So I did some testing with the fba core and the mame2003 core. Here are some issues I've run into, can anyone verify some of these? The more the better. Just lemme know if you had the same issues or got them working where they didn't work for me. Thanks.
FBA
not working at all:
bonks adventure arcade - doesnt work in fba or mame2003
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sega Y board games: broken grafx(looks like it went through a paper shreader)
galaxy force 2 - also has joystick issues, and i cant seem to shoot
g-loc - same joystick issues as galaxy force 2, but you can shoot
power drift - just the shreaded grafx
strike fighter - same as g-loc
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super monaco gp - broken grafx
night striker - same joystick issues as g-loc, some grafx glitches, doesnt work in mame
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MAME
dbz2 - has minor grafx glitches
lucky and wild - cant aim to fire. some grafx glitches
mk2-3 - works perfect but has low volume
ninja baseball batman - bad audio, some grafx glitches
primal rage - loads, way too slow(probably will never be fullspeed), has some grafx glitches
mk3u - runs great, has minor grafx glitches
crusnusa - asks to hit enter key to proceed, cant assign key though
sonic arcade - suggest trying "sonicp" rom instead, which crashes mame
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system 32: not loading at all(maybe mame2003 doesnt support system32/multi32?)
alien3
dbzvrvs
ga2
gaxeduel
rad mobile
rad rally
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system multi 32: not loading
outrunners
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konami gx hardware: not loading
Salamander2
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Also does anyone know if mame2003 supports the Midway V unit hardware? Thanks again!