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add misc code at f699

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Zellyn Hunter 2014-06-09 17:39:10 -07:00
parent 0d7d92c281
commit 2f2fdcbccd
1 changed files with 32 additions and 0 deletions
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source/redbook/misc-f699.asm Normal file
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* MISCELLANEOUS ROUTINES AT $F699
* IN THE APPLE II INTEGER BASIC ROM
ORG $F669
* ADDRESSES
ASAVE EQU $56
XSAVE EQU $57
YSAVE EQU $58
PSAVE EQU $59
STACK EQU $100
*
SAVE STY YSAVE
STX XSAVE
STA ASAVE
PHP
PLA
STA PSAVE
TSX
INX
INX
LDA $0100,X
ASL
ASL
ASL
ASL
RTS
RESTORE LDY YSAVE
LDX XSAVE
LDA PSAVE
PHA
LDA ASAVE
PLP
RTS