Keatah, on Sat Mar 26, 2011 9:43 PM, said:
Well I downloaded the latest mame, and it STILL ISN'T WORKING despite it saying Mr. Giles modernized the LIBERATOR driver. So to hell with that shit! I decided *NOT* to wait any longer.
Therein lies the issue.. the problem with this bug isn't in the driver itself, but in a component which the game uses.
The bug report itself has some answers as there was some research done last year to determine that it's an issue with the sound chip implementation. The second note states pretty well what the issue appears to be.
It's a matter a finding someone who knows the chip well to be able to come up with a solution which doesn't break other games (in this case, Tempest doesn't work at all with the reverted code). I have no doubt that someday it will be fixed.
You've found a solution in your case - but to get upset at people for not being able to fix a regression is a bit disheartening, to be honest. I often use DOSBOX as well and have found it to be more than adequate for a even a marginally obsolete machine to allow playing old MAME versions without issues. Very useful for regression testing as some bugs have been around for well over a decade.