But won't a 1Meg chip eat into bus max? or is it not mapped that way.
That's an interesting question. CD32 and A1200 support 1MB, the others 512K? Not counting the various "Romy" hacks that allow A3k and A4k to support 1MB.
Trusty Wikipedia tells me the following:
0x00F0 0000 512.0 512K System ROM (reserved for extended ROM image e.g. CDTV or CD³²)
0x00F8 0000 256.0 256K System ROM (Kickstart 2.04 or higher)
0x00FC 0000 256.0 256K System ROM(
link)
Maybe it banks into that additional space? I've never seen a memory map that lists it like that, not that I spend a lot of time studying A500 memory maps.
Again, this is one of those products that would probably sell a whole lot better if it was more clearly explained. I'm in though, if it does what I think it can do. One of my biggest reservations about burning custom 3.9 ROM's is I just don't want to buy
the hardware, LOL.