Hi,

a few years ago I found some good sites about each x86 related mnemonic, opcode and micro-opcode.

Where can I find a full list of opcodes, mnemonics etc and their clock ticks or cycles needed out there?

I mean for example a mov-instruction requires .. clock ticks or cycles on a 386 and on a 286 it requires .., on a Pentium it requires ... cycles.

Where can I find such a complete list?

Thanks in advance
Alexander

It is not as simple as you think. I suggest you to look for Agner Fog's optimization manual(s)

Also read Intel's and AMD's optimisation manuals. Both of them are very good.

wow vid,
sounds hot!

especially:

http://www.phatcode.net/articles.php?id=263
http://www.agner.org/optimize/

vid, any more cool insider suggestions?

Is it possible to get the cycles myself? Or how does anyone gets the cycles?

Thanks

revolution,

I've tried to read the Intel optimisation manuals but haven't found anything useful.

Are AMD's manuals better?

They come with "Appendix C Instruction Latencies". But read Agner to have an idea of how those timings must be interpreted because it is not simple as the pre-pentium era to calculate how much time a code block could take.

I wouldn't say they are better or worse. They cover some different aspects of optimising. AMD have more extensive examples to show some of the techniques. Intel like to focus more on the theory and mathematics behind things.

I am surprised you say you found nothing useful! There is a lot of good info in there if one is serious about all aspects of optimisation.

LocoDelAssembly,

you say "appendix c" ... ok, then I shall have a look at it!