Linked by Thom Holwerda on Fri 5th Apr 2013 16:04 UTC
General Development "For years, PC programmers used x86 assembly to write performance-critical code. However, 32-bit PCs are being replaced with 64-bit ones, and the underlying assembly code has changed. This white paper is an introduction to x64 assembly. No prior knowledge of x86 code is needed, although it makes the transition easier."
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RE[3]: Comment by Drumhellar
by transputer_guy on Fri 5th Apr 2013 20:30 UTC in reply to "RE[2]: Comment by Drumhellar"
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The nice thing about the early 32b x86 RISC books like "Inner Loops" was they made it quite clear which instructions should be used in assembler and which to ignore completely. So several hundred codes was reduced to a very small set of basic ops, almost all reg to reg and the load store. Basically the Pentium was a improved 486.

As for 64 bit codes, I'll have to look into that.

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