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by juami
Mon Jan 10, 2022 11:29 am
Forum: PC 486SX (ao486)
Topic: RetroWave OPL3 Sound Card (USB/SPI) with ao486? (Similar to External MT32-PI?)
Replies: 11
Views: 12434

Re: RetroWave OPL3 Sound Card (USB/SPI) with ao486? (Similar to External MT32-PI?)

Mister could handle Retrowave OPL directly without RPi.
Retrowave uses simple SPI control with /CS. ( it uses MCP23S17 IO expander to control YMF262 )
we need to change User Port of Mister into 4 line SPI ( CLK,MISO,MOSI,/CS ).
SPI protocol is simple ( we can find protocol info from Retrowave github source code and DOSBOX-X code )