PSX controler to PC MIDI converter

[JAPANESE]

introduction

Let's play PC games on PSX PAD!

Schematics

converter uses PIC16F84 controler chip and 5 volt power driven. PlayStaion is 3.3 volt, it will no problem?? ha ha ha..

Schematic Diagram




Assemble

photo snaps



we will can not get PlayStation type female connectors. I recommended that cut the PS controler extention cable.

parts list

IC       PIC16F84-10         1       800yen
XTAL     8.000MHz ceramic    1        30
LED      TLG104 or           1        10
C        0.1uF               1        10
R        330 ohm             1        10
         2.2K ohm            1        10
         1K ohm              2        20
Universal PCB
         ICB-90 or           1        90
wire     4 lines             1m      150
connectors
         15P D-SUB male+case 1       190
         PS extention cable  2m      600
case     SW-55 or            1       100
etc.     gum bush            3        30
                            ---------------------------
                            total  2,050yen

PCB artwork





Operation and Specifications

the converter makes MIDI code from PSX pad data.

the converter can change convertion mode at key push down with power up. with START button on any controler, into MIDI Exclusive dump mode. with the "X" mark button on standard controler, into liner(all) key mapped mode. with the squere mark button on standard controler, into the TypeMania compatible mode.

LED has four times blink, if mode reset was successful. reseted mode is write to NV memory.

and the LED mark means when sending MIDI data.





• TypeMania compatible mode(default)

  [1P]
  Playstaion key         MIDI information
  -----------------------------------------
  UP                   Control Change #0x42, value 0x7f(when release button 0x00)
  DOWN                 Control Change #0x42, value 0x7f(when release 0x00)
  SQUEARE              NOTE ON #0x3c(note C3), when release button: NOTE OFF
  CROSS                NOTE ON #0x3d(note C#3)
  CIRCLE               NOTE ON #0x3e(note D3)
  L1                   NOTE ON #0x3f(note D#3)
  R1                   NOTE ON #0x40(noteE3)
  
  [2P]
  Playstaion key         MIDI information
  -----------------------------------------
  UP                   Control Change #0x40, value 0x7f(when release button 0x00)
  DOWN                 Control Change #0x40, value 0x7f(when release 0x00)
  SQUARE               NOTE ON #0x48(note C4), release: NOTE OFF
  CROSS                NOTE ON #0x49(note C#4)
  CIRCLE               NOTE ON #0x4a(note D4)
  L1                   NOTE ON #0x4b(note D#4)
  R1                   NOTE ON #0x4c(note E4)
  

• linear(all) key mapped mode(power up with "CROSS" key)

  [1P]
  NOTE ON mapped from note C3
  @@L2, R2, L1, R1, Triangle, Circle, Cross, Square, 
  @@SELECT, none, none, Start, Up, Right, Down, Left
  
  [2P]
  NOTE ON mapped from note C5
  @@L2, R2, L1, R1, Triangle, Circle, Cross, Square, 
  @@SELECT, none, none, Start, Up, Right, Down, Left
  

• MIDI Exclusive dump mode(with "Start" Key)

  +00       0xf0      MIDI Exclusive ID   
  +01       0x00      maker ID
  +02   1P data[0](bit0 - bit6)
  +03   1P data[2]
  +04   1P data[3]
  +05   1P data[4]
  +06   1P data[5]
  +07   1P data[6]
  +08   1P data[7]
  +09   1P data[0`7] bit7 *1
  +0A   2P data[0](bit0 - bit6)
  +0B   2P data[2]
  +0C   2P data[3]
  +0D   2P data[4]
  +0E   2P data[5]
  +0F   2P data[6]
  +10   2P data[7]
  +11   2P data[0`7] bit7 *1
  +12       0xf7     End of Exclusive
  
  *1 contents of offset+09 and +11
  
  | b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 |
  +----+----+----+----+----+----+----+----+
    0   [7]  [6]  [5]  [4]  [3]  [2]  [0]
  
    all bit7 is collected output, so MIDI code is 7bit length.
  
  

Program list

• Version 1.0
  

  asm file
  lst file
  cod file
  

References

• PIC16/17 Microcontroller Data Book/Microchip Technology Inc. 1996/1997
• PSX controler PAD and memory card analyzed information / Mr.fujita

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