{"id":930427,"date":"2024-01-30T17:35:40","date_gmt":"2024-01-30T16:35:40","guid":{"rendered":"https:\/\/blog.darkbyte.sk\/?p=930427"},"modified":"2024-01-31T07:49:01","modified_gmt":"2024-01-31T06:49:01","slug":"gbs-control-lacny-upscaler-pre-vase-retropocitace","status":"publish","type":"post","link":"https:\/\/blog.darkbyte.sk\/?p=930427","title":{"rendered":"GBS Control – lacn\u00fd upscaler pre va\u0161e retropo\u010d\u00edta\u010de"},"content":{"rendered":"

Ak h\u013ead\u00e1te upscaler \/ scandoubler, ktor\u00fd nezruinuje va\u0161u pe\u0148a\u017eenku a nerob\u00ed v\u00e1m probl\u00e9m trocha bastlenia, tak GBS Control<\/a> je pravdepodobne to \u010do h\u013ead\u00e1te. Nasko\u010dil som na aktu\u00e1lnu vlnu jeho popularity, poskladal som si ho, vysk\u00fa\u0161al a mus\u00edm uzna\u0165, \u017ee je celkom pou\u017eite\u013en\u00fd.<\/p>\n

<\/p>\n

U\u017e nejak\u00fd ten piatok vlastn\u00edm \u0161pi\u010dkov\u00fd OSSC<\/a>, ktor\u00e9mu neviem ni\u010d vytkn\u00fa\u0165. Funguje skvelo so v\u0161etk\u00fdm, \u010do som k nemu pripojil a m\u00e1 u\u017e HDMI v\u00fdstup, tak\u017ee sa nemus\u00edm ob\u00e1va\u0165 doby, ke\u010f mi vykap\u00fa v\u0161etky VGA monitory. Je to jedno z t\u00fdch drah\u0161\u00edch zariaden\u00ed a kupoval som ho e\u0161te v p\u00f4vodnej, otvorenej sendvi\u010dovej kon\u0161trukcii a tak si ho \u0161etr\u00edm. Preto som h\u013eadal nejak\u00fa alternat\u00edvu, ktor\u00fa vyu\u017eijem na pr\u00e1cu, na zrazy a nebudem si musie\u0165 d\u00e1va\u0165 na to a\u017e tak\u00fd pozor. A tak som natrafil na GBS Control<\/a>.<\/p>\n

Jeho z\u00e1kladom je lacn\u00fd RGBS to VGA konvertor GBS8200 (alebo GBS8220), na ktor\u00fd sa dobastl\u00ed modul s ESP8266 a clock gener\u00e1tor Si5351. Volite\u013en\u00fd je potom e\u0161te mal\u00fd OLED display a rota\u010dn\u00fd enk\u00f3der. Po zostaven\u00ed to funguje tak, \u017ee do ESP8266 sa nahr\u00e1 \u0161peci\u00e1lny firmware, ktor\u00fd prevezme kontrolu nad GBS a m\u00e1 \u010faleko lep\u0161ie mo\u017enosti, ako p\u00f4vodn\u00fd firmware v GBS. Za jeho najv\u00e4\u010d\u0161iu nev\u00fdhodu pova\u017eujem ovl\u00e1danie. Ak nem\u00e1te pripojen\u00fd OLED display a oto\u010dn\u00fd ovl\u00e1da\u010d, jedin\u00e1 mo\u017enos\u0165 je ovl\u00e1danie cez WebGUI. ESP8266 po \u0161tarte sp\u00fa\u0161\u0165a vlastn\u00fa WiFi s n\u00e1zvom gbscontrol<\/em><\/strong>, na ktor\u00fa sa pripoj\u00edte a potom norm\u00e1lne cez browser si nastavujete vlastnosti upscalera. Ale ani s OLED displayom si ve\u013emi nepolep\u0161\u00edte, preto\u017ee konfigura\u010dn\u00e9 menu je tam ve\u013emi oklie\u0161ten\u00e9 (zatia\u013e). <\/p>\n

