[hatari-devel] Emulation reset, old-UAE vs. WinAUE core

[Eero Tamminen]

Hi,

On sunnuntai 19 kesäkuu 2011, Nicolas Pomarède wrote:
> Le 18/06/2011 10:43, Eero Tamminen a écrit :
> > I started to wonder why breakpoints didn't work anymore after emulation
> > reset and noticed that while old UAE core always preserves the
> > debugging flag on reset:
> > 
> > So, why WinAUE always resets the debugger flag?
> 
> Well, I guess WinUAE's core (not AUE please :) ) as being directly taken
> from the Amiga version doesn't include this notion of debuger.

I haven't used WinUAE, doesn't it include a debugger?
At least its code in Hatari has many references to debugger...


> It's fine for me if we don't backport everything from current UAE to
> WinUAE, because I think we should first make the cpu core works before
> backporting our own additions (else, we might add side effects and makes
> it harder to fix the winuae's core in Hatari).
> The less we modify WinUAE's core for now, the more we can be sure the
> remaining problems are in Hatari and we have a direction to look at.
> 
> > Is there any reason why we wouldn't want it to be preserved always,
> > either by explicitly preserving it in all of these places, or by
> > always re-setting it after reset, like in the attached patch?
> 
> Your patch looks good to me, I also think debuging features should be
> preserved when reseting (cold or warm). You can apply it if you like.

Commited.


>> Then I noticed also a problem related to WinUAE's resets.  While all
>> old AUE m68k_reset() calls come from Reset_*() ->  M68000_Reset()
>> which is called on specific configuration changes or on keyboard
>> shortcut...
>> 
>> Should uae_reset() calls also be converted to DlgAlert_Notice()
>> calls so that in those cases user also knows what happened and
>> can reboot the emulation at his/her convenience?
> 
> Why not ; I don't consider this a top priority over the cpu emulation +
> STF/STE integration, but if you have a patch for this, let's go for it.

I'll look into this after v1.5 release when adding Exception debugging
to WinUAE & possibility to break on interrupts to both cores.

(Added note about it to todo.txt.)


	- Eero