<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><title>Re: přístup na byty v int C</title><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=CS link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>>> </span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tak konkrétně, vynechme načítání z eeprom, a dejme tomu, že do int potřebuji zapsat 0xAA a 0xBB aby výsledek byl 0xAABB. Jde o PIC, hitech kompiler. V asm jsou to 4 řádky, hitech si stím moc neporadí. Chci mu napovědět. Ale nějak nenapadá jak. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Zopakuji:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tohle nemusi bez agresivni optimalizace nemusi „projit“.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Linear.Krok = 0xAA;<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Linear.Krok <<= 8;<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Linear.Krok |= 0xBB;<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Tohle by zase naopak pokud jsou povolene optimalizace melo „projit“. Tato konstrukce se bezne pouziva.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Linear.Krok = (0xAA<<= 8) | 0xBB;<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Jedinou penalizaci pri optimalizaci by mohla byt ta struktura, vic me nenapada.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ostatne zkus to prohnat kompilatorem a vysledky zverejnit.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Radek (benedikt2hw.cz)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></body></html>