Need help with decoding x86 instructions!

[Guest_imported]

Hi!
Does anyone have an idea on how this can be done thru hardware? ...i.e do the x86 opcodes follow any particular pattern...seems completely random to me..anyone know any patterns that might aid in decoding them..? desperate..

Quasar

 

[cluelessNewbie]

in the appendix of the instuction set reference (vol #2) from the intel web site.

http://developer.intel.com/design/Pentium4/manuals/

these are rather large pdf files but worth the download if you're serious about asm programming.

the instruction set has some oddities due to historical reasons but there is some logic (ha!) to it.