?? 5.3.4多字節二進制數轉換為浮點數.txt
字號:
MOV A,R7
MOV B,#08H
MUL AB
DEC A
INC R0
MOV @R0,A
NOM0:
DEC R0
MOV A,@R0
JNB ACC.7,LOOP1
JB ACC.6,LOOP4
LOOP0:
INC R0
RET
LOOP1:
JB ACC.6,LOOP0
INC R0
ACALL LOOP7
ACALL LOOP8
LOOP2:
JB ACC.6,LOOP0
INC R0
ACALL LOOP8
DJNZ R2,LOOP2
LOOP3:
INC R0
MOV @R0,#80H
RET
LOOP4:
ACALL LOOP7
LOOP5:
INC R0
ACALL LOOP8
DJNZ R2,LOOP6
AJMP LOOP3
LOOP6:
JB ACC.6,LOOP5
AJMP LOOP0
LOOP7:
MOV A,R7
MOV B,#80H
MUL AB
DEC A
MOV R2,A
RET
LOOP8:
MOV A,R7
MOV R6,A
MOV A,R0
CLR C
SUBB A,R7
MOV R0,A
CLR C
LOOP9:
MOV A,@R0
RLC A
MOV @R0,A
INC R0
DJNZ R6,LOOP9
DEC @R0
DEC R0
MOV A,@R0
RET
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