Guide to computer cables
Results 1 to 10 of 10

Thread: Guide to computer cables

  1. #1
    Senior Member
    Join Date
    Oct 2001
    Posts
    255

    Guide to computer cables

    source: http://www.anticrack.de/modules.php?...rder=0&thold=0

    POWER SUPPLY CONNECTORS -

    Typical Power Supply has 6 Connectors: 2 ea. - 6 pin for
    Motherboard Power and 4 ea. - 4 pin for Disk Drive Power.


    Motherboard Power Connectors
    P8 P9
    Pin Signal Pin Signal
    ----------------------------- ---------------------------
    1 - Power Good 1 - GND
    2 - +5v (or N.C.) 2 - GND
    3 - +12v 3 - -5v
    4 - -12v 4 - +5v
    5 - GND 5 - +5v
    6 - GND 6 - +5v


    Disk Drive Power Connectors (4 - 4 pin)

    Pin Signal
    -----------------------------
    1 - +12v
    2 - GND
    3 - GND
    4 - +5v



    MOTHERBOARD CONNECTORS -

    Motherboards have various combinations of connectors depending
    on design type and built-in facilities. These will be found in a
    typical clone.


    Backup Battery Connector (AT only)

    Pin Signal
    -----------------------------
    1 - Batt+
    2 - [KEY]
    3 - GND
    4 - GND


    LED Power and Key Lock (AT only)

    Pin Signal
    -----------------------------
    1 - LED power
    2 - GND
    3 - GND
    4 - Key Switch
    5 - GND


    Speaker Connector

    Pin Signal
    -----------------------------
    1 - -Speaker
    2 - [KEY]
    3 - GND
    4 - +Speaker +5v


    Turbo Indicator Connector

    Used only on Turbo switchable machines. Safest Connector on
    the machines that have it; can't be connected backwards!

    Pin Signal
    -----------------------------
    1 - +5v
    2 - *HIGH SPEED
    3 - +5v


    MOTHERBOARD I/O CARD EXPANSION SLOTS

    Not exactly for cabling, but a good reference anyway.

    8-bit slots (PC/XT/AT)

    COMPONENT SIDE NON-COMPONENT SIDE

    Pin Signal Pin Signal
    --------------- ---------------
    A1 -I/O CH CLK B1 GND
    A2 SD7 B2 RESET DRV
    A3 SD6 B3 +5v
    A4 SD5 B4 IRQ 9
    A5 SD4 B5 -5v
    A6 SD3 B6 DRQ 2
    A7 SD2 B7 -12v
    A8 SD1 B8 Reserved / OWS
    A9 SD0 B9 +12v
    A10 -I/O CH RDY B10 GND
    A11 AEN B11 -SMEMW
    A12 SA19 B12 -SMEMR
    A13 SA18 B13 -IOW
    A14 SA17 B14 -IOR
    A15 SA16 B15 -DACK3
    A16 SA15 B16 DRQ3
    A17 SA14 B17 -DACK1
    A18 SA13 B18 DRQ1
    A19 SA12 B19 -REFRESH
    A20 SA11 B20 CLK
    A21 SA10 B21 IRQ7
    A22 SA9 B22 IRQ6
    A23 SA8 B23 IRQ5
    A24 SA7 B24 IRQ4
    A25 SA6 B25 IRQ3
    A26 SA5 B26 -DACK2
    A27 SA4 B27 T/C
    A28 SA3 B28 BALE
    A29 SA2 B29 +5v
    A30 SA1 B30 OSC
    A31 SA0 B31 GND


    Motherbaord Expansion slots continued...

