{"id":181694,"date":"2026-05-24T00:25:20","date_gmt":"2026-05-23T22:25:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypolneno-dizassemblirovaniya-mikrokoda-i386-i-sozdan-otkrytyj-cpu-z386"},"modified":"2026-05-24T00:25:20","modified_gmt":"2026-05-23T22:25:21","slug":"vypolneno-dizassemblirovaniya-mikrokoda-i386-i-sozdan-otkrytyj-cpu-z386","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypolneno-dizassemblirovaniya-mikrokoda-i386-i-sozdan-otkrytyj-cpu-z386","title":{"rendered":"i386 mikrokoodi desassembleerimine on l\u00f5pule viidud ja avatud CPU z386 on loodud.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Entusiastid suutsid edukalt ekstraheerida ja disassembleerida Intel 80386 protsessori mikrokoodi, mis dokumentatsiooni puudumise t\u00f5ttu peeti «musta kastiks». Mikrokoodi binaarne pilt taastati AI abiga, kasutades k\u00f5rgresolutsioonilisi fotosid kristallist, ning t\u00f6\u00f6loogika anal\u00fc\u00fcsiti kristallil olevate \u00fchenduste j\u00e4lgimise kaudu. Aegamisi m\u00e4\u00e4rati mikrooperatsioonide (μ-ops) struktuur, v\u00e4ljad, t\u00e4itmise j\u00e4rjekord ja k\u00e4skluste l\u00f5pu markerid. Projekti tulemused on avaldatud GitHubis kui avalik domeen.<\/p>\n

\"i386<\/center><\/p>\n

Selgus, et CPU 80386 iga k\u00e4sk t\u00e4idetakse t\u00e4ielikult mikrokoodi abil, samas kui 8086 ja kaasaegsetes protsessorites t\u00f6\u00f6deldakse osa k\u00e4skudest otse. Lisaks ei rakenda 80386 mikrokood, erinevalt 8086 protsessoritest, algoritme otse, vaid peamiselt konfigureerib riistvaralisi kiirendajaid (korrutaja, jagaja, kiire nihke, PTU (Protection Test Unit)). <\/p>\n

Uuringu k\u00e4igus avastati ka v\u00f5imalik turvaprobleem, mis seondus sisend-\/v\u00e4ljund\u00f5iguste bitikaardi (IO permission bitmap) t\u00f6\u00f6tlemisega: 4-baidise juurdep\u00e4\u00e4su puhul kontrolliti \u00f5iguste bitte ainult kolme esimese baidi jaoks, samas kui neljanda baidi juurdep\u00e4\u00e4su ei kontrollitud, mis teoreetiliselt v\u00f5imaldas juurdep\u00e4\u00e4su riistvararegistritele, millele juurdep\u00e4\u00e4s pidi olema keelatud.<\/p>\n

