[hatari-devel] New CPU and falcon emulation

[Laurent Sallafranque]

Hi Miro,

You just have to change the following option in the main CMakeLists.txt :

set(ENABLE_DSP_EMU 1
     CACHE BOOL "Enable DSP 56k emulator for Falcon mode")
set(ENABLE_TRACING 1
     CACHE BOOL "Enable tracing messages for debugging")
set(ENABLE_SMALL_MEM 0
     CACHE BOOL "Enable to use less memory - at the expense of emulation 
speed")
set(ENABLE_WINUAE_CPU 1
     CACHE BOOL "Enable WinUAE CPU core (experimental!)")


Just change set(ENABLE_WINUAE_CPU 0 by set(ENABLE_WINUAE_CPU 1


Then rebuild Cmake and then compile hatari from scratch.

In the config panel, choose

Machine type : Falcon
CPU type : 68030
CPU clock : 16 Mhz (some demos run only with 32 Mhz, see the 
compatibility list on hatari's site)
Falcon Dsp : full
Cpu parameters :
24 bits : check
prefetch mode : check
cyc exact : don't check it for now, it's not implemented
Real time clock emu : check
Patch timer_d : not check
Blitter emu : check
MMU emulation : not check, (not implemented for now)

In the FPU part : choose CPU internal (I don't know if there's a 
difference with 68881 and 68882)
choose also more compatible, slower

I use 14 Meg for the memory.

Tell me if this works also for you.

regards

Laurent



e 26/01/2011 15:01, Miro Kropác(ek a écrit :
> Hi,
>
> how do I activate this new code? It's done by default?
>
> On Wed, Jan 26, 2011 at 3:00 PM, Laurent Sallafranque 
> <laurent.sallafranque at free.fr <mailto:laurent.sallafranque at free.fr>> 
> wrote:
>
>     Hi,
>
>     I've done a lot of tests. I've got better results now than I had
>     with the older core.
>     For me, this new core is adopted ;)
>
>     More programs are working, and I haven't seen any regression for now.
>     Sound is globally better (there sre still some glitches sometimes).
>
>     I've included the new run_dsp code.
>     If I want to let run BOUND2, BOUND3 and ROT3DBMP, I can add a "+3"
>     to this line in dsp_run:
>            save_cycles += nHostCycles * 2; // + 3 if we want
>     bound2.prg, bound3.prg and rot3dBMP to work properly
>
>     I won't add the "+3" for now, as it may hide another problem.
>
>     I've adapted the algo tomas from nocrew explained me for MP2 player.
>     Sound is now correctly transmitted from DMA to DSP_receive.
>     But the music plays a lot too fast (I don't know why for now).
>
>     Synchro between CPU and DSP are still the main problem to solve I
>     think.
>     Videl is the other one. I'll give it a try now, as I think it's
>     the only component that is not emulated at all.
>
>     Maybe Videl improvement will increase falcon emulation
>     compatibility (for HBL and VBL sync for example).
>     Anyway, it'll allow more demos to work.
>
>     So, except if you think there's something more urgent to finish,
>     I'll enter in videl emulation.
>
>     Regards
>
>     Laurent
>
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>
>
>
> -- 
> MiKRO / Mystic Bytes
> http://mikro.atari.org
>
>
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