VBA-RR v24 doesn't update sound registers well

[GoogleCodeExporter]

Q. What steps will reproduce the problem?

1. Open Metroid II and hear the first Overworld song with v24. (I think you can 
choose any GBx games/songs you like)
2. Open Memory Viewer and see NR13 (0xff13). It must change when frequency is 
changed, but it doesn't change at all. Some other registers are dumb as well.

Q. What is the expected output? What do you see instead?

See above. v23 and VBA-M works well. I think this is an obvious bug.
As a result, Lua sound.get() function doesn't work for GBx games.

Original issue reported on code.google.com by gochaism on 20 Mar 2013 at 7:53

[GoogleCodeExporter]

This is a relic artifact of the old vba sound core, vba-m doesn't have it 
because it uses blarggs gbapu.

Original comment by [email protected] on 10 May 2013 at 5:47