    16-bit Slots (AT only)

    COMPONENT SIDE NON-COMPONENT SIDE

    Pin Signal Pin Signal
    --------------- ---------------
    C1 SBHE D1 -MEM CS16
    C2 LA23 D2 -I/O CS16
    C3 LA22 D3 IRQ10
    C4 LA21 D4 IRQ11
    C5 LA20 D5 IRQ12
    C6 LA19 D6 IRQ13
    C7 LA18 D7 IRQ14
    C8 LA17 D8 -DACK0
    C9 -MEMR D9 DRQ0
    C10 -MEMW D10 -DACK5
    C11 SD08 D11 DRQ5
    C12 SD09 D12 -DACK6
    C13 SD10 D13 DRQ6
    C14 SD11 D14 -DACK7
    C15 SD12 D15 DRQ7
    C16 SD13 D16 +5v
    C17 SD14 D17 -MASTER
    C18 SD15 D18 GND



    Keyboard Connector

    Pin Signal
    -----------------------------
    1 - KBD CLK OUT
    2 - KBD SERIAL OUT
    3 - KBD RESET IN
    4 - KBD GND
    5 - KBD +5v




    FLOPPY DISK CABLES -

    Floppy / Hard Drive Power Connectors

    Pin Signal
    -----------------------------
    1 - +12v
    2 - GND
    3 - GND
    4 - +5v

    Floppy Disk Drive Interface Cable

    Pin Signal Pin Signal
    -------------------------------------------------------------
    1 - GND 2 - N/C
    3 - GND 4 - N/C
    5 - GND 6 - N/C
    7 - GND 8 - Index
    9 - GND 10 - Motor Enable A
    11 - GND 12 - Drive Select B
    13 - GND 14 - Drive Select A
    15 - GND 16 - Motor Enable B
    17 - GND 18 - Stepper Direction
    19 - GND 20 - Step Pulse
    21 - GND 22 - Write Data
    23 - GND 24 - Write Enable
    25 - GND 26 - Track 0
    27 - GND 28 - Write Protect
    29 - GND 30 - Read Data
    31 - GND 32 - Select Head 1
    33 - GND 34 - (Spare)



    HARD DISK CABLES -

    ST-506 Hard Disk Drive Control/Data Cables


    Floppy / Hard Drive Power Connectors

    Pin Signal
    -----------------------------
    1 - +12v
    2 - GND
    3 - GND
    4 - +5v


    ST-506 Control Cable

    Pin Signal Pin Signal
    -------------------------------------------------------------
    1 - Head Select 8 2 - GND
    3 - Head Select 4 4 - GND
    5 - Write Gate 6 - GND
    7 - Seek Complete 8 - GND
    9 - Track 0 10 - GND
    11 - Write Default 12 - GND
    13 - Head Select 1 14 - GND
    15 - Reserved 16 - GND
    17 - Head Select 2 18 - GND
    19 - Index 20 - GND
    21 - Ready 22 - GND
    23 - Step 24 - GND
    25 - Drive Select 1 26 - GND
    27 - Drive Select 2 28 - GND
    29 - Drive Select 3 30 - GND
    31 - Drive Select 4 32 - GND
    33 - Direction In 34 - GND

    ST-506 Data Cable

    Pin Signal Pin Signal
    -------------------------------------------------------------
    1 - Drive Selected 2 - GND
    3 - Reserved 4 - GND
    5 - Reserved 6 - GND
    7 - Reserved 8 - GND
    9 - Reserved 10 - GND
    11 - GND 12 - GND
    13 - MFM Write Data+ 14 - MFM Write Data-
    15 - GND 16 - GND
    17 - MFM Read Data+ 18 - MFM Read Data-
    19 - GND 20 - GND


    ESDI Hard Disk Drive Control/Data Cables

    ESDI Control Cable

    Pin Signal Pin Signal
    -------------------------------------------------------------
    1 - Head Select 3 2 - GND
    3 - Head Select 2 4 - GND
    5 - Write Gate 6 - GND
    7 - Config/Status Data 8 - GND
    9 - Transfer Ack. 10 - GND
    11 - Attention 12 - GND
    13 - Head Select 0 14 - GND
    15 - Sec/Addr Mark Find 16 - GND
    17 - Head Select 1 18 - GND
    19 - Index 20 - GND
    21 - Ready 22 - GND
    23 - Transfer Request 24 - GND
    25 - Drive Select 1 26 - GND
    27 - Drive Select 2 28 - GND
    29 - Drive Select 3 30 - GND
    31 - Read Gate 32 - GND
    33 - Command Data 34 - GND

