mirror of
https://github.com/nathanriggs/AppleIIAsm-Collection.git
synced 2024-11-30 15:49:55 +00:00
159 lines
3.3 KiB
Plaintext
159 lines
3.3 KiB
Plaintext
APUT82
|
|
PLA
|
|
STA RETADR
|
|
PLA
|
|
STA RETADR+1
|
|
PLA
|
|
STA :YIDX ; Y INDEX
|
|
DEC :YIDX
|
|
PLA
|
|
STA :XIDX ; X INDEX
|
|
DEC :XIDX
|
|
PLA
|
|
STA ADDR4 ; ADDRESS OF ARRAY
|
|
PLA
|
|
STA ADDR4+1
|
|
PLA
|
|
STA ADDR3 ; ADDRESS OF DATA
|
|
PLA ; TO BE COPIED
|
|
STA ADDR3+1
|
|
LDY #2
|
|
LDA (ADDR4),Y
|
|
STA :ESIZE
|
|
STA :MCAND
|
|
LDA #0
|
|
STA :MCAND+1
|
|
LDY #0
|
|
LDA (ADDR4),Y
|
|
STA :XLEN
|
|
INY
|
|
LDA (ADDR4),Y
|
|
STA :YLEN
|
|
LDY #0
|
|
LDA ERRCTRL
|
|
CMP #1
|
|
BEQ :CHKERR
|
|
JMP :ERREND
|
|
:CHKERR
|
|
LDA :XIDX ; IF X > MAX LEN
|
|
CMP :XLEN
|
|
BCS :XOVF
|
|
JMP :ERRCONT1
|
|
:XOVF
|
|
_ERR :E_SID;:E_XOVF;:E_DUMP;:XIDX;#15
|
|
:ERRCONT1
|
|
LDA :YIDX ; IF Y > MAX LEN
|
|
CMP :YLEN
|
|
BCS :YOVF
|
|
JMP :ERRCONT2
|
|
:YOVF
|
|
_ERR :E_SID;:E_YOVF;:E_DUMP;:XIDX;#15
|
|
:ERRCONT2
|
|
LDA :XIDX ; IF INDEX IS 0, ERR
|
|
CMP #255
|
|
BEQ :XOVF
|
|
:ERRCONT3
|
|
LDA :YIDX
|
|
CMP #255
|
|
BEQ :YOVF
|
|
:ERREND
|
|
LDA #0
|
|
TAY
|
|
STY SCRATCH
|
|
BEQ :ENTLP
|
|
:DOADD
|
|
CLC
|
|
ADC :YIDX
|
|
TAX
|
|
TYA
|
|
ADC SCRATCH
|
|
TAY
|
|
TXA
|
|
:LP
|
|
ASL :YIDX
|
|
ROL SCRATCH
|
|
:ENTLP
|
|
LSR :YLEN
|
|
BCS :DOADD
|
|
BNE :LP
|
|
STX :MLIER
|
|
STY :MLIER+1
|
|
CLC
|
|
LDA :MLIER
|
|
ADC :XIDX
|
|
STA :MLIER
|
|
BCC :CONTADD
|
|
LDA :MLIER+1
|
|
ADC #1
|
|
STA :MLIER+1
|
|
:CONTADD
|
|
LDA #0
|
|
STA :PROD+2
|
|
STA :PROD+3
|
|
LDX #$10
|
|
:SHIFTR LSR :MLIER+1
|
|
ROR :MLIER
|
|
BCC :ROTR
|
|
LDA :PROD+2
|
|
CLC
|
|
ADC :MCAND
|
|
STA :PROD+2
|
|
LDA :PROD+3
|
|
ADC :MCAND+1
|
|
:ROTR
|
|
ROR
|
|
STA :PROD+3
|
|
ROR :PROD+2
|
|
ROR :PROD+1
|
|
ROR :PROD
|
|
DEX
|
|
BNE :SHIFTR
|
|
CLC
|
|
INC :PROD ; INCREASE BY 3
|
|
INC :PROD
|
|
INC :PROD
|
|
BCC :NOCAR
|
|
INC :PROD+1
|
|
:NOCAR
|
|
CLC
|
|
LDA :PROD
|
|
ADC ADDR4
|
|
STA :PROD
|
|
LDA :PROD+1
|
|
ADC ADDR4+1
|
|
STA :PROD+1
|
|
LDA :PROD
|
|
LDY :PROD
|
|
LDX :PROD+1
|
|
STY ADDR2
|
|
STX ADDR2+1
|
|
LDY #0
|
|
LDX #0
|
|
:CLP
|
|
LDA (ADDR3),Y
|
|
STA (ADDR2),Y
|
|
INY
|
|
CPY :ESIZE
|
|
BNE :CLP
|
|
LDA RETADR+1
|
|
PHA
|
|
LDA RETADR
|
|
PHA
|
|
LDX ADDR2+1
|
|
LDY ADDR2
|
|
LDA :ESIZE
|
|
RTS
|
|
:ESIZE DS 1
|
|
:XIDX DS 1
|
|
:YIDX DS 1
|
|
:MCAND DS 2
|
|
:MLIER DS 2
|
|
:PROD DS 4
|
|
:XLEN DS 1
|
|
:YLEN DS 1
|
|
:E_SID ASC "APUT82 (PUT82 MACRO)",00
|
|
:E_DUMP ASC ":XIDX(1) :YIDX(1) :MCAND(2) :MLIER(2)"
|
|
ASC ":PROD(4) :XLEN(1) :YLEN(1)",00
|
|
:E_XOVF ASC "OUT OF BOUNDS! X > MAXIMUM OR IS 0.",00
|
|
:E_YOVF ASC "OUT OF BOUNDS! Y > MAX OR IS 0.",00
|