Garehard wrote on 2025-02-15, 13:07:

great Project, but i got with my SB Live only a high pitched sound. opl3 music is fine.
changed irq from 5 to 7, but that doesnt solve the problem. any ideas?

There might be a fix.

The SB Live/Audigy speed seems to depend on what value has been stored in the TIMER register. During SBEMU's test phase it has been given the value 0x200 ( that was found out just by trial and error ).
For SBEMU, the value has later been changed to 0x1A, for VSBHDA the value is still 0x200.

While fixing vsbhda for FastTracker 2, it has turned out that value 0x200 is problematic and value 0x1A makes the sound "too fast" (high pitched). A good compromise seems value 0x11A - both FastTracker 2 and TheDig sound ok with that.

I attached a little tool that displays SBLive/Audigy's current status, including the TIMER register.

You can experiment on your own, no need to recompile SBEMU/VSBHDA: with FD DEBUG you can change the value on the fly, for example with "OW B81A 11A" (assuming the Emu10kx base port is 0xB800).