Ale t\u00fdm asi nev\u00fdhody kon\u010dia. Je mnoh\u00fdmi \u013eudmi potvrden\u00e9, \u017ee toto zobrazovadlo si s minimom tweakovania porad\u00ed so v\u0161etk\u00fdmi mo\u017en\u00fdmi osembi\u0165\u00e1kmi, konzolami, Amigami, dokonca aj s Atari \ud83d\ude42 Ja som ho zatia\u013e sk\u00fa\u0161al len so ZXS +2 a KAY1024, lebo k t\u00fdm m\u00e1m spraven\u00e9 k\u00e1ble k m\u00f4jmu star\u00e9mu GBS8200 a po pr\u00edslu\u0161nom doladen\u00ed cez nastavenia, som z nich dostal naozaj pekn\u00fd a stabiln\u00fd obraz. Ale dos\u0165 bolo kecania, po\u010fme si GBS Control zbastli\u0165.<\/p>\n

Ak to budete pou\u017e\u00edva\u0165 preva\u017ene so ZXS128k (+2\/+2A\/+3\/QL), potrebujete na stavbu tieto komponenty:<\/p>\n

  • 1x GBS8200<\/a><\/li>\n
  • 1x ESP8266 WeMos D1 Mini<\/a><\/li>\n
  • 1x Si5351 I2C clock generator<\/a><\/li>\n
  • 1x 0.96″ 128*64 OLED I2C display<\/a><\/li>\n
  • 1x EC11 rotary encoder<\/a><\/li>\n
  • 2x kondenz\u00e1tor elektrolytick\u00fd THT, 0.47\u00b5F\/50V<\/a><\/li>\n
  • 1x kondenz\u00e1tor tantalov\u00fd SMD 1206, 10\u00b5F\/16V<\/a><\/li>\n
  • 4x kondenz\u00e1tor keramick\u00fd SMD 0805, 10\u00b5F\/10V<\/a><\/li>\n
  • 1x rezistor SMD 0805, 75\u03a9 125mW<\/a><\/li>\n
  • 4x rezistor THT, 75\u03a9 250mW<\/a><\/li>\n
  • 1x z\u00e1suvka DIN, 5 pin, 180\u00b0, na panel<\/a><\/li>\n
  • 1x vidlica DIN, 5 pin, 180\u00b0, na k\u00e1bel<\/a><\/li>\n
  • 1x vidlica DIN, 8 pin, 270\u00b0, na k\u00e1bel<\/a><\/li>\n
  • 6 \u017eilov\u00fd, tienen\u00fd k\u00e1bel<\/a><\/li>\n
  • 1 \u017eilov\u00fd, 0.2mm k\u00e1bel<\/a><\/li>\n

    Ak chcete vyu\u017e\u00edva\u0165 nejak\u00e9 va\u0161e existuj\u00face SCART k\u00e1ble, tak si budete musie\u0165 vyrobi\u0165 aj sync stripper, preto\u017ee v SCART konektore ch\u00fdba CSYNC. Ja t\u00fato variantu zatia\u013e nevyu\u017e\u00edvam, ale potrebujete k tomu e\u0161te SCART konektor do panelu, LM1881, rezistory 75\u03a9 a 470\u03a9, keramick\u00fd kondenz\u00e1tor 100nF a k\u00fasok unverz\u00e1lneho PCB. Podrobnej\u0161ie sa tomu venuje Tom Dalby na svojej str\u00e1nke o prip\u00e1jan\u00ed QL ku GBS8200<\/a>. Plat\u00ed to ur\u010dite aj pre Toastrack, pre +2\/+2A\/+3 bude mo\u017eno treba nejak\u00e9 rezistory.<\/p>\n

    Na str\u00e1nkach GBS Control<\/a> n\u00e1jdete samozrejme aj popis ako to v\u0161etko zostavi\u0165, ale povedal som si \u017ee neu\u0161kod\u00ed ke\u010f nafot\u00edm, ako som to staval ja. Nie je to ni\u010d zlo\u017eit\u00e9 a za nejak\u00fa hodinku som to mal postaven\u00e9. Budete v\u0161ak potrebova\u0165 pevn\u00e9 ruky, pinzetu, mikrop\u00e1jku a ak m\u00e1te tak\u00e9 nani\u010d o\u010di ako ja, tak aj lupu, alebo digit\u00e1lny mikroskop<\/a>.<\/p>\n

