Trích:
Nguyên văn bởi stupid11
Bạn muốn giúp vấn đề gì.
|
Anh chỉ giáo cho em rõ thêm về một số đoạn code này với em chưa hiểu lắm
//char const ht[]={'0','1','2','3','4','5','6','7','8','9',' '};
// 0192: MOVF 26,W
0193: MOVWF 2D
0194: MOVLW 0A
0195: MOVWF 2E
0196: CALL 158
0197: MOVF 77,W
0198: MOVWF 28
.................... chuc=y/10;
0199: MOVF 26,W
019A: MOVWF 2D
019B: MOVLW 0A
019C: MOVWF 2E
019D: CALL 158
019E: MOVF 78,W
019F: MOVWF 27
.................... z=(x-y)*100;
01A0: CLRF 2E
01A1: MOVF 26,W
01A2: MOVWF 2D
01A3: CALL 050
01A4: BSF 03.1
01A5: MOVF 23,W
01A6: MOVWF 30
01A7: MOVF 22,W
01A8: MOVWF 2F
01A9: MOVF 21,W
01AA: MOVWF 2E
01AB: MOVF 20,W
01AC: MOVWF 2D
01AD: MOVF 7A,W
01AE: MOVWF 34
01AF: MOVF 79,W
01B0: MOVWF 33
01B1: MOVF 78,W
01B2: MOVWF 32
01B3: MOVF 77,W
01B4: MOVWF 31
*
02F5: MOVF 77,W
02F6: MOVWF 2D
02F7: MOVF 78,W
02F8: MOVWF 2E
02F9: MOVF 79,W
02FA: MOVWF 2F
02FB: MOVF 7A,W
02FC: MOVWF 30
02FD: MOVF 30,W
02FE: MOVWF 34
02FF: MOVF 2F,W
0300: MOVWF 33
0301: MOVF 2E,W
0302: MOVWF 32
0303: MOVF 2D,W
0304: MOVWF 31
0305: CLRF 38
0306: CLRF 37
0307: MOVLW 48
0308: MOVWF 36
0309: MOVLW 85
030A: MOVWF 35
*
037F: MOVF 7A,W
0380: MOVWF 30
0381: MOVF 79,W
0382: MOVWF 2F
0383: MOVF 78,W
0384: MOVWF 2E
0385: MOVF 77,W
0386: MOVWF 2D
0387: CALL 139
0388: MOVF 78,W
0389: MOVWF 2A
.................... le1=z/10;
038A: MOVF 2A,W
038B: MOVWF 2D
038C: MOVLW 0A
038D: MOVWF 2E
038E: CALL 158
038F: MOVF 78,W
0390: MOVWF 2B
.................... le2=z%10;
0391: MOVF 2A,W
0392: MOVWF 2D
0393: MOVLW 0A
0394: MOVWF 2E
0395: CALL 158
0396: MOVF 77,W
0397: MOVWF 2C
.................... portb=0x38;
0398: MOVLW 38
0399: MOVWF 06
.................... lenh();
039A: CALL 182
.................... portb=0x0e;
039B: MOVLW 0E
039C: MOVWF 06
.................... lenh();
039D: CALL 182
.................... portb=0x80;
039E: MOVLW 80
039F: MOVWF 06
.................... lenh();
03A0: CALL 182
.................... portb=0x0c;
03A1: MOVLW 0C
03A2: MOVWF 06
.................... lenh();
03A3: CALL 182
.................... for(i=0;i<9;i++)
03A4: CLRF 29
03A5: MOVF 29,W
03A6: SUBLW 08
03A7: BTFSS 03.0
03A8: GOTO 3B0
.................... {
.................... portb=ht1[i];
03A9: MOVF 29,W
03AA: CALL 013
03AB: MOVWF 78
03AC: MOVWF 06
.................... xuat();
03AD: CALL 18A
.................... }
03AE: INCF 29,F
03AF: GOTO 3A5
.................... portb=0x89;
03B0: MOVLW 89
03B1: MOVWF 06
.................... lenh();
03B2: CALL 182
.................... if(chuc==0)
03B3: MOVF 27,F
03B4: BTFSS 03.2
03B5: GOTO 3B8
.................... {chuc=10;}
03B6: MOVLW 0A
03B7: MOVWF 27
.................... chuc;
.................... portb=ht[chuