39 lines
1.7 KiB
HTML
39 lines
1.7 KiB
HTML
<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">
|
|
|
|
.export ascii_to_native
|
|
.export native_to_ascii
|
|
|
|
;given an A2 Screen Code char in A, return equivalent ASCII
|
|
native_to_ascii:
|
|
;just strip high bit
|
|
and #$7f
|
|
rts
|
|
|
|
;given an ASCII char in A, return equivalent A2 Screen Code
|
|
ascii_to_native:
|
|
;set high bit
|
|
ora #$80
|
|
rts
|
|
|
|
|
|
|
|
|
|
;-- LICENSE FOR a2charconv.s --
|
|
; The contents of this file are subject to the Mozilla Public License
|
|
; Version 1.1 (the "License"); you may not use this file except in
|
|
; compliance with the License. You may obtain a copy of the License at
|
|
; http://www.mozilla.org/MPL/
|
|
;
|
|
; Software distributed under the License is distributed on an "AS IS"
|
|
; basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
|
|
; License for the specific language governing rights and limitations
|
|
; under the License.
|
|
;
|
|
; The Original Code is ip65.
|
|
;
|
|
; The Initial Developer of the Original Code is Jonno Downes,
|
|
; jonno@jamtronix.com.
|
|
; Portions created by the Initial Developer are Copyright (C) 2009
|
|
; Jonno Downes. All Rights Reserved.
|
|
; -- LICENSE END --
|
|
</pre></body></html> |