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Re: [Qemu-devel] Support NEC PC-98x1 on QEMU
From: |
Stuart Brady |
Subject: |
Re: [Qemu-devel] Support NEC PC-98x1 on QEMU |
Date: |
Mon, 7 Sep 2009 20:58:17 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Takeda-san,
> This is the patch to support NEC PC-98x1 on QEMU.
Ooh, awesome! :)
Some hopefully useful feedback, though...
There's no need to add this as a whole new architecture, although
perhaps the use of TARGET_PC98 was only meant to be temporary...
As the patch isn't against the latest code in Git, I suppose it's not
intended for inclusion just yet... Still, it'd be nice to see it
cleaned up slightly, and applied! :)
AFAICT, the only PC98-specific behaviour in existing source files
relates to handling of:
* DMA
* i82078 floppy controller
* i8259 interrupt controler
* A20 gate
The only truly CPU-specific feature that I can see is the A20 gate
handling. While I don't understand why (or whether) that particular
change is needed, it could certainly be done without any #ifdefs.
For the other changes, I expect that it needs to be made clear that
they really are PC98-specific, and that they are not just workarounds.
BTW, I think most subscribers to this list (and particularly the
maintainers) will be more likely to look at patches if they included
inline, or attached as text/plain (with the -N flag to include new
files in your patch). Zip format can be a slight disincentive for
review by those with no special interest in the patch in question...
Looks like great work, though!
Cheers,
--
Stuart Brady