    Postup na domovsk\u00fdch str\u00e1nkach je dos\u0165 chaotick\u00fd, preto ja som postupoval mierne odli\u0161n\u00fdm sp\u00f4sobom. Aj m\u00f4j GBS trpel na oscil\u00e1ciu LDO, tak\u017ee som si najprv vymenil nevyhovuj\u00faci C11<\/em><\/strong> za 10\u00b5F. Nemal som elektrolytick\u00fd, tak posl\u00fa\u017eil aj tantalov\u00fd a oscil\u00e1cia je pre\u010d.
    \n    \"C11\"<\/a><\/p>\n

    Potom som upravil termin\u00e1ciu synchroniz\u00e1cie na 75\u03a9, preto\u017ee z v\u00fdroby som tam mal obludn\u00fdch 2k2. Tie\u017e som ni\u010d nikde nehr\u010davil, ale som p\u00f4vodn\u00fd rezistor R34<\/em><\/strong> odstr\u00e1nil a namiesto neho osadil spr\u00e1vny.\"R34\"<\/a><\/p>\n

    Ako \u010fal\u0161\u00ed krok odpor\u00fa\u010daj\u00fa zv\u00e4\u010d\u0161i\u0165 kapacitu filtra\u010dn\u00fdch kondenz\u00e1torov C23, C41, C42<\/em><\/strong> a C48<\/em><\/strong>. Robia to tam pre m\u0148a nevzh\u013eadn\u00fdm sp\u00f4sobom tak, \u017ee na chrb\u00e1t p\u00f4vodn\u00fdm 100nF kondenz\u00e1torom prisp\u00e1jkuj\u00fa \u010fal\u0161\u00ed 10\u00b5F. Ja tak\u00e9 gr\u010de nem\u00e1m r\u00e1d, tak som p\u00f4vodn\u00e9 100nF kondenz\u00e1tory odstr\u00e1nil a nahradil ich t\u00fdmi s kapacitou 10\u00b5F.\"C23,<\/a><\/p>\n

    N\u00e1sledne som si prisp\u00e1jkoval tenk\u00fd k\u00e1blik na pin PCLKIN<\/strong><\/em> hlavn\u00e9ho \u010dipu TrueView. Aby sa mi pri \u010fal\u0161ej manipul\u00e1cii s doskou hne\u010f neurval, zaistil som ho kvapkou tavn\u00e9ho lepidla.\"C48,<\/a><\/p>\n

    Ako \u010fal\u0161\u00ed bod som prisp\u00e1jkoval tenk\u00fd k\u00e1blik na piny SDA<\/em><\/strong>, SCL<\/em><\/strong> a DEBUG<\/em><\/strong> controllera Myson. Rovnako som si ich poistil kvapkami tavn\u00e9ho lepidla.\"SCL,<\/a><\/p>\n

    \u00dapravy dosky som zakon\u010dil odstr\u00e1nen\u00edm trimrov na vstupe a ich premosten\u00edm. Ich funkciu \u00faplne preber\u00e1 ESP8266, tak\u017ee u\u017e nie s\u00fa potrebn\u00e9.\"Trimre\"<\/a><\/p>\n

