计算机控制
锯齿波形源码CODE SEGMENT ASSUME CS:CODESTART: MOV AX,8100H ;数据段 MOV DS,AX MOV AX,7000H ;8251串口寄存器，存储空间 7000H:8000H MOV ES,AXXOR AL,ALWAVE: XOR DX,DX ;0832口地址 0000H OUT DX,AL INC AL MOV AH,AL;保存AL内容 MOV DX,0080H ;0809口地址 0080H OUT DX,AL ;启动A/D转换 CALL DELAY in AL,DX MOV ES:[8000H],AL MOV AL,AH JMP WAVEDELAY: MOV CX,80h ;>100us L2: LOOP L2 RETCODE ENDS END START正弦波形查表数据TABLE:DB 128,131,133,136,138,141,143,146,148,151,153,155,158,160,163,165DB 167,170,172,174,177,179,181,183,185,187,189,191,193,195,197,199DB 201,203,204,206,208,209,211,212,214,215,216,218,219,220,221,222DB 223,224,225,226,227,227,228,228,229,229,230,230,231,231,231,231DB 231,231,231,231,231,230,230,229,229,228,228,227,227,226,225,224DB 223,222,221,220,219,218,216,215,214,212,211,209,208,206,204,203DB 201,199,197,195,193,191,189,187,185,183,181,179,177,174,172,170DB 167,165,163,160,158,155,153,151,148,146,143,141,138,136,133,131DB 128,125,123,120,118,115,113,110,108,105,103,101,98,96,93,91DB 89,86,84,82,79,77,75,73,71,69,67,65,63,61,59,57DB 55,53,52,50,48,47,45,44,42,41,40,38,37,36,35,34DB 33,32,31,30,29,29,28,28,27,27,26,26,25,25,25,25DB 25,25,25,25,25,26,26,27,27,28,28,29,29,30,31,32DB 33,34,35,36,37,38,40,41,42,44,45,47,48,50,52,53DB 55,57,59,61,63,65,67,69,71,73,75,77,79,82,84,86DB 89,91,93,96,98,101,103,105,108,110,113,115,118,120,123,125
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