| From: | Sam Jordan |
| Date: | 17 Aug 2000 at 17:45:44 |
| Subject: | Re: G3 & CGFX |
Am 17-Aug-00 schrieb Joseph Fenton:
>> Must be one with dynamic recompilation, using a really
>> advanced JIT. BTW, performance measurements when using emulators
>> with dynamic recompilation can be tricky: the code is surely
>> executed very quickly, but at some time it had to be compiled,
>> which takes certainly quite some time (significantly more than just
>> interpreting the code). Such systems tend to slow down when
>> loading programs or when executing very complex/big software.
>PowerMacs have had Dynamic Recompilation for years now; if
>you want to see how good it works (on Mac programs at least),
>try out Executer for the PC. It runs Mac 68K programs with
>DR and gets VERY good results, similar to what you see
>with PowerMac G3 or G4 systems (on a PII or PIII).
>Macs have never been big on self-modifying code, and
>the segmented nature of 68K programs with seperate data
>areas makes DR work VERY well on them.
Are the concepts behind those JIT-based emulators explained
somewhere?
bye