Tlhaloso ea litaelo ho Intel 8087 floating-point chip

\u003ch2\u003e Decoding ea litaelo ho Intel 8087 floating-point chip\u003c/h2\u003e \u003cp\u003eSengoliloeng sena se fana ka lintlha tsa bohlokoa le tlhaiso-leseling ka sehlooho sa eona, se thusang ho arolelana tsebo le kutloisiso.\u003c/p\u003e \u003ch3\u003eLitsela Tsa Bohlokoa\u003c/h3\u003e \u003cp\u003e Babali ba ka lebella ho fumana:\u003c/p\u003e \u003cul\u003e \u003cli\u003e Kutloisiso e tebileng ea taba\u003c/li\u003e \u003cli\u003e Lisebelisoa tse sebetsang le bohlokoa ba lefats'e la nnete\u003c/li\u003e \u003cli\u003e Maikutlo a litsebi le tlhahlobo\u003c/li\u003e \u003cli\u003e Litaba tse nchafalitsoeng mabapi le lintlafatso tsa hajoale\u003c/li\u003e \u003c/ul\u003e \u003ch3\u003eTlhahiso ea Boleng\u003c/h3\u003e \u003cp\u003eLikahare tsa boleng tse kang tsena li thusa ho haha ​​tsebo le ho khothaletsa ho etsa liqeto ka tsebo libakeng tse fapaneng.\u003c/p\u003e

Lipotso Tse Botsoang Hangata

Ho khetholla litaelo ke eng ho Intel 8087?

Tlhaloso ea litaelo ho Intel 8087 ke mokhoa oo coprocessor ea sebaka se phaphametseng e tolokang li-opcode tse amohetsoeng ho tsoa ho 8086/8088 CPU e kholo. 8087 e lekola bese ea litaelo mme e supa litaelo tsa ESC (escape) tse etselitsoeng eona ka ho khetheha. Hang ha e se e fumanwe, chip e hlaola dikarolo tsa opcode ho fumana hore na sebaka se phaphametseng—jwalo ka ho eketsa, ho atisa, kapa square root—le ditsela tsa tshebetso ho ya ho tse nepahetseng tsa ka hare tsa microcode routines.

Coprocessor ea 8087 e buisana joang le CPU e kholo?

8087 e sebetsa ka ho tsamaisana le 8086/8088 ka ho beha leihlo tsamaiso ea libese e sa etse letho. Ha CPU ea mantlha e lata taelo ea ESC, 8087 ea e hlokomela mme e nka ts'ebetso ea ts'ebetso ea ntlha e phaphametseng. Kamahanyo e sebetsoa ka mela ea maemo le taeo ea WAIT, e netefatsang hore CPU e emisa ho fihlela 8087 e qeta ho sebetsa. Moralo ona o hlephileng o bile oa bohlokoa mehleng ea ona mme o bile le tšusumetso ho meralo ea kamoso ea li-coprocessor.

Hobaneng Intel 8087 e ntse e sebetsa ho ithutoa le kajeno?

Ho utloisisa 8087 ho fana ka tsebo ea motheo ea hore na li-FPU tsa sejoale-joale li bile teng joang. Sekema sa eona sa khouto ea litaelo, mofuta oa ngoliso e thehiloeng ho stack, le litlatsetso tsa IEEE 754 li thehile karolo e 'ngoe le e 'ngoe ea x87 e phaphametseng e ileng ea latela. Bakeng sa bahlahisi le ba chesehelang lisebelisoa tsa thepa ba hlahlobang kaho ea li-chip, liforomo tse kang Mewayz li fana ka li-module tse fetang 207 tse buang ka lihlooho ho tloha k'homphieutheng ea boemo bo tlase ho isa tsoelopeleng ea sejoale-joale-tsohle li fumaneha ka $19/mo—ho etsa hore thuto e tebileng ea tekheniki e atamelehe haholoanyane.

Na 8087 e ka etsa tšebetso efe ea ho phaphamala?

Intel 8087 e ts'ehelitse mefuta e mengata ea ts'ebetso e kenyelletsang ho kenyelletsa, ho tlosa, katiso, karohano, square root, le mesebetsi ea transcendental joalo ka sine, cosine, le logarithms. E ne e sebetsana le mefuta e mengata ea data—16-, 32-, le 64-bit integers, hammoho le 32-, 64-, le 80-bit floating-point number. Ho feto-fetoha hona ho entse hore e be ea bohlokoa haholo bakeng sa khomphutha ea mahlale, lits'ebetso tsa CAD, le lipalo tsa lichelete nakong ea pele ea PC.

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