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Re: [Qemu-devel] [PATCH] Z80 emulation updated again!
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH] Z80 emulation updated again! |
Date: |
Mon, 20 Dec 2010 23:45:08 +0100 |
On 31.05.2009, at 17:20, Stuart Brady wrote:
> Hi!
>
> Here's an update of the Z80 system emulator, which currently emulates
> the ZX Spectrum only. Significant changes since Ulrich Hecht's updated
> version are as follows:
>
> * Converted CPU emulation core to TCG
> * Fixed emulation of 'bright' display attribute
> * Fixed display output for pixel formats besides 32-bit RGB
> * Improved keyboard handling, with support for cursor keys, etc.
> * Removed dead code
> * Now supports libspectrum 0.5 (for snapshot loading)
> * Numerous cleanups
>
> The emulation has not yet been optimised, but should achieve something
> between 100 and 200 times the performance of real hardware.
>
> Thanks go to Ulrich for adding support for snapshot loading, and for
> porting the 'HALT' hack from xz80, in his updated version!
>
> BTW, I have also written some experimental 128K emulation -- however,
> this only achieves ~10 times the speed of real hardware, as the 128K
> makes heavy use of bank switching.
>
> I can split the patch up if wanted, although only 44 insertions are in
> existing files.
Since this just came up again - are you still working on this? It's be a shame
to see this target bitrot to extinction. Also, do you think it's a valuable
target to have in upstream qemu? If so, please create a proper patch set out of
it, so it can be reviewed.
Alex
- Re: [Qemu-devel] [PATCH] Z80 emulation updated again!,
Alexander Graf <=
- Re: [Qemu-devel] [PATCH] Z80 emulation updated again!, Andreas Färber, 2010/12/20
- Re: [Qemu-devel] [PATCH] Z80 emulation updated again!, Alexander Graf, 2010/12/20
- Re: [Qemu-devel] [PATCH] Z80 emulation updated again!, Stefan Weil, 2010/12/21
- [Qemu-devel] QEMU forks survey, Andreas Färber, 2010/12/21
- Re: [Qemu-devel] QEMU forks survey, Alexander Graf, 2010/12/21
- Re: [Qemu-devel] QEMU forks survey, Peter Maydell, 2010/12/21