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Re: proposal: millicode

On Sat, Jan 19, 2008 at 09:02:33AM -0700, Tim Rightnour wrote:
> On 19-Jan-2008 Ignatios Souvatzis wrote:
> > Because at that address there is only Slooooooooooow RAM.  You don't want to
> > use it for anything else but DMA buffers for the audio device, the built-in
> > graphics, and the built-in floppy, that are connected to it.
> Where is that ram range on amigappc?  How far up does it extend?

Generally, the same as on Amiga.

THose are Amiga 3000 and Amiga 4000 machines with on-mainboard fast
ram from 0x7000 0000 to 0x7fff ffff (max) and CPUboard RAM from
0x8000 0000 up, where the last 512 kBytes are also (or instead -
I'm not sure) accessible at 0xFsomething, so you can put PPC trap
vectors there.

There are alos Amiga 1200 ppc boards, that have the RAM somewhere 

Frank will know the exact numbers by heart, I guess ;-)


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