    ESDI Data Cable

    Pin Signal Pin Signal
    -------------------------------------------------------------
    1 - Drive Selected 2 - Sec/Addr Mark Found
    3 - Seek Completed 4 - Address Mark Enable
    5 - Reserved/Step Mode 6 - GND
    7 - Write Clock+ 8 - Write Clock-
    9 - Cartridge Changed 10 - Read Ref. Clock+
    11 - Read Ref. Clock- 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 - Index


    SCSI Hard Disk Drive Interface Cable

    Pin Signal Pin Signal
    -------------------------------------------------------------
    1 - GND 2 - Data Line 0
    3 - GND 4 - Data Line 1
    5 - GND 6 - Data Line 2
    7 - GND 8 - Data Line 3
    9 - GND 10 - Data Line 4
    11 - GND 12 - Data Line 5
    13 - GND 14 - Data Line 6
    15 - GND 16 - Data Line 7
    17 - GND 18 - Data Parity Line
    19 - GND 20 - GND
    21 - GND 22 - GND
    23 - GND 24 - GND
    25 - N/C 26 - Terminator Power
    27 - GND 28 - GND
    29 - GND 30 - GND
    31 - GND 32 - Attention
    33 - GND 34 - GND
    35 - GND 36 - Busy
    37 - GND 38 - Acknowledge
    39 - GND 40 - Reset
    41 - GND 42 - Message
    43 - GND 44 - Select
    45 - GND 46 - C/D
    47 - GND 48 - Request
    49 - GND 50 - I/O



    DISPLAY ADAPTOR CONNECTORS -


    Monochrome (MDA), Hercules, Color (CGA) Adaptors
    Connector type - DB-9

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 GND 6 Intensity
    2 GND 7 Video *
    3 N/C or RED 8 Horizontal Drive
    4 N/C or GREEN 9 Vertical Drive
    5 N/C or BLUE

    * NTSC Video on some clone boards


    EGA Adaptor
    Connector Type - DB-9

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 GND 6 Secondary Green / Intensity
    2 Secondary Red 7 Secondary Blue / Mono Video
    3 Primary Red 8 Horizontal Drive
    4 Primary Green 9 Vertical Drive
    5 Primary Blue


    VGA Adaptor
    Connector Type - DB-15

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 Red Video 9 [KEY]
    2 Green Video 10 Sync GND
    3 Blue Video 11 Monitor ID - Bit 1
    4 - Monitor ID - Bit 2 12 Monitor ID - Bit 0
    5 - GND 13 Horizontal Sync
    6 - Red GND 14 Vertical Sync
    7 - Green GND 15 N/C (Reserved)
    8 - Blue GND



    PARALLEL PRINTER PORT

    I/O Mapping
    --------------------------
    LPT1: $378-37A
    LPT2: $278-27A

    DB-25 Connector (Computer End)

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 *STROBE 14 *Auto Feed
    2 Data Bit 0 15 *Error
    3 Data Bit 1 16 *Initialize Printer
    4 Data Bit 2 17 *Select Input
    5 Data Bit 3 18 GND
    6 Data Bit 4 19 GND
    7 Data Bit 5 20 GND
    8 Data Bit 6 21 GND
    9 Data Bit 7 22 GND
    10 *Acknowledge 23 GND
    11 Busy 24 GND
    12 Paper Out 25 GND
    13 Select


    Centronics 36 pin Connector (Printer End)

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 *STROBE 19 GND
    2 Data Bit 0 20 GND
    3 Data Bit 1 21 GND
    4 Data Bit 2 22 GND
    5 Data Bit 3 23 GND
    6 Data Bit 4 24 GND
    7 Data Bit 5 25 GND
    8 Data Bit 6 26 GND
    9 Data Bit 7 27 GND
    10 *Acknowledge 28 GND
    11 Busy 29 GND
    12 Paper Out 30 GND
    13 Select 31 *Prime
    14 *Auto Feed XT 32 *Error
    15 {OSCXT} 33 Signal GND
    16 Signal GND 34 N/C
    17 Frame GND 35 N/C
    18 +5v 36 N/C



    SERIAL PORTS

    NOTE: The IBM PC uses a DTE (Data Terminal Equipment) Connection
    standard. Most Modems are DCE (Data Communication Equipment).


    I/O Map
    -----------------------------
    COM1: $3F8-3FF
    COM2: $2F8-2FF
    COM3: $3E8-3EF
    COM4: $2E8-2EF


    DB-9 Connector

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 CD Carrier Detect 6 DSR Data Set Ready
    2 RXD Receive Data 7 RTS Request to Send
    3 TXD Transmit Data 8 CTS Clear to Send
    4 DTR Data Term. Ready 9 RI Ring Indicator
    5 GND Signal GND


    DB-25 Connector

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 GND Ground / Shield 14 {2nd TXD}
    2 TXD Transmit Data 15 Transmit Clock
    3 RXD Received Data 16 {2nd Rec. Clock}
    4 RTS Request to Send 17 {Receive Clock}
    5 CTS Clear to Send 18 {Unassigned}
    6 DSR Data Set Ready 19 {2nd RTS}
    7 GND Ground 20 DTR Data Term Ready
    8 DCD Carrier Detect 21 {Sig. Quality}
    9 {Reserved} 22 RI Ring Indicator
    10 {Reserved} 23 {Data Rate Sel.}
    11 {Unassigned} 24 {Transmit Clock}
    12 {2nd CD} 25 {Unassigned}
    13 {2nd CTS}



    NULL MODEM CONNECTION-

    RS-232 Definition Computer/Terminal Modem
    Signal DTE DCE
    9-pin 25-pin 25-pin
    -------------------------------------------------------------------
    GND Signal GND 5 1 1
    TXD Transmit Data 3 2 3
    RXD Receive Data 2 3 2
    RTS Req. to Send 7 4 5
    CTS Clear to Send 8 5 4
    DSR Data Set Ready 6 6 20
    GND Chassis GND - 7 7
    CD Carrier Detect 1 8 8
    DTR Data Term. Ready 4 20 6


    DTE DCE

    1 컴컴컴컴컴컴컴컴컴컴퀼 1

    2 컴컴컴컴컴 旼컴퀼 2
    旼컴퀼뇝컴컴
    3 컴컴 읕컴컴컴컴퀼 3

    4 컴컴컴컴컴 旼컴퀼 4
    旼컴퀼뇝컴컴
    5 컴컴 읕컴컴컴컴퀼 5

    6 컴컴컴컴컴 旼컴퀼 6

    7 컴컴컴컴퀼뇝컴퀼뇝컴퀼 7
    旼컴퀼뇝컴컴
    8 컴퀼뇝컴퀼뇝컴컴컴컴퀼 8

    20 컴컴 읕컴컴컴컴퀼 20



    GAME CONNECTOR

    DB-15 Connector

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 +5v 9 +5v
    2 Button 1-1 10 Button 2-1
    3 X1 11 X2
    4 GND 12 GND
    5 GND 13 Y2
    6 Y1 14 Button 2-2
    7 Button 1-2 15 N/C
    8 N/C


    Buttons - Connect from GND to Button inputs
    X and Y pots connect from +5v to X-Y inputs.



