{"id":23682,"date":"2022-11-27T19:55:27","date_gmt":"2022-11-27T14:25:27","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-explain-how-the-following-program-works\/"},"modified":"2022-11-27T19:55:27","modified_gmt":"2022-11-27T14:25:27","slug":"solved-explain-how-the-following-program-works","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-explain-how-the-following-program-works\/","title":{"rendered":"[Solved] Explain how the following program works?"},"content":{"rendered":"

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I hope that this explanations can give you some hints. By analyzing the code functions you should be able to figure out the rest.<\/p>\n

VGA_WIDTH<\/code> – width of the screen;
\nVGA_HEIGHT<\/code> – height of the screen <\/p>\n

x<\/code> – horizontal position of the character on the screen<\/p>\n

y<\/code> – vertical position of the character on the screen<\/p>\n

Since VGA card keeps all characters in a linear memory it has to use x<\/code>, y<\/code>,
\nVGA_WIDTH<\/code> and VGA_WIDTH<\/code> to calculate an index for its internal buffer to store a character at the proper memory location. <\/p>\n

void terminal_initialize<\/code> – this function initializes your terminal. It just puts spaces on the entire screen.<\/p>\n

void terminal_putentryat(char c, uint8_t color, size_t x, size_t y)\n<\/code><\/pre>\n
puts a character c<\/code>, on the screen at the location (x<\/code>,y<\/code>). <\/p>\n
void terminal_putchar(char c)<\/code> – it puts a character c<\/code>, at the screen. <\/p>\n
This function  has terminal_column<\/code> and terminal_row<\/code> variables to track the current terminal column and row.<\/p>\n<\/p><\/div>\n
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            <\/span> <\/p><\/div>\n<\/div>\n
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solved Explain how the following program works? <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] I hope that this explanations can give you some hints. By analyzing the code functions you should be able to figure out the rest. VGA_WIDTH – width of the screen; VGA_HEIGHT – height of the screen x – horizontal position of the character on the screen y – vertical position of the character on … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[5075,324,5074,1367,5076],"class_list":["post-23682","post","type-post","status-publish","format-standard","hentry","category-solved","tag-bare-metal","tag-c","tag-kernel","tag-operating-system","tag-vga"],"yoast_head":"\n[Solved] Explain how the following program works? - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-explain-how-the-following-program-works\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Explain how the following program works? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] I hope that this explanations can give you some hints. 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