My brand new A500+ works 100% in my Rev 6a motherboard - no issues or problems. When I try it in my Rev 5 motherboard, I either get nothing at all (just a light on the A500+ sometimes), or it cycles thru its bootup numbers and stops on "20" and goes no further. Tried with two power supplies and the A500 works great without the ACA500+. It has an updated 8372A Agnus and the modifications for 1 MB CHIP RAM, and a Supra 512k board in the expansion bay - and 1.3 ROMS. No other expansions.
Are there issues with the new A500+ and REV 5 boards, or is there something else I should check on to make sure it works?
Dynamic_Computing (10 Minute Amiga Retro Cast)