MESS - problem with atari 7800 bios

[Midnight Tboy]

hey there,

I've not pretty much got setup for my frontend all the emulators, however, I'm having a problem with MESS and the Atari 7800. 

The rest of the MESS based games Ive setup (colecovision, atari 5200, vectrex, supervision) are fine with the roms I've got, however, every time I try and use the a7800 bios file it gives a crc error in the dos window for the bios check.....I've tried downloading the bios from various sources from searches.....and am using MESS v0.99.  Is this a known problem, or could anyone please point me in the right direction of either the proper valid rom for that MESS version, or alternatively a different/better emulator I could use that supports Esc to exit, and full screen (ie for using with mamewah)

cheers,
Tuck

[Midnight Tboy]

no need - I finally managed to find a working one - thanks for reading anyways