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39 lines
1.7 KiB
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39 lines
1.7 KiB
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<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"/><link rel="stylesheet" type="text/css" href="ca65-doc-style.css"/></head><body><a href="ref_index.html"><h1>ip65 technical reference</h1></a><h1>File : drivers/a2charconv.s</h1><h2 id="functions">functions</h2><table><tr><th>function</th><th>description</th></tr><tr><td id="ascii_to_native">ascii_to_native</td><td><pre>given an ASCII char in A, return equivalent A2 Screen Code
</pre></td></tr><tr><td id="native_to_ascii">native_to_ascii</td><td><pre>given an A2 Screen Code char in A, return equivalent ASCII
</pre></td></tr></table><h2>implementation</h2><pre id="code">
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.export ascii_to_native
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.export native_to_ascii
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;given an A2 Screen Code char in A, return equivalent ASCII
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native_to_ascii:
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;just strip high bit
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and #$7f
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rts
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;given an ASCII char in A, return equivalent A2 Screen Code
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ascii_to_native:
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;set high bit
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ora #$80
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rts
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;-- LICENSE FOR a2charconv.s --
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; The contents of this file are subject to the Mozilla Public License
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; Version 1.1 (the "License"); you may not use this file except in
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; compliance with the License. You may obtain a copy of the License at
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; http://www.mozilla.org/MPL/
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;
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; Software distributed under the License is distributed on an "AS IS"
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; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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; License for the specific language governing rights and limitations
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; under the License.
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;
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; The Original Code is ip65.
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;
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; The Initial Developer of the Original Code is Jonno Downes,
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; jonno@jamtronix.com.
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; Portions created by the Initial Developer are Copyright (C) 2009
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; Jonno Downes. All Rights Reserved.
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; -- LICENSE END --
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</pre></body></html>
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