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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: |
Tue, 21 Dec 2010 12:49:35 +0100 |
On 21.12.2010, at 12:14, Artyom Tarasenko wrote:
> On Tue, Dec 21, 2010 at 10:25 AM, Alexander Graf <address@hidden> wrote:
>>
>> On 21.12.2010, at 02:24, Andreas Färber wrote:
>>
>>> Am 21.12.2010 um 01:10 schrieb Alexander Graf:
>>>
>>>> On 21.12.2010, at 01:06, Andreas Färber wrote:
>>>>
>>>>> Am 20.12.2010 um 23:45 schrieb Alexander Graf:
>>>>>
>>>>>> On 31.05.2009, at 17:20, Stuart Brady wrote:
>>>>>>
>>>>>>> Here's an update of the Z80 system emulator, which currently emulates
>>>>>>> the ZX Spectrum only. [...]
>>>>>>
>>>>>> [...] do you think it's a valuable target to have in upstream qemu?
>>>>>
>>>>> The z80 was also used in the more modern TI-83 Plus programmable
>>>>> calculator [1], for instance
>>>>
>>>> The general I/O framework is heavily geared towards server and desktop
>>>> use. The main use case of the Z80 that I'm aware of is the GameBoy. Not
>>>> sure that one fits in there too well :).
>>>>
>>>> The Spectrum however does fit the desktop case, so it certainly has my
>>>> blessings.
>>>
>>> Knowing the ZX Spectrum only from the attic, I agree that emulating game
>>> consoles is not the primary purpose or strength of QEMU.
>>> (Although I wouldn't mind if someone wanted to contribute a PS3 machine for
>>> Cell B.E. emulation!)
>>>
>>> Fwiw mips, arm, m68k, cris, microblaze seem to form a growing third
>>> category of QEMU targets though, embedded systems.
>>
>> Oh, sure. I'd count in embedded systems here too. My main point was that we
>> don't have frameworks to deal with Joysticks, 3D or other stuff real game
>> system emulation would need.
>
> With the emulation of the ancient machine based game platform it is
> even more complicated: games expect some certain timings from the CPU,
> graphic and sound cards. So, I'm not sure if TCG can be used for it.
Yup, old ones probably won't work. More recent ones should. Uli actually did
create a GBA emulator using TCG a few years back, so it definitely does work
for some stuff. I'm fairly sure that the more recent the systems become, the
more event driven they also are - which is good for dynamic recompilation.
Either way, those really don't belong inside the Qemu source tree IMHO as
development models don't match in general. Instead, a libtcg would be a lot
more fitting for those cases.
Alex
- Re: [Qemu-devel] QEMU forks survey, (continued)
- Re: [Qemu-devel] QEMU forks survey, François Revol, 2010/12/21
- Re: [Qemu-devel] QEMU forks survey, Stefan Weil, 2010/12/21
- Re: [Qemu-devel] QEMU forks survey, Bastien ROUCARIES, 2010/12/22
- Re: [Qemu-devel] QEMU forks survey, Andreas Färber, 2010/12/22
- Re: [Qemu-devel] QEMU forks survey, Bastien ROUCARIES, 2010/12/26
- Re: [Qemu-devel] QEMU forks survey, Andreas Färber, 2010/12/26
- Re: [Qemu-devel] QEMU forks survey, Stefan Weil, 2010/12/27
- Re: [Qemu-devel] QEMU forks survey, Andreas Färber, 2010/12/27
- Re: [Qemu-devel] [PATCH] Z80 emulation updated again!, Alexander Graf, 2010/12/21
- Re: [Qemu-devel] [PATCH] Z80 emulation updated again!, Artyom Tarasenko, 2010/12/21
- Re: [Qemu-devel] [PATCH] Z80 emulation updated again!,
Alexander Graf <=
Re: [Qemu-devel] [PATCH] Z80 emulation updated again!, Artyom Tarasenko, 2010/12/21
Re: [Qemu-devel] [PATCH] Z80 emulation updated again!, Stuart Brady, 2010/12/29