I am currently looking to figure out a way to determine which consoles, hopefully by serial number alone, have removable APU units.

Update - I found out from others that ALL snes units with 4 rubber feet on the bottom, definitely have the units. Snes systems that have only 2 rubber feet, and 2 plastic feet, don't have the units.

Highest Serial # with moduleLowest Serial # without module
JapanS10321639S23427480
North AmericaUN12639337UN14944982
EuropeNone recordedUP11261983
If any system you have, with a number higher than the ones listed, have a module, or any systems lower than the number listed, without a module, please email me at: (Read all of the characters horizontally.)
g d @ c a i s t h 2
d _ o o t i . c o m

Definitely email me the serial number, if you do have a european unit that has a removable module.

SNES APU Solder Side

SNES APU Component Side

APU pinouts

APU Interface schematics and programs available. (This version is specifically for the parallel port interface. If you are looking for the Arduino Interface version, Click this link instead. Source code to that version is linked further down.) Click Here.

    pins numbers as viewed from Component side.


          Top Edge of APU
       01 03 05 07 09 11 13 15 17 19 21 23
       02 04 06 08 10 12 14 16 18 20 22 24
          Components.
          Bottom Edge of APU
  1. PA7 - Pull Low
  2. PA6 - Pull High
  3. PA0 - Address 0
  4. PA1 - Address 1
  5. /WR
  6. /RD
  7. D0 \
  8. D1  \
  9. D2   \
  10. D3    \
  11. D4    / - Data lines
  12. D5   /
  13. D6  /
  14. D7 /
  15. /RESET
  16. Not Connected - Connect to Gnd
  17. SMPCK - external clock pulse - Frequency unknown
  18. Vcc
  19. Gnd
  20. Mute
  21. Audio Left
  22. Audio Right
  23. Gnd
  24. Audio Vcc

http://www.raphnet.net/electronique/snes_apu/snes_apu_en.php - Someone else built an interface.  Their interface has a headphone jack, as well as rca connections.  You can also get a linux port of Apuplay from there.


I have now constructed a PCB version of this interface, as well as another interface choice. Besides the parallel port, this interface can also be hooked up to an Arduino Diecimila or NG. For this interface, you will need the following software/firmware.
Software/Firmware, Source code (Updated Feb 1, 2012. Added support for Kevtris' Latest SPC2 spec.
* Added playlist, drag & drop, and autoplay.
* Now ALL com ports are searched for the interface before erroring out, if its not opened.)
Firmware is now included with the software. If you have previously uploaded the firmware for the older version, you must reupload it, since I changed the communication speeds from 56K to 112K.
Eagle Board File
Eagle Schematic File









Purchase PCB $12.00 CAD each

Purchase Kit (SNES APU module/connector not included.) (OUT OF STOCK)
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