Avaldatud mikrokoodi alusel on v\u00e4lja t\u00f6\u00f6tatud avatud CPU z386, mis on realiseeritud SystemVerilog keeles ja t\u00f6\u00f6tab FPGA-l. Z386-s on riistvarastruktuurid, mida juhib originaalmikrokood, asemel, et rakendada iga k\u00e4sku eraldi RTL (Register-transfer level) kujul. Valmistatud rakenduse j\u00f5udlus vastab kiirele 386 PC-le (~70MHz). Z386 all suudeti edukalt k\u00e4ivitada DOS 6\/7, DOS\/4GW, DOS\/32A ja m\u00e4nge nagu Doom ja Cannon Fodder.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u042d\u043d\u0442\u0443\u0437\u0438\u0430\u0441\u0442\u044b \u0441\u043c\u043e\u0433\u043b\u0438 \u0443\u0441\u043f\u0435\u0448\u043d\u043e \u0438\u0437\u0432\u043b\u0435\u0447\u044c \u0438 \u0434\u0438\u0437\u0430\u0441\u0441\u0435\u043c\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430 Intel 80386, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0438\u0437-\u0437\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438 \u0441\u0447\u0438\u0442\u0430\u043b\u0441\u044f «\u0447\u0451\u0440\u043d\u044b\u043c \u044f\u0449\u0438\u043a\u043e\u043c». \u0411\u0438\u043d\u0430\u0440\u043d\u044b\u0439 \u043e\u0431\u0440\u0430\u0437 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 \u0431\u044b\u043b \u0432\u043e\u0441\u0441\u043e\u0437\u0434\u0430\u043d \u0441 \u043f\u0440\u0438\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u0435\u043c AI \u043f\u043e \u0444\u043e\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u044f\u043c \u043a\u0440\u0438\u0441\u0442\u0430\u043b\u043b\u0430 \u0432 \u0432\u044b\u0441\u043e\u043a\u043e\u043c \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0438, \u0430 \u043b\u043e\u0433\u0438\u043a\u0430 \u0440\u0430\u0431\u043e\u0442\u044b \u0440\u0430\u0437\u043e\u0431\u0440\u0430\u043d\u0430 \u0447\u0435\u0440\u0435\u0437 \u0442\u0440\u0430\u0441\u0441\u0438\u0440\u043e\u0432\u043a\u0443 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u043d\u0430 \u043a\u0440\u0438\u0441\u0442\u0430\u043b\u043b\u0435. \u041f\u043e\u0441\u0442\u0435\u043f\u0435\u043d\u043d\u043e \u0431\u044b\u043b\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u044b \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u043c\u0430\u043d\u0434 (μ-ops), \u043f\u043e\u043b\u044f, \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u0438\u0441\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438 \u043c\u0430\u0440\u043a\u0435\u0440\u044b \u043a\u043e\u043d\u0446\u0430 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439. \u041d\u0430\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":181695,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181694","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47i386 mikrokoodi disassembleerimine on l\u00f5pule viidud ja avatud CPU z386 on loodud | ProHoster","description":"Entusiastid suutsid edukalt v\u00e4lja v\u00f5tta ja disassembleerida Intel 80386 protsessori mikrokoodi, mida dokumentatsiooni puudumise t\u00f5ttu peeti \"mustaks karbiks\". Mikrokoodi binaarset pilti taastati AI abil k\u00f5rge eraldusv\u00f5imega kristalli fotode p\u00f5hjal ning t\u00f6\u00f6loogika anal\u00fc\u00fcsiti kristalli \u00fchenduste j\u00e4lgimise kaudu. Aja jooksul m\u00e4\u00e4rati mikrok\u00e4skude (\u03bc-ops) struktuur, v\u00e4ljad, t\u00e4itmise j\u00e4rjekord ja k\u00e4skude l\u00f5pumarkeerimised. Projekti edusammud","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypolneno-dizassemblirovaniya-mikrokoda-i386-i-sozdan-otkrytyj-cpu-z386","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u043e \u0434\u0438\u0437\u0430\u0441\u0441\u0435\u043c\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 i386 \u0438 \u0441\u043e\u0437\u0434\u0430\u043d \u043e\u0442\u043a\u0440\u044b\u0442\u044b\u0439 CPU z386 | ProHoster","og:description":"\u042d\u043d\u0442\u0443\u0437\u0438\u0430\u0441\u0442\u044b \u0441\u043c\u043e\u0433\u043b\u0438 \u0443\u0441\u043f\u0435\u0448\u043d\u043e \u0438\u0437\u0432\u043b\u0435\u0447\u044c \u0438 \u0434\u0438\u0437\u0430\u0441\u0441\u0435\u043c\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430 Intel 80386, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0438\u0437-\u0437\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u044f \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438 \u0441\u0447\u0438\u0442\u0430\u043b\u0441\u044f "\u0447\u0451\u0440\u043d\u044b\u043c \u044f\u0449\u0438\u043a\u043e\u043c". \u0411\u0438\u043d\u0430\u0440\u043d\u044b\u0439 \u043e\u0431\u0440\u0430\u0437 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u0434\u0430 \u0431\u044b\u043b \u0432\u043e\u0441\u0441\u043e\u0437\u0434\u0430\u043d \u0441 \u043f\u0440\u0438\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u0435\u043c AI \u043f\u043e \u0444\u043e\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u044f\u043c \u043a\u0440\u0438\u0441\u0442\u0430\u043b\u043b\u0430 \u0432 \u0432\u044b\u0441\u043e\u043a\u043e\u043c \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u0438, \u0430 \u043b\u043e\u0433\u0438\u043a\u0430 \u0440\u0430\u0431\u043e\u0442\u044b \u0440\u0430\u0437\u043e\u0431\u0440\u0430\u043d\u0430 \u0447\u0435\u0440\u0435\u0437 \u0442\u0440\u0430\u0441\u0441\u0438\u0440\u043e\u0432\u043a\u0443 \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0439 \u043d\u0430 \u043a\u0440\u0438\u0441\u0442\u0430\u043b\u043b\u0435. \u041f\u043e\u0441\u0442\u0435\u043f\u0435\u043d\u043d\u043e \u0431\u044b\u043b\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u044b \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 \u043c\u0438\u043a\u0440\u043e\u043a\u043e\u043c\u0430\u043d\u0434 (\u03bc-ops), \u043f\u043e\u043b\u044f, \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u0438\u0441\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438 \u043c\u0430\u0440\u043a\u0435\u0440\u044b \u043a\u043e\u043d\u0446\u0430 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439. \u041d\u0430\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430","og:url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/vypolneno-dizassemblirovaniya-mikrokoda-i386-i-sozdan-otkrytyj-cpu-z386","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-05-23T22:25:21+00:00","article:modified_time":"2026-05-23T22:25:21+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/181694","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=181694"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/181694\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media\/181695"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=181694"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=181694"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=181694"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}