Buzzer and volume in Emu
- smokku
Emu now emulates the X65 buzzer, controlled through the RIA register at $FFA8.
The buzzer state is visible in the emulator interface.
Programs using the system beep can now be heard in Emu too.
While working on it, I added SGU-1 master volume sliders to the interface.
One detail to remember when writing a player: SGU-1 starts muted after reset.
The master volume register, svc_master_vol, defaults to zero, so software
needs to set it before any sound will come out.