I'm disassembling the ngpc bios using Ghidra and the ngpc loader
Thanks to this, I also found and extracted its own sound driver...which I'm also disassembling in parallel.
I browsed several open source emulators for informations but it's not explained how it works exactly.
For exemple, you have to activate a mode to direct access the t6w28 from the cpu.
the several sound drivers (like yours) don't use z80 irq nor nmi.
Btw, Your PSGLib is perfect for my current needs , thanks!
I only need to understand how this all works before blindly use it.
Thanks to this, I also found and extracted its own sound driver...which I'm also disassembling in parallel.
I browsed several open source emulators for informations but it's not explained how it works exactly.
For exemple, you have to activate a mode to direct access the t6w28 from the cpu.
the several sound drivers (like yours) don't use z80 irq nor nmi.
Btw, Your PSGLib is perfect for my current needs , thanks!
I only need to understand how this all works before blindly use it.