On 21.12.2010, at 12:14, Artyom Tarasenko wrote: > On Tue, Dec 21, 2010 at 10:25 AM, Alexander Graf <ag...@suse.de> 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
