that's what MAME is for. MAME has basically EVERY arcade game ever made.
all the roms you need are in the rom set for Defender.
google 'mame rom defender'
the first hit is the site you want.
navigate the site and download the roms from there.
if you can't figure it out tell me the location of the ROM and I'll make it available.
I have no idea what a "video sound rom" is.
either you want video roms or sound roms. the words 'video' and 'sound' are mutually exclusive.

Thanks - there seem to be multiple defender rom sets though and the sound roms are different. I'm not sure of the correct one. The original ROM actually had video sound ROM 1 printed on it (C) 1980.

Cheers,
Dean


EDIT : All sorted - thanks for the info

Hi all,

I'm attempting to repair a D8224 sound board, and require a good dump of the Williams Video Sound ROM 1 (just the binary file). This board was from a Defender machine.

Is there anyone that can help me with the ROM image? I have a programmer (BP Microsystems) that will handle the 2716 EPROM, but I just need a known good copy of it. If at all possible I'd like to get hold of some of the other ROM's as well to try a few of the sound effects.

Cheers!
Dean