Re: Atari TT (next)

Andreas Schwab
2012-01-08T09:35:09Z

Michael Schmitz <schmitzmic@googlemail.com> writes:

> Come to think of it - does the TT video chipset actually require screen
> memory to reside in ST-RAM?

Yes. Only the SCSI-DMA and SCC-DMA chips can address TT-RAM.

> That's what I meant - the kernel residing in TT-RAM automatically will map
> this chunk at kernel virtual address 0x0. Something in our mem_init logic
> prevents using RAM with a lower physical address than was used by the
> first chunk. I'm quoting from memory here - Roman Zippel might know the
> exact answer to this.

If the kernel resides in TT-RAM all of ST-RAM is supposed to be used by
stram_alloc.

Andreas.

--
Andreas Schwab, schwab@linux-m68k.org
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