Hello there !
I try to understand the mysterious pin 31 "audio in" on the cartridge pinout for GB/C/A(SP).
Actually I only know about the nanoloop mono using it. But the nano loop mono says the internal jack out will not work on GBA(SP).
Does it mean the pin 31 is only wired up to the GBC and end with GBA ?
Then I found out about a MP3 player for GBA called Play-Yan. Does it decode the mp3 on an on-cartridge chip and forward the analogue signal to gba through pin 31 (which would mean pin31 is wired on GBA) ? Or does it decode MP3 on the GBA arm processor and audio chip ?
I try to understand the mysterious pin 31 "audio in" on the cartridge pinout for GB/C/A(SP).
Actually I only know about the nanoloop mono using it. But the nano loop mono says the internal jack out will not work on GBA(SP).
Does it mean the pin 31 is only wired up to the GBC and end with GBA ?
Then I found out about a MP3 player for GBA called Play-Yan. Does it decode the mp3 on an on-cartridge chip and forward the analogue signal to gba through pin 31 (which would mean pin31 is wired on GBA) ? Or does it decode MP3 on the GBA arm processor and audio chip ?