http://www.barryharris.me.uk/article_view.php?id=165
For a while, I haven't been happy with the M6502 core we are using. Most
drivers that use it require little hacks to make things work, and I firmly
believe that it is holding up adding sound to the DEC-0 driver as the IRQs
from the YM chip and the NMIs from the main CPU compete, which makes the YM
chip stop generating the IRQs, and hence no sound.
I have ported MAME's M6502 core to FB Alpha and tested it using the Renegade
driver. Currently all works as expected. I still need to spend time adding an
interface for the new core, and then porting all the affected drivers over,
before removing the old core.
Once that is done, I can look at sound in DEC-0 again.
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