15 | (--------) | 2 | Bit 0 |
| Ground | 25 | (--------) | 25 | Ground |
Interface cable for Kodak DC20 Digital Camera
Serial DB9 - Female 1/8" "Stereo" Jack
_____________ ___
\ 5 4 3 2 1 / //---------// | | A
\ 9 8 7 6 / | | B
--------- U C
| Jack | DB9 | Meaning |
| A | 5 | Ground |
| B | 3 | Transmit to Camera |
| C | 2 | Receive from Camera |
Interface Cable for External Parallel ZIP drive
Just a simple straight through DB25 male to DB25 female cable, all pins connected.
Compaq 1525 Monitor
______________________
\ 1 2 3 4 5 /
\ 6 7 8 9 10 /
\ 11 12 13 14 15 /
----------------
| Pin | Wire | Connection |
| 1 | Pink | Red |
| 2 | Green | Green |
| 3 | Blue | Blue |
| 4 | Purple | Monitor ID bit 2 |
| 5 | Orange | Signal ground |
| 6 | N/C | Red return |
| 7 | N/C | Green return |
| 8 | N/C | Blue return |
| 9 | N/A | Key (sometimes no pin or hole) |
| 10 | N/C | Signal ground |
| 11 | Black | Monitor ID bit 0 |
| 12 | Grey | Monitor ID bit 1 |
| 13 | White | Horizontal sync |
| 14 | Yellow | Vertical sync |
| 15 | Brown | Reserved |
Note: The monitor ID bits are apparently used to convey the volume knob signal
T1 CSU/DSU to NI Cable
This cable is a straight-through 8-conductor cable with RJ48 male ends.
The pin numbering is the same as for a RJ45. This
data came from here.
| Pin |
Connection |
Description |
| 1 |
R1 |
Receive from network (to CSU) |
| 2 |
T1 |
Receive from network (to CSU) |
| 4 |
T |
Transmit to network (from CSU) |
| 5 |
R |
Transmit to network (from CSU) |
All other pins are not connected.
BRI
This cable is a straight-through 8-conductor cable with
RJ45 male ends.
| Pin |
TE |
NT |
Polarity |
| 3 |
Transmit |
Receive |
+ |
| 4 |
Receive |
Transmit |
+ |
| 5 |
Receive |
Transmit |
- |
| 6 |
Transmit |
Receive |
- |
All other pins are not connected.