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Article #893

x86 i risc

#893
From: PioM
Date: Mon, 18 Dec 2006 23:00
20 lines
1637 bytes
Witam

Teoretycznie do dzialania komputerow wystarczyly by rozkazy podobne do RISC:

1: add,div,pow,sin,sqrt,mul,sub,cmp
2: shr,shl, ror,rol,not,and,or,xor
3: jnz,jz,jb,ja,jc,jmp,call,ret
4: mov,in,out
prefixy: 8 bits, 16 bits,(24 bits,)32 bits,64 bits,128 bits, 256 
bits,[absolute address],[relative address],relative address,absolute 
address,immediate (zmodifikowany relative 0 offset z dodatkowym 
przesunieciem),

prefix1,prefix2,instrukcja,sufix1,sufix2

Rejestry nie sa konieczne (potrzebne). Mozna rezerwowac pamiec np. 
00000000-00000nnn dla "rejestrow".

x86 jest chaotyczny i nieuporzadkowany. Moze ma jeszcze jakas ukryta 
"warstwe" rozkazow? 
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From: "PioM" <piotrmarasz@hotmail.com>
Newsgroups: pl.comp.lang.asm
Subject: x86 i risc
Date: Tue, 19 Dec 2006 00:00:07 +0100
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