    No a teraz by malo nasledova\u0165 pripojenie clock gener\u00e1tora a ESP8266 modulu. Maj\u00fa na sebe vlastn\u00e9 3V3 regul\u00e1tory a mnoho \u013eud\u00ed to sprav\u00ed pod\u013ea n\u00e1vodu tak, \u017ee to pripoja priamo na zdroj GBS, ale ukr\u00e1tia sa t\u00fdm o mo\u017enos\u0165 nap\u00e1ja\u0165 GBS aj in\u00fdm ako 5V zdrojom. P\u00f4vodn\u00fd GBS toti\u017e umo\u017e\u0148uje pou\u017eitie \u013eubovo\u013en\u00e9ho zdroja 5V-12V. Po takejto \u00faprave 9V alebo 12V zdroj u\u017e nie je mo\u017en\u00e9 pou\u017ei\u0165, lebo vstavan\u00e9 3V3 regul\u00e1tory na Si5351 a ESP8266 by rozdrapilo. Ja som o t\u00fato mo\u017enos\u0165 nechcel pr\u00eds\u0165 a tak som si to spravil po svojom. Pridal som si na dosku mal\u00fd 1A DC-DC converter a nastavil som ho na 5V pri nap\u00e1jan\u00ed GBS z 12V zdroja. V\u00fdhoda je t\u00e1, \u017ee aj pri nap\u00e1jan\u00ed GBS z 5V zdroja ten converter dod\u00e1 uspokojiv\u00fdch 4.4-4.6V, ktor\u00e9 bez probl\u00e9mu sta\u010dia na nap\u00e1janie oboch prid\u00e1van\u00fdch modulov.\"DC-DC\"<\/a><\/p>\n

    No a nakoniec som prilepil hrubou obojstrannou p\u00e1skou 3M oba prid\u00e1van\u00e9 moduly na vhodn\u00e9 miesta na GBS a poprip\u00e1jal som ich. Nepochop\u00edm, pre\u010do je v n\u00e1vode gener\u00e1tor clocku primontovan\u00fd na chladi\u010d \u010dipu TrueView. Ten k\u00fari dos\u0165 na to, aby v\u00e1m ten gener\u00e1tor \u010dasom pomaly upiekol a druhak asi nechcete zdroj interferenci\u00ed rovno nad hlavn\u00fdm \u010dipom upscalera, ktor\u00e9mu DRAM interface beh\u00e1 na 166MHz. Ove\u013ea lep\u0161ie je ho prilepi\u0165 na Myson controller, ktor\u00fd sa nehreje v\u00f4bec. Modul ESP8266 som prilepil priamo na plo\u0161\u00e1k. Trocha som sa ob\u00e1val o vy\u017earovac\u00ed diagram wifiny, lebo som ho nalepil hore nohami, ale zjavne mu to neu\u0161kodilo, lebo sa viem na neho v pohode pripoji\u0165. Ja som na prepojenie nap\u00e1jania modulov pou\u017eil 0.5mm k\u00e1bliky, ale nie je to nutn\u00e9. M\u00f4\u017eete to v\u0161etko posp\u00e1ja\u0165 0.2mm k\u00e1blikom. Ani SCL\/SDA pre ESP8266 netreba krimpova\u0165 ako to m\u00e1m ja, ale sta\u010d\u00ed len posp\u00e1ja\u0165.\"GBS<\/a><\/p>\n

    Nakoniec som si e\u0161te spravil k\u00e1blik z GBS pinheadra na p\u00e4\u0165kol\u00edk DIN do panelu a t\u00fdm som mal v\u0161etko sp\u00e1jkovanie hotov\u00e9. Nikde sa o tom v n\u00e1vode nep\u00ed\u0161e (alebo som to prehliadol), ale na hociktorom vstupe \u010dipu TrueView m\u00f4\u017ee by\u0165 maxim\u00e1lne VDD+0.3V, teda 3.6V. Prip\u00e1ja\u0165 k nemu napriamo TLL RGB teda nie je ve\u013emi dobr\u00fd n\u00e1pad. S\u00edce to funguje (sk\u00fa\u0161al som to) a TrueView m\u00e1 75\u03a9 termin\u00e1ciu a zrejme aj vn\u00fatorn\u00fa ochranu vstupov, ale pod\u013ea m\u0148a je lep\u0161ie tie \u00farovne tro\u0161ka zrazi\u0165. Ja som si teda vzor\u010dekom pre deli\u010de vyr\u00e1tal, \u017ee pre 3.6V sta\u010d\u00ed v tom p\u00e4\u0165kol\u00edku zaradi\u0165 e\u0161te 75\u03a9 ochrann\u00e9 rezistory. TrueView nebude tak\u00fd na\u0161ponovan\u00fd a vstup bude relat\u00edvne odoln\u00fd aj proti pr\u00edpadn\u00fdm kopancom a statike.<\/p>\n

