![\"\"\/](\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXezIHXow_o3njMuWAwffykkIzD5zpXo67hhJ_jY7NjMhWFaL_hXFPGVR5UhPBARETg-8vxkVMid-0p4-6xDJ5DaxcUhmnp4oaCp4qNNusxhHoL-diFfy-MU6UFlCUzkyspdKFE_MQ?key=eos9vmYSHvUewzEGBYvG1lt_\")
<\/figure>\n\n\n\nTakto z\u00edskame hlavn\u00fa \u010das\u0165 programu S SDCC som sa tu u\u017e pred nejak\u00fdm \u010dasom hral v projekte \u010d\u00edta\u010dky SD karty na Centronics porte +3<\/a> (sakra to u\u017e m\u00e1 11 rokov), tak som si povedal, \u017ee je najvy\u0161\u0161\u00ed \u010das sa mu znovu pozrie\u0165 na z\u00fabok. Tento p\u00f4vodn\u00fd projekt som kompiloval vtedaj\u0161ou najnov\u0161ou verziou 3.4, no dnes m\u00e1m v distrib\u00facii Linuxu nain\u0161talovan\u00fa verziu 4.2.<\/p>\n\n\n\n V zdroj\u00e1koch od Richarda Moora sa nach\u00e1dza zop\u00e1r dynamick\u00fdch deklar\u00e1ci\u00ed ve\u013ekosti pol\u00ed (VLA), ktor\u00e9 N\u00e1sledne som len pridal rutiny na vykres\u013eovanie vypo\u010d\u00edtan\u00e9ho po\u013ea bodov na obrazovku cez PLOT rutinu v ROM a gener\u00e1tor bol v podstate hotov\u00fd. Predsa len prepisova\u0165 t\u00fdch 900 riadkov k\u00f3du v C do assembleru Z80, by mi zrejme zabralo viac ako jeden de\u0148.<\/p>\n\n\n\n Najviac \u010dasu som str\u00e1vil \u00fapravou prilinkov\u00e1van\u00fdch s\u00fa\u010dast\u00ed Z\u00e1vere\u010dn\u00e9 rozuzlenie: generovanie QR k\u00f3du verzie 3 s 29×29 segmentami trv\u00e1 na 3,5MHz Z80 nie\u010do cez 2 min\u00faty<\/strong>, tak\u017ee be\u017ea\u0165 to na re\u00e1lnom \u017eeleze je naozaj len pre trpezliv\u00fdch. Po objaven\u00ed sa QR k\u00f3du na obrazovke, sta\u010d\u00ed da\u0165 z Basicu Zdroj\u00e1ky pripraven\u00e9 na skompilovanie s\u00fa tu<\/a>. Libora Lasotu v\u00fdsledok m\u00f4jho sna\u017eenia v sobotu ve\u010der zaujal, tak\u017ee sa mo\u017eno \u010doskoro do\u010dk\u00e1me gener\u00e1tora aj na PMD 85 alebo SAPI.\u00a0<\/p>\n\n\n\n Pr\u00edjemn\u00e9 QR-kovanie, Motiv\u00e1ciou na toto cvi\u010denie bol sud piva, ktor\u00fd som doviezol na tohtoro\u010dn\u00fd Forever.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[6],"tags":[],"class_list":["post-931625","post","type-post","status-publish","format-standard","hentry","category-tema-3-software-php"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5aqy8-3Umd","jetpack_likes_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/sindik.at\/index.php?rest_route=\/wp\/v2\/posts\/931625","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sindik.at\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sindik.at\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sindik.at\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sindik.at\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=931625"}],"version-history":[{"count":1,"href":"https:\/\/sindik.at\/index.php?rest_route=\/wp\/v2\/posts\/931625\/revisions"}],"predecessor-version":[{"id":931628,"href":"https:\/\/sindik.at\/index.php?rest_route=\/wp\/v2\/posts\/931625\/revisions\/931628"}],"wp:attachment":[{"href":"https:\/\/sindik.at\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=931625"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sindik.at\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=931625"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sindik.at\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=931625"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}qrcode.c<\/code> a hlavi\u010dkov\u00fd s\u00fabor qrcode.h<\/code>. V pr\u00edkladoch sa potom objav\u00ed tie\u017e cca. 50 riadkov\u00fd ske\u010d QRCode.ino<\/code>. No a teraz nastal ten okamih ako toto v\u0161etko prenies\u0165 a skompilova\u0165 pre Spektrum.<\/p>\n\n\n\ngcc<\/code> skr\u00fdvaj\u00face sa \u201cpod kapotou\u201d Arduino IDE nem\u00e1 probl\u00e9m prechr\u00fasta\u0165, ale SDCC n\u00e1m s preh\u013eadom vyhubuje, aj ke\u010f mu \u0161pecifikujeme prep\u00edna\u010d \u2013std-c99<\/code>. Pavel Vymet\u00e1lek mi poradil prerobi\u0165 to na statick\u00fa deklar\u00e1ciu kon\u0161tantou a ke\u010f\u017ee klasick\u00e9 Arduino Uno s ATmega328 m\u00e1 dokopy len 2KiB RAM, tak som sa rozohnil a ka\u017ed\u00e9mu z t\u00fdch (tu\u0161\u00edm) piatich pol\u00ed doprial grandi\u00f3zne 2KiB v adresnom priestore Z80.<\/p>\n\n\n\ncrt0_zx.s<\/code>, putchar.s<\/code>, ktor\u00fdch \u0161trukt\u00fara sa oproti predch\u00e1dzaj\u00facej verzii 3.x zmenila, n\u00e1sledne som upravoval e\u0161te zostavovac\u00ed skript (build<\/code>), aby obsahoval len nevyhnut\u00e9 s\u00fa\u010dasti a tie\u017e obsahoval spr\u00e1vne cesty. Tie\u017e som sa trochu natr\u00e1pil, aby som vedel odovzda\u0165 parametre z Basicu do C. Tam mi u\u017e pomohol disassembling zostavenej bin\u00e1rky, aby som mohol napoukova\u0165 \u010do do QR k\u00f3du vlastne chcem da\u0165.<\/p>\n\n\n\n![\"\"](\"https:\/\/sindik.at\/wp-content\/uploads\/2025\/04\/QR_EnterText.png\")
<\/a><\/figure>\n\n\n\nCOPY<\/code> a m\u00e1me ho aj vo fyzickom svete, ak je teda pripojen\u00fd ZX printer alebo kompatibiln\u00fd.<\/p>\n\n\n\n![\"\"](\"https:\/\/sindik.at\/wp-content\/uploads\/2025\/04\/QR_Output.png\")
<\/a><\/figure>\n\n\n\n
V\u00fdsledn\u00e1 TAPka tu<\/a>.<\/p>\n\n\n\n
Ikon
<\/p>\n","protected":false},"excerpt":{"rendered":"