mirror of
https://github.com/bobbimanners/emailler.git
synced 2024-08-29 15:29:18 +00:00
84 lines
2.4 KiB
HTML
84 lines
2.4 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 : ip65/copymem.s</h1><pre> utility routine to copy memory
|
|
</pre><h2 id="functions">functions</h2><table><tr><th>function</th><th>description</th></tr><tr><td id="copymem">copymem</td><td><pre>copy memory
|
|
inputs:
|
|
copy_src is address of buffer to copy from
|
|
copy_dest is address of buffer to copy to
|
|
AX = number of bytes to copy
|
|
outputs: none
|
|
</pre></td></tr></table><h2 id="variables">variables</h2><table><tr><th>variable</th><th>description</th><th>size (bytes)</th></tr><tr><td id="copy_dest">copy_dest</td><td> destination pointer
|
|
</td><td>2</td></tr><tr><td id="copy_src">copy_src</td><td> source pointer
|
|
</td><td>2</td></tr></table><h2>implementation</h2><pre id="code">; utility routine to copy memory
|
|
|
|
|
|
.export copymem
|
|
.exportzp copy_src
|
|
.exportzp copy_dest
|
|
|
|
|
|
.segment "IP65ZP" : zeropage
|
|
|
|
; pointers for copying
|
|
copy_src: .res 2 ; source pointer
|
|
copy_dest: .res 2 ; destination pointer
|
|
|
|
|
|
.bss
|
|
|
|
end: .res 1
|
|
|
|
|
|
.code
|
|
|
|
;copy memory
|
|
;inputs:
|
|
; copy_src is address of buffer to copy from
|
|
; copy_dest is address of buffer to copy to
|
|
; AX = number of bytes to copy
|
|
;outputs: none
|
|
copymem:
|
|
sta end
|
|
ldy #0
|
|
|
|
cpx #0
|
|
beq @tail
|
|
|
|
: lda (copy_src),y
|
|
sta (copy_dest),y
|
|
iny
|
|
bne :-
|
|
inc copy_src+1 ;next page
|
|
inc copy_dest+1 ;next page
|
|
dex
|
|
bne :-
|
|
|
|
@tail:
|
|
lda end
|
|
beq @done
|
|
|
|
: lda (copy_src),y
|
|
sta (copy_dest),y
|
|
iny
|
|
cpy end
|
|
bne :-
|
|
|
|
@done:
|
|
rts
|
|
|
|
|
|
|
|
;-- LICENSE FOR copymem.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 Per Olofsson,
|
|
; MagerValp@gmail.com.
|
|
; Portions created by the Initial Developer are Copyright (C) 2009
|
|
; Per Olofsson. All Rights Reserved.
|
|
; -- LICENSE END --
|
|
</pre></body></html> |