步进电机启动停止正反转控制程序的汇编语言的实现.doc

DELAY 1MS MACRO TIME；延时宏命令LOCAL AALOCAL BBPUSH CXMOV CX,TIMEAA:PUSH CXMOV CX,1000BB:NOPLOOP BBPOP CXLOOP AAPOP CXENDM DATA SEGMENTTABA DB 01H,03H,02H,06H,04H,05H；正转的模型TABB DB 05H,04H,06H,02H,03H,01H；反转的模型DATA ENDSCODE SEGMENTZZ PROC NEARPUSH DSMOV AX,DATAMOV DS,AXMOV AX,0PUSH AXMOV DX,203HMOV AL,80HOUT DX,AL；8255的控制字设定MOV DX,200HMOV AL,0OUT DX,AL；先输出制动命令MOV CX,360；设定正转步数DD:MO