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https://github.com/Zeal-Operating-System/ZealOS.git
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58 lines
4.6 KiB
HTML
Executable file
58 lines
4.6 KiB
HTML
Executable file
<!DOCTYPE HTML>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html;charset=US-ASCII">
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<meta name="generator" content="ZealOS V0.07">
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<style type="text/css">
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body {background-color:#000000;}
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.cF0{color:#ffffff;background-color:#000000;}
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.cF1{color:#3465a4;background-color:#000000;}
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.cF2{color:#4e9a06;background-color:#000000;}
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.cF3{color:#06989a;background-color:#000000;}
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.cF4{color:#a24444;background-color:#000000;}
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.cF5{color:#75507b;background-color:#000000;}
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.cF6{color:#ce982f;background-color:#000000;}
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.cF7{color:#bcc0b9;background-color:#000000;}
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.cF8{color:#555753;background-color:#000000;}
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.cF9{color:#729fcf;background-color:#000000;}
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.cFA{color:#82bc49;background-color:#000000;}
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.cFB{color:#34e2e2;background-color:#000000;}
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.cFC{color:#ac3535;background-color:#000000;}
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.cFD{color:#ad7fa8;background-color:#000000;}
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.cFE{color:#fce94f;background-color:#000000;}
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.cFF{color:#000000;background-color:#000000;}
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</style>
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</head>
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<body>
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<pre style="font-family:monospace;font-size:12pt">
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<a name="l1"></a><span class=cF5> Char Overview</span><span class=cF0>
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<a name="l2"></a>
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<a name="l3"></a>A </span><span class=cF2>Char</span><span class=cF0>acter is a single byte holding an ASCII code for a letter, num or sym. The </span><span class=cF2>ZealOS</span><span class=cF0> term is a </span><span class=cF2>U8</span><span class=cF0>.
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<a name="l4"></a>
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<a name="l5"></a>Standard ASCII values range from 0 to 127. Values below 32 are ctrl key's. So, an ASCII #3 is a </span><span class=cF2><CTRL-c></span><span class=cF0>. ZealOS uses a
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<a name="l6"></a>couple nonstandard values below 32. See </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l4095"><span class=cF4>Char Definitions</span></a><span class=cF0>.
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<a name="l7"></a>
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<a name="l8"></a>ASCII #5 is the cursor location in a saved file.
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<a name="l9"></a>ASCII #28 is </span><span class=cF2><SHIFT-ESC></span><span class=cF0>.
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<a name="l10"></a>
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<a name="l11"></a>ZealOS ASCII is 8-bit instead of 7-bit, so it also uses the range from 128-255. Press </span><span class=cF2><CTRL-ALT-a></span><span class=cF0> to see shapes for 128-255.
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<a name="l12"></a>Technically, </span><span class=cF2><CTRL-ALT-a></span><span class=cF0> are </span><span class=cF4><u>screen codes</u></span><span class=cF0>.
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<a name="l13"></a>
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<a name="l14"></a>A </span><span class=cF2>Key</span><span class=cF0> is typically specified with a scan code. ZealOS scan codes contain the key value in the lowest </span><span class=cF2>U8</span><span class=cF0>, and flags in the
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<a name="l15"></a>upper 3 bytes. See </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l4149"><span class=cF4>Scan Code Flags</span></a><span class=cF0> and </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l4183"><span class=cF4>Scan Codes</span></a><span class=cF0>.
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<a name="l16"></a>
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<a name="l17"></a>ZealOS stores scan codes in 8 bytes.
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<a name="l18"></a> </span><span class=cF2>Byte 0</span><span class=cF0> is the code. NumPad keys, SHIFT, ALT, CTRL and GUI keys combined.
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<a name="l19"></a> </span><span class=cF2>Byte 1-3</span><span class=cF0> are </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l4132"><span class=cF4>flags</span></a><span class=cF0>
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<a name="l20"></a>
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<a name="l21"></a>The upper 4-bytes are copied from lower 4-bytes.
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<a name="l22"></a> </span><span class=cF2>Byte 4</span><span class=cF0> is the code. Left, Right and NumPad keys distinct.
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<a name="l23"></a> </span><span class=cF2>Byte 5-7</span><span class=cF0> are </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l4132"><span class=cF4>flags</span></a><span class=cF0>
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<a name="l24"></a>
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<a name="l25"></a>Run the program </span><a href="https://tomawezome.github.io/ZealOS/Demo/MessageLoop.CC.html#l1"><span class=cF4>::/Demo/MessageLoop.CC</span></a><span class=cF0> to examine scan code. Press </span><span class=cF2><CTRL-SHIFT-l></span><span class=cF0> and "Insert ASCII/ScanCode".
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<a name="l26"></a>
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<a name="l27"></a>See </span><a href="https://tomawezome.github.io/ZealOS/Doc/KeyAlloc.DD.html#l1"><span class=cF4>Key Allocations</span></a><span class=cF0> and </span><a href="https://tomawezome.github.io/ZealOS/Kernel/KernelA.HH.html#l3632"><span class=cF4>CKbdStateGlobals</span></a><span class=cF0>.
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<a name="l28"></a>
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<a name="l29"></a>A </span><span class=cF2>String</span><span class=cF0> is a bunch of ASCII characters terminated with a zero.
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</span></pre></body>
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</html>
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