Here is a list for every new user of MAME. It contains all the (as far as I know) BIOS and device driver names that you will also need to play games. All filenames below are Zip files. Note : Subject to change. This list may be slightly out of date. However it will contain 99& or em if not better. If you know of more or I missed one, please add :)
22vp931
25pacman
bsmt2000
cchip
countrun
cyclshtg
filetto_cga
hd61830
jvs13551
k573_dio
k573mcr
k573msu
m1comm
m50458
m68705p3
m68705p5
m68705r3
microtouch
midcsd
midssio
mie
model1io
namco50
namco51
namco52
namco53
namco54
namco62
namcoc65
namcoc68
namcoc69
namcoc70
namcoc74
namcoc75
namcoc76
nmk004
pr8210
qsound_hle
s97269pb
sbugger
segabill
segadimm
sente6vb
simutrek
t5182
tetriskr_cga
tms32031
tms32032
votrsc01
votrsc01a
xt446
ym2413
ym2608
(All found in BDA)
These files if your new to mame can really cause you headaches, so get em all before downloading main roms.
ZX81v2