?? 7.1.8浮點(diǎn)倒數(shù)函數(shù).txt
字號(hào):
FRCP:
MOV A,@R0
MOV C,ACC.7
MOV 1FH,C
MOV C,ACC.6
MOV ACC.7,C
MOV R5,A
INC R0
MOV A,@R0
MOV R6,A
INC R0
MOV A,@R0
MOV R7,A
DEC R0
DEC R0
ORL A,R6
JNZ RCP
SETB OV
RET
RCP:
MOV A,R6
JB ACC.7,RCP2
CLR C
MOV A,R7
RLC A
MOV R7,A
MOV A,R6
RLC A
MOV R6,A
DEC R5
SJMP RCP
RCP2:
MOV R2,#1
MOV R3,#80H
MOV R4,#0
LCALL DIV3
MOV0:
INC R0
INC R0
MOV A,R4
MOV @R0,A
DEC R0
MOV A,R3
MOV @R0,A
DEC R0
MOV A,R2
MOV C,1FH
MOV ACC.7,C
MOV @R0,A
CLR ACC.7
CLR OV
CJNE A,#3FH,MV01
SETB OV
MV01:
MOV A,@R0
RET
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