Re: [hatari-devel] Re: Hatari 040/060 + MMU exception handling regression

[Eero Tamminen <oak@xxxxxxxxxxxxxx>]

Hi,

On 4/3/20 12:18 AM, Eero Tamminen wrote:
> Git bisect gave this as the Hatari commit breaking
> 040/060 + MMU exception handling for EmuTOS:
> -----------------------------------------------
> 6476cca9daf6e3ab114d75474f5fb76b1580107c is the first bad commit
> commit 6476cca9daf6e3ab114d75474f5fb76b1580107c
> Author: Nicolas Pomarede <npomarede@xxxxxxxxxxxx>
> Date:   Mon Feb 17 18:11:40 2020 +0100
>
>      Enable the new bus error handler in WinUAE's cpu core and set 
> 'hardware_bus_error=1' on bus error
....
> I.e. that variable isn't used in the cpummu.c
> file where 040 & 060 MMU emulation is.
>
> Nicolas, Toni?
>
>
> Attached patch is a workaround fixing 512k EmuTOS
> boot with 040/060 + MMU.

Even with that patch, 040/060 emulation doesn't work quite as well as 
before.

While Linux booted fine with last year Hatari git version ST/STE + 040 + 
MMU emulation, now I need both "--cpu-exact off" & "--compatible off" 
i.e. disable both cache & prefetch emulation for it to work.

If I have time during weekend, I'll bisect that too.


	- Eero