Difference between revisions of "Connector:Analogue joystick (CPC Plus only)"

From CPCWiki - THE Amstrad CPC encyclopedia!
Jump to: navigation, search
(Created page with 'Analogue Joystick Port (15 Pin SUB-D, female) (CPC Plus only) The Analogue CPC+ Joystick port is somewhat similar to standard PC Joystick ports - with two important differences:…')
 
m
(22 intermediate revisions by 2 users not shown)
Line 1: Line 1:
Analogue Joystick Port (15 Pin SUB-D, female) (CPC Plus only)
+
[[Analog Joysticks| Analogue Joystick]] Port (15 Pin SUB-D, female) (CPC Plus only)
  
The Analogue CPC+ Joystick port is somewhat similar to standard PC Joystick ports - with two important differences:
+
The Analogue CPC+ Joystick port is somewhat similar to standard PC Joystick ports - with some important differences:
 
* 5V and GND are exchanged with each other, and,  
 
* 5V and GND are exchanged with each other, and,  
 
* on CPC+ the buttons must be connected to a "select" line (instead of to GND).
 
* on CPC+ the buttons must be connected to a "select" line (instead of to GND).
   Pin CPC+         PC
+
* The ADC hardware in the CPC works only with 180kΩ potentiometers (unlike the software counters in PCs, which works with different types, in range 10K...300kΩ, or so)
   1  Ground       +5V
+
'''Caution''' - there is no resistor in the supply lines - the 5V/GND pins connect directly to the computers '''2.4 Ampere''' power supply - so, there's a good chance that the CPCs reversed polarity will '''destroy''' any electronics (electrolyte capacitors, auto-fire circuits, etc) in connected PC joysticks.
   2  /Fire 1      Player 1 Fire 1
+
 
   3  X1           Player 1 X (lt/rt)
+
   Pin CPC+                   PC                     ________________________
   4  /Joystick 1  GND
+
   1  GND (Pot common)       +5V (Pot common)      |                        |
   5  +5V           GND
+
   2  /Fire1                  Player1.Fire1          | 8  7  6  5  4  3  2  1 |
   6  Y1           Player 1 Y (up/dn)
+
   3  X1                     Player1.PotX (lt/rt)   \ 15 14 13 12 11 10  9 /
   7  /Fire 2      Player 1 Fire 2
+
   4  /Stick1 (button common) GND (button common)      \____________________/
   8  Ground       +5V (Soundblaster: GND)
+
   5  +5V                     GND
   9  Ground       +5V
+
   6  Y1                     Player1.PotY (up/dn)
   10  /Fire 1      Player 2 Fire 1
+
   7  /Fire2                  Player1.Fire2
   11  X2           Player 2 X (lt/rt)
+
   8  GND (Pot common)       +5V (Soundblaster: GND)
   12  /Joystick 2  GND (Soundblaster: Midi TxD)
+
   9  GND (Pot common)       +5V
   13  Y2           Player 2 Y (up/dn)
+
   10  /Fire1                  Player2.Fire 1
   14  /Fire 2      Player 2 Fire 2
+
   11  X2                     Player2.PotX (lt/rt)
   15  Ground       +5V (Soundblaster: Midi RxD)
+
   12  /Stick2 (button common) GND (Soundblaster: Midi TxD)
* Two analogue joysticks could be connected by using an Y-cable. The Fire signals are the same as for the normal (digital) joystick port. Joystick 1 buttons should be connected to Pin 2,4,6, and joystick 2 buttons to Pin 10,12,14.
+
   13  Y2                     Player2.PotY (up/dn)
 +
   14  /Fire2                  Player2.Fire 2
 +
   15  GND (Pot common)       +5V (Soundblaster: Midi RxD)
 +
 
 +
* Two analogue joysticks could be connected by using an Y-cable. The Fire signals are the same as for the normal (digital) joystick port. Joystick 1 buttons should be connected to Pin 2,4,6, and joystick 2 buttons to Pin 10,12,14. Like the digital [[Joystick Y-cables]] the analog Y-cable should have '''diodes''' in the button lines (there are no diodes between pins 7+14 and 2+10 the mainboard).
 
* The A/D inputs have an input range of 0V (data = 00) to 2.5V (data = 3Fh), and an input impedance of 180k to Vcc.
 
* The A/D inputs have an input range of 0V (data = 00) to 2.5V (data = 3Fh), and an input impedance of 180k to Vcc.
 +
 +
==Softwares using Analog Joystick==
 +
 +
*[[Tennis Cup 2 ( Cartridge )]] allows player 2 to use Analog port.
 +
 +
==Compatible Models ==
 +
 +
*[[Amstrad Analogue Joystick AJ-5]]
 +
*[[Sinclair SPJ-1]]
 +
 +
[[Category:Peripherals]][[Category:CPC Internal Components]][[Category:CPC Plus|*]][[Category:Input Device]]

Revision as of 21:07, 14 June 2018

Analogue Joystick Port (15 Pin SUB-D, female) (CPC Plus only)

The Analogue CPC+ Joystick port is somewhat similar to standard PC Joystick ports - with some important differences:

  • 5V and GND are exchanged with each other, and,
  • on CPC+ the buttons must be connected to a "select" line (instead of to GND).
  • The ADC hardware in the CPC works only with 180kΩ potentiometers (unlike the software counters in PCs, which works with different types, in range 10K...300kΩ, or so)

Caution - there is no resistor in the supply lines - the 5V/GND pins connect directly to the computers 2.4 Ampere power supply - so, there's a good chance that the CPCs reversed polarity will destroy any electronics (electrolyte capacitors, auto-fire circuits, etc) in connected PC joysticks.

 Pin CPC+                    PC                      ________________________
 1   GND (Pot common)        +5V (Pot common)       |                        |
 2   /Fire1                  Player1.Fire1          | 8  7  6  5  4  3  2  1 |
 3   X1                      Player1.PotX (lt/rt)    \ 15 14 13 12 11 10  9 /
 4   /Stick1 (button common) GND (button common)      \____________________/
 5   +5V                     GND
 6   Y1                      Player1.PotY (up/dn)
 7   /Fire2                  Player1.Fire2
 8   GND (Pot common)        +5V (Soundblaster: GND)
 9   GND (Pot common)        +5V
 10  /Fire1                  Player2.Fire 1
 11  X2                      Player2.PotX (lt/rt)
 12  /Stick2 (button common) GND (Soundblaster: Midi TxD)
 13  Y2                      Player2.PotY (up/dn)
 14  /Fire2                  Player2.Fire 2
 15  GND (Pot common)        +5V (Soundblaster: Midi RxD)
  • Two analogue joysticks could be connected by using an Y-cable. The Fire signals are the same as for the normal (digital) joystick port. Joystick 1 buttons should be connected to Pin 2,4,6, and joystick 2 buttons to Pin 10,12,14. Like the digital Joystick Y-cables the analog Y-cable should have diodes in the button lines (there are no diodes between pins 7+14 and 2+10 the mainboard).
  • The A/D inputs have an input range of 0V (data = 00) to 2.5V (data = 3Fh), and an input impedance of 180k to Vcc.

Softwares using Analog Joystick

Compatible Models