Serial 9 Pin (PC)Back to Contents

(9p D-SUB male at PC (DTE))

(9p D-SUB female at cable / mouse (DCE))Pin Name Dir 1 2 3 4 5 6 7 8 9 CD RXD TXD DTR GND DSR RTS CTS RI Description CarrierDetect Receive Data Transmit Data Data Terminal Ready SystemGround Data Set Ready RequesttoSend Clear toSend Ring Indicator

Direction seen from PC (TX/RX)

Serial 25 Pin (PC)Back to Contents

(25p D-SUB male at PC (DTE))

(25p D-SUB female at cable / modem (DCE))Pin 1 2 Name SHIELD TXD Dir Description ShieldGround Transmit Data

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

RXD RTS CTS DSR GND CD n/c n/c n/c n/c n/c n/c n/c n/c n/c n/c n/c DTR n/c RI n/c n/c n/c

Receive Data RequesttoSend Clear toSend Data Set Ready SystemGround CarrierDetect

Data Terminal Ready

Ring Indicator

Direction seen from PC (TX/RX) DO NOT connect SHIELD (1) with GND (7) !

Parallel (PC)Back to Contents

(25p D-SUB female at PC)

(25p D-SUB male at parallel-cable)Pin 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 Name STR D0 D1 D2 D3 D4 D5 D6 D7 ACK BUSY PE SEL AUTFD ERR INIT SEL IN GND GND GND GND GND GND GND GND Dir Description Strobe Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 Acknowledge Busy PaperEmpty Select Autofeed Error Register Bit in Register (7=MSB, 0=LSB) BASE+2 BASE BASE BASE BASE BASE BASE BASE BASE BASE+1 BASE+1 BASE+1 BASE+1 BASE+2 BASE+1 0 (inverted) 0 1 2 3 4 5 6 7 6 7 (inverted) 5 4 1 (inverted) 3 2 3

Initialize / Reset BASE+2 Select Input SignalGround SignalGround SignalGround SignalGround SignalGround SignalGround SignalGround SignalGround BASE+2

Direction seen from PC (TX/RX) BASE means the base-address of the connection ( normally 378h for LPT1 and 278h for LPT2 ). BASE+1 is known as status-register, BASE+2 as control-register.

Above address 0000:0408h there is a WORD-value for each installed parallelport.

Centronics (Printer)Back to Contents

(36p Centronics female at printer)

(36p Centronics male at printer cable)Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 STR D0 D1 D2 D3 D4 D5 D6 D7 ACK BUSY PE SEL AUTFD n/c 0V CHASSIS GND +5 V PULL UP GND +5 V DC (50 mAmax) SignalGround ? Name Dir Strobe Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 Acknowledge Busy PaperEmpty Select Autofeed Description

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

GND GND GND GND GND GND GND GND GND GND GNDRESET RESET ERROR 0V n/c +5 V SEL IN

SignalGround SignalGround SignalGround SignalGround SignalGround SignalGround SignalGround SignalGround SignalGround SignalGround ResetGround Reset Lowwhen offline SignalGround +5 V DC Select In (Taking low or high sets printer on line or off line respectively)

DirectionseenformPrinter.

PC Gameport / MIDIBack to Contents

(15p D-SUB female at PC)

(15p D-SUB male at cable / joystick)Pin 1 2 3 B1 X1 Name +5V Dir Description +5 VDC Button 1 Joystick 1 - X

4 5 6 7 8 9 10 11 12 13 14 15

GND GND Y1 B2 +5V +5V B4 X2 MIDI_TXD Y2 B3 MIDI_RXD

Ground Ground Joystick 1 - Y Button 2 +5 VDC +5 VDC Button 4 Joystick 2 - X MIDI Transmit Joystick 2 - Y Button 3 MIDI Receive

Direction seen from PC (TX/RX)

Keyboard 5 Pin (PC)Back to Contents

(5p DIN 41524 female at PC)

(5p DIN 41524 male at cable / keyboard)Pin 1 2 3 4 5 Name DATA n/c GND VCC Description Data Ground +5 VDC Comment CLK/CTS, Open-collector RxD/TxD/RTS, Open-collector

CLOCK Clock

Notconnected Reset on some very old keyboards.

Keyboard 6 Pin (PS/2)Back to Contents

(6p Mini-DIN female (PS/2) at PC)

(6p Mini-DIN male at cable / keyboard)Pin Name Dir 1 2 3 4 5 6 DATA n/c GND VCC CLK n/c Description Key Data Notconnected Gnd Power , +5 VDC Clock Notconnected

Direction seen from PC (TX/RX)

VGABack to Contents

(15p HIGH DENSITY D-SUB female at videocard)

(15p HIGH DENSITY D-SUB male at cable / monitor)Pin 1 2 3 4 5 6 7 RED GREEN BLUE ID2 GND RGND GGND Name Dir Description Red Video (75 Ohm, 0.7 V p-p) Green Video (75 Ohm, 0.7 V p-p) Blue Video (75 Ohm, 0.7 V p-p) Monitor ID Bit 2 Ground Red Ground Green Ground

8 9 10 11 12 13 14 15

BGND KEY SGND ID0 ID1 or SDA HSYNC or CSYNC VSYNC ID3 or SCL

Blue Ground Key (No pin) SyncGround Monitor ID Bit 0 Monitor ID Bit 1 Horizontal Sync (or Composite Sync) Vertical Sync Monitor ID Bit 3

Direction seen from PC / Videocard (TX/RX)

SCARTBack to Contents

(21p SCART female at TV / Video)

(21p SCART male at cable)Pin 1 2 3 4 5 6 7 8 9 10 11 Name AOR AIR AOL AGND B GND AIL B SWTCH G GND CLKOUT G Description Audio OutRight Audio In Right Audio OutLeft + Mono Audio Ground RGB Blue Ground Audio In Left + Mono RGB Blue In Audio/RGB switch / 16:9 RGB Green Ground Data 2: ClockpulseOut (Unavailable ??) RGB Green In 0.7 V 75 Ohm 0.5 V RMS 0.7 V >10k Ohm 75 Ohm SignalLevel 0.5 V RMS 0.5 V RMS 0.5 V RMS Impedanz 10k Ohm