Re: [hatari-devel] Very slow emulation when enabling Cycle Exact

[Nicolas Pomarède <npomarede@xxxxxxxxxxxx>]

Le 13/02/2018 à 17:26, Troed Sångberg a écrit :
> FWIW:
>
> On my core i7 machine Hatari uses 100% CPU in Falcon emulation (16MHz 68030, DSP option doesn't matter) regardless of cycle exact setting.

Note that emulation will be even slower when DSP is really used.
You can see that with DML "030" demo : in the part where DSP is not used 
for computing, music will often play at normal speed, but as soon as dsp 
emulation is necessary, music will slow down (more or less depending on 
your cpu).

Cycle exact mode in 2.1 also includes cache emulation (which was not the 
case in Hatari 2.0 IIRC), so this will take even more cpu.

In short : full falcon emulation requires a really recent/powerful CPU 
:)  (I also have an i7-6700 @ 3.4 GHz and it's not enough to run "030" 
in realtime)

Nicolas