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X86 Assembly Language

X86 Assembly Language. Same Assembly Language for 8086,80286,80386,80486,Pentium I II and III Newer Processors add a few instructions but include all instructions from earlier processors. CISC (X86) vs. RISC (MIPS). CISC machines have fewer registers

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X86 Assembly Language

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  1. X86 Assembly Language Same Assembly Language for 8086,80286,80386,80486,Pentium I II and III Newer Processors add a few instructions but include all instructions from earlier processors

  2. CISC (X86) vs. RISC (MIPS) • CISC machines have fewer registers • CISC machines have more addressing modes – one operand can be memory (no LW or SW) • CISC machines have more instruction formats and they vary in length • CISC machines have more instructions • Programs require fewer CISC instructions than RISC but time/instruction is longer • With pipelining and dynamic execution, a CISC instruction set is perhaps 10-20% slower than RISC

  3. Assembly Resources (Free) • Free AMD X86 manuals • http://www.intel.com/design/pentiumii/manuals/24319102.PDF

  4. Celeron & PIII – P6 Core • Celeron Home Page http://www.intel.tm.za/design/celeron/index.htm • P6 Core Manual http://www.intel.tm.za/design/pentiumII/manuals/244001.htm

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