More modern Amiga chips and OSes will give you
VGA-friendly modes, but
that only works once the OS is up. It's a pain to diagnose boot
problems.
Unless you are lucky enough to have an A3000 with it's
built-in scandoubler!
Jeff
--
Home of the TRS-80 Model 2000 FAQ File
http://www.cchaven.com
http://www.geocities.com/siliconvalley/lakes/6757