    E\u0161te bolo treba samozrejme pod\u013ea n\u00e1vodu nahra\u0165 do ESP8266 nov\u00fd firmware a zalo\u017ei\u0165 debug jumper. Nenarazil som na \u017eiadne probl\u00e9my a upscaler mi fungoval na prv\u00fd \u0161up, tak\u017ee o tomto kroku sa u\u017e nebudem ve\u013emi rozpisova\u0165. Sn\u00e1\u010f len pripomienka, \u017ee pri in\u0161talovan\u00ed kni\u017enice esp8266 by ESP8266 Community<\/em><\/strong> si nezabudnite zvoli\u0165 star\u0161iu verziu 2.6.3, preto\u017ee automaticky to pon\u00faka najnov\u0161iu a s \u0148ou potom firmware nefunguje spr\u00e1vne. Rovnako si treba d\u00e1va\u0165 pozor na automatick\u00e9 aktualiz\u00e1cie, preto\u017ee vzh\u013eadom na potrebn\u00e9 star\u0161ie verzie kni\u017en\u00edc ich automatick\u00fa aktualiz\u00e1ciu ur\u010dite nechcete.<\/p>\n

    Po rozbehan\u00ed som vysk\u00fa\u0161al pripoji\u0165 +2 a mus\u00edm poveda\u0165, \u017ee kvalita obrazu je na tak\u00fdto bastl\u0161tyk p\u00f4sobiv\u00e1 a je o dobr\u00fdch 60% lep\u0161ia, ako m\u00e1 neupraven\u00fd GBS. Jedin\u00e9 \u010do som musel spravi\u0165 je, \u017ee som vypol AGC a manu\u00e1lne som si nastavil gain, lebo AGC to vyp\u00e1lil tak, \u017ee nebol rozdiel medzi farbami s brightom a bez brigthu. Podobne som dopadol aj ke\u010f som pripojl KAY1024. Autori s tak\u00fdmito vecami r\u00e1tali, tak\u017ee m\u00e1te k dispoz\u00edcii profily, kam si m\u00f4\u017eete tieto nastavenia uklada\u0165.<\/p>\n

    Na hlb\u0161ie testovanie zatia\u013e nebol \u010das. Pre m\u0148a to bol len tak\u00fd proof of concept, ale v\u00fdsledok je nato\u013eko dobr\u00fd, \u017ee sa to naozaj oplat\u00ed. Zost\u00e1va u\u017e len vytla\u010di\u0165 nejak\u00fa krabi\u010dku a potom poriadne posk\u00fa\u0161a\u0165 \u010do to dok\u00e1\u017ee.<\/p>\n

    \u010co doda\u0165 na z\u00e1ver? Asi ni\u010d netreba. Ak ner\u00e1tam materi\u00e1l na k\u00e1ble, tak ma to cel\u00e9 vy\u0161lo na 38\u20ac. Za tie peniaze lep\u0161\u00ed upscaler nek\u00fapite.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Ak h\u013ead\u00e1te upscaler \/ scandoubler, ktor\u00fd nezruinuje va\u0161u pe\u0148a\u017eenku a nerob\u00ed v\u00e1m probl\u00e9m trocha bastlenia, tak GBS Control je pravdepodobne to \u010do h\u013ead\u00e1te. Nasko\u010dil som na aktu\u00e1lnu vlnu jeho popularity, poskladal som si ho, vysk\u00fa\u0161al a mus\u00edm uzna\u0165, \u017ee je celkom pou\u017eite\u013en\u00fd.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-930427","post","type-post","status-publish","format-standard","hentry","category-ostatne"],"_links":{"self":[{"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=\/wp\/v2\/posts\/930427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=930427"}],"version-history":[{"count":26,"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=\/wp\/v2\/posts\/930427\/revisions"}],"predecessor-version":[{"id":930461,"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=\/wp\/v2\/posts\/930427\/revisions\/930461"}],"wp:attachment":[{"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=930427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=930427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.darkbyte.sk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=930427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}