Dynamic assembly machine code in thinBasic

**Petr Schreiber** · 08-03-2008, 10:56

Hi Abraxas,

very nice program!
And you are right, I was refering to some occasional GPFs of thinAir itself.

Bye,
Petr

**Charles Pegge** · 08-03-2008, 11:16

Thank you both, they are useful quick references to have around. OpCodes2 has the more specialised SIMD and 3DNOW instructions should we need them.

**Petr Schreiber** · 08-03-2008, 17:03

Charles,

is there any way to determine whether CPU can run for example SSE instructions.
With high performance code in strings, we could test on script startup whether MMX or SSE is supported and then assign apropriate values ( once ) to the machine code variable. So kind of JIT script optimization

Petr

**Charles Pegge** · 08-03-2008, 18:31

Yes Petr, the magic instruction is CPUID (0F A2) which will give chapter and verse on the CPU. The manual goes into great detail from page 3-111. I'll have to study it, and find out what codings AMD and VIA use on their chips, in addition to the standard codings.

http://developer.intel.com/design/pe...als/243191.htm