MCS-51单片机应用子程序：5.3.3双字节定点数转换成格式化浮点数

FXDTOFLT: MOV R2,A MOV A,@R0 MOV R3,A INC R0 MOV A,@R0 MOV R4,A DEC R0 FLTRLN: MOV A,R3 ORL A,R4 JNZ RLN1 MOV R2,#0C1H RET RLN1: MOV A,R3 JB ACC.7,RLN2 CLR C LCALL RL1 SJMP FLTRLN RLN2: CLR OV LJMP MOV0 RET