Re: [hatari-devel] New version of WinUAE's cpu core

[Laurent Sallafranque <laurent.sallafranque@xxxxxxx>]

Hi Nicolas,

First, I thank you very much, it's a huge work that you've archieved here.
Great work.

I've quickly tested 2 demos that had worked with previous versions but 
were not working with the last version of hatari :
- Moai : it works now
- EKO system : it works also now ;)

It looks promising.
(Falcon mode, no MMU, cycle exact)

But, I've also tested my current work and the timings differ a lot !

I'll give this version a closer look, I think it'll take some time to 
check everything.

A thought : if one selects Falcon emulation, maybe we should select the 
MMU ON now (a Falcon had a MMU inside).

Again, it's a great work !

Laurent




Le 20/11/2014 22:35, Nicolas Pomarède a écrit :
> Hello
>
> A test version of the new cpu core based on WinUAE 2.8.1 is available, 
> at least :)
>
>
> You can get it here : http://download.tuxfamily.org/hatari/test/
>
>
> The zip file contains 2 exe for windows build in 32 and 64 bit mode 
> using the WinUAE's core.
>
> It also contains the source tree for Linux/OSX users. Just run :
> ./configure --enable-winuae-cpu && make
>
> It took much more time than expected to adapt our old version based on 
> WinUAE 2.3 to this new version, because many things changed internally 
> to get more accuracy in cycle exact mode, some functions kept their 
> name but had different behaviour :(, some functions even had different 
> versions based on parameters' type (C++ overloading) and needed to be 
> adapted to C (having similar names for different functions is not 
> really helping when working on such low level code) , ...
>
> This required lots of changes to WinUAE's code, some bugs were also 
> fixed (and forwarded to WinUAE).
>
> But all in all, it should be for the good, this version implements 
> some more low level depiction of the CPU's mechanism, full MMU 
> emulation (for 68030 and 68040/60), more accurate FPU and more to come.
>
> Given all the changes, I'd like people to test this version before 
> committing it to our mercurial repo. I tested it successfully with 
> various tos, STF,TT, Falcon modes, RAM, compatible or cycle exact mode 
> and so far all those combinations are working under TOS.
>
> But I only tested 2 or 3 demos and only 1 game (beats of rage).
>
> I would need people to test it with their favorite games/demos and to 
> report *regressions*. For now, it's not obvious improvements will be 
> visible, but at least it's important to ensure there's no regression 
> (programs that worked should still work, and if a program works badly 
> with this new version but it was already bad before, then it's OK for 
> now).
>
> Once it's OK, I will commit the new version to HG.
>
> Note that as usual, WinUAE produces a lot of warning during 
> compilation, don't bother too much about it, they're mostly harmless 
> and will be disabled later.
>
>
> Nicolas