    JOYSTICK CONNECTOR

    DB-9 Connector

    Pin Signal Pin Signal
    -------------------------------------------------------------------
    1 JOY0 6 Fire Button
    2 JOY1 7 +5v
    3 JOY2 8 GND
    4 JOY3 9 POT X
    5 POT Y










    All logos and trademarks in this site are property of their respective owner. The comments and articles are property of their posters, all the rest 2001,2002 by AntiCrack-Deutschland.
    You can syndicate our news using the file backend.php or ultramode.txt .
    Copyright 2001,2002 AntiCrack-Deutschland, all rights reserved. This information must not be duplicated or reproduced without express written permission by the operator of this web site. This information must only be used for educational purposes. It must not be used to pirate software or encourage software piracy or to engage in any illegal activity. All instructions are provided as-is and are not supported by either the software producers or the owners or operators of this web site or anyone else for that matter. Before using any of these licensing techniques you must first get approval from the softare producer and/or have already purchased this software. Please refer to the Disclaimer for more information.
    http://www.attrition.org/gallery/computing/forum/tn/youarenot.gif.html

  2. #2
    AntiOnline Senior Member souleman's Avatar
    Join Date
    Oct 2001
    Location
    Flint, MI
    Posts
    2,884
    ummm, I got a headache now..... nice post, though I don't see a lot of use for most people. Its almost cheaper to buy cables then to make them now..
    \"Ignorance is bliss....
    but only for your enemy\"
    -- souleman

  3. #3
    Senior Member
    Join Date
    Dec 2001
    Posts
    119
    Ok Preep, you get a punch in the stomach for that one

  4. #4
    Member
    Join Date
    Sep 2001
    Posts
    36
    Yeah, i could be usefull... thanks
    [blur]On a toujours besoin d\'un plus petit que soi. [/blur]
    French diction

  5. #5
    Member
    Join Date
    May 2002
    Posts
    82
    ummm, I got a headache now..... nice post, though I don't see a lot of use for most people. Its almost cheaper to buy cables then to make them now..
    I don't know, souleman... I've always felt that a good knowledge of the hardware was key in helping to better understand the software side of it. Then again... I have to admit that I was tinkering with resistors and capacitors as soon as the TI-99/4A came out (taking something like that apart and hearing dad say (as opposed to "What the Hell are you doing?!?!?") "it's not so complicated... Just a bunch of little stuff working together" can leave quite an impression on a kid). I guess I've always had a unique interest in the electronics side of it though, so it may just be me.

    Rev


    Research ---> Knowledge ---> Experience ---> Wisdom

    We all strive for it in one way or another.
    Many will ask, \"Where do you want to go today?\" because they\'re still scratching for ideas.

    With *NIX, there\'s already a way. The sum of us just need roadmaps to get there.

  6. #6
    Senior Member
    Join Date
    Oct 2001
    Posts
    255
    thank you jazzman, its good someone appreciates it, if ppl didnt "tinker" they wouldnt learn, im in the process of making a cable for my nokia mobile phone, so i can download my sms and add some gfx, andthose cables cost quite allot.

    Preep
    http://www.attrition.org/gallery/computing/forum/tn/youarenot.gif.html

  7. #7
    Senior Member
    Join Date
    Dec 2001
    Posts
    243
    seems a bit much to take in without pictures, I already understand some of the wiring making a baybus and stuff. but thanks for taking the time to show people.
    Search First Ask Second. www.google.com

  8. #8
    TechieChick
    Guest
    Thanks Preep, I'm of the school of thought that the more you know the better off you are. While I may not be making my own cables (patch and crossover aside) it's extremely helpful to know proper pinouts becouse you'd be amazed how often I've run across cables that are wrong and you'll save yourself a lot of time just by knowing what should be.

  9. #9
    Senior Member
    Join Date
    Oct 2001
    Posts
    255
    i had to learn the layout/structure of an rs232 cable in college, and couldnt find anything like that sadly.

    preep
    http://www.attrition.org/gallery/computing/forum/tn/youarenot.gif.html

  10. #10
    Senior Member
    Join Date
    Feb 2002
    Posts
    1,210
    it's a nice list.. but missing one cable that i still use to link up with real old boxes
    either running laplink software or using the old dos interlnk/intersvr commands.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

 Security News

     Patches

       Security Trends

         How-To

           Buying Guides