Re^2: AMD K6 200

[Stelios Valtzis]

> L> Oi epeksergastes 686 exoun diaforetiki texnologia apo tous
> L> pentium kai diaforetiko op-code set. Einai vasismenoi se 
> L> texnologia Risc, eno oi pentium se texnologia Sisc.
>
>E, xm, oxi, ayto einai la8os. to opcode set enos epeksergasth kai h
>arxitektonikh toy den einai eykola parametropoihshma pragmata, einai zhthmata
>sxediasmoy. Oloi oi X86-compatible epeksergastes ousiastika einai CISC.
Mporei
>kapoioi na basizontai se kapoia psiloRISC-designed cores kai opcode
emulation,
>alla 8ewrountai panta CISC mia poy sygkekntrwnoyn ola ta xarakthristika twn
>CISC epeksergastwn (pollapla addressing modes, sygkritika ligoys general
>purpose registrers, mikres pipelines, metablhto mege8os opcodes, megalo
command
>set, mikrh sxetika syxnothta leitoyrgias). 


This is exactly my point, file moy :) Den einai 8ema dual personaliti, opos
poli petiximena les :) Prokeimenou na exoun simvatotita oi epeksergastes
aftoi, egine migration tou kodika tous. Me sigxoreite filoi mou poy
epimeno, alla ksanakoitaksa ta en log dimosievmata kai einai kseka8ara:
iparxei Risc texnologia, Risc op-codes kai eidiko mode (kati san to
protected mode) pou metafrazei ta opcodes gia simvatotita me ton
pentium.... Sas eipa, den eimai apo tous sxediastes tou 686 alla aftoi pou
to sxediasan, etsi lene.....


>
>Mhn perimenete na doyme syntoma pragmatika dual-personality epeksergastes,
ayto
>anhkei mallon sth sfaira ths fantasias pros to paron. Pragmatika RISC designs
>apaitoyn rizikes allages toso sto opcode set kai ta semantics toy X86 oso kai
>sthn eswterikh toy arxitektonikh, pragma poy 8a exei san apotelesma ena
entelws
>kainoyrio, asymbato epeksergasth. 


Kai afto itan to provlima... na sxediastei enas epeksergastis, me to
performance enos Risc, alla simvatou me Pentium. Kai me ton tropo afto,
lene oti to kataferan.....


>
>H kalyterh lysh einai to software emulation pantws. H Digital me to FX32 exei
>petyxei symfwna me ta legomena ths performance analogo me pentium sta 200MHz
>xrhsimopoiwntas ton Alpha AXP21164 sta 500MHz. 
>

Afto to software emulation, to exei ensomatomeno o 686.....


>Christos Ricudis, ricudis at paiko.the.forthnet.gr         2:413/11.0.
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