Re: 1152k + 8 megs on ROM 3 GS

[bazyar@netcom.com (Jawaid Bazyar)]

mcfudge@wbb.com writes:


>Is is possible to have 9,344k on my ROM 3 GS?  I have heard that the
>maximum amount of memory I can have is 8 megs, but what of adding 8 megs
>to the 1.125 megs already in the ROM 3?  I don't know much about DMA
>problems... how much of that 9megs+ RAM would be DMA compatible?  I
>suppose the rest becomes a RAMdisk, right?

  The Apple IIGS is incapable of directly addressing more than 8MB of
RAM period. In a ROM 03, if you have 8MB on a memory card the
top 1MB is ignored.

>Why is it that the GS can handle 16 megs of addresses, but only 8 megs can
>be used?  What happens to the other 8 megs of space?  ..nothing?

  It's used for ROM, I/O, the "slow" memory, etc.

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