Famicom expansion port pinout: Difference between revisions

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(Just using the information at http://nesdev.parodius.com/ffpa.txt)
 
(add signal descriptions. Remove egregious amount of whitespace at the end of lines)
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==Pinout of 15-pin Famicom expansion port==
==Pinout of 15-pin Famicom expansion port==
               /\
               /\
             |  \
             |  \
         GND | 01  \
         GND | 01  \
             |  09 | /OE for joypad 2
             |  09 | /OE for joypad 2
       SOUND | 02  |
       SOUND | 02  |
             |  10 | out 2 ($4016.2)
             |  10 | out 2 ($4016.2)
         IRQ | 03  |
         IRQ | 03  |
             |  11 | out 1 ($4016.1)
             |  11 | out 1 ($4016.1)
  joypad 2 D4 | 04  |
  joypad 2 D4 | 04  |
             |  12 | out 0 ($4016.0, Strobe)
             |  12 | out 0 ($4016.0, Strobe)
  joypad 2 D3 | 05  |
  joypad 2 D3 | 05  |
             |  13 | joypad 1 D1
             |  13 | joypad 1 D1
  joypad 2 D2 | 06  |
  joypad 2 D2 | 06  |
             |  14 | /OE for joypad 1
             |  14 | /OE for joypad 1
  joypad 2 D1 | 07  |
  joypad 2 D1 | 07  |
             |  15 | +5V
             |  15 | +5V
  joypad 2 D0 | 08  /
  joypad 2 D0 | 08  /
             |  /
             |  /
               \/
               \/
===Signal descriptions===
;Digital inputs to the Famicom:Joypad 1 D1, Joypad 2 D0…D4
;Digital outputs from the Famicom:Out 0, 1, 2; /OE for both joypads
;Open-collector bidirectional: IRQ
;Analog outputs: SOUND (before expansion audio is mixed in)

Revision as of 20:03, 11 March 2013

Pinout of 15-pin Famicom expansion port

             /\
            |   \
        GND | 01  \
            |   09 | /OE for joypad 2
      SOUND | 02   |
            |   10 | out 2 ($4016.2)
        IRQ | 03   |
            |   11 | out 1 ($4016.1)
joypad 2 D4 | 04   |
            |   12 | out 0 ($4016.0, Strobe)
joypad 2 D3 | 05   |
            |   13 | joypad 1 D1
joypad 2 D2 | 06   |
            |   14 | /OE for joypad 1
joypad 2 D1 | 07   |
            |   15 | +5V
joypad 2 D0 | 08  /
            |   /
             \/

Signal descriptions

Digital inputs to the Famicom
Joypad 1 D1, Joypad 2 D0…D4
Digital outputs from the Famicom
Out 0, 1, 2; /OE for both joypads
Open-collector bidirectional
IRQ
Analog outputs
SOUND (before expansion audio is mixed in)