Re: AE RamKeeper?

[david@uow.edu.au (David Wilson)]

Mark Westergaard <MarkWesty@hotmail.com> writes:
>Edhel Iaur, Esq. wrote:
>> Doesn't all the IIgs's ROM count as part of the 24-bit (.'. 16MB RAM)
>> address limitation, making a limit?  I'm guessing the IIgs doesn't
>> have 8MB of ROM, but a ROM-switching-in-and-out thingiey like in the
>> //e et al. was probably never added to the IIgs, making the bulk of
>> the IIgs's ROM pretty much stuck in place.  Assuming I'm right (am
>> I?), what would the theoretical RAM limit be (I mean GS RAM, of
>> course, not "Slinky", Titan, et al.)?

>According to the manual, my ROM 1 GS has 128K of ROM. I have verified that
>the ROM is in banks FE and FF. I remember reading somewhere that the ROM 3
>GS has 256K of ROM, but am unable to verify this as I only have a ROM 1.
>The theoretical limit for a ROM 1 GS would therefore be 16,256K or 15.875
>MB.

Except that the 128KB of slow RAM is in banks E0 and E1. Thus you could not
have more than 14,680,064 bytes of fast RAM without holes.

I think the ROMDisk starts at F0/0000 and runs up to FB/FFFF on a ROM3 or
FD/FFFF on a ROM1.

E2/0000 to EF/FFFF is wasted?
--
David Wilson  School of IT & CS, Uni of Wollongong, Australia  david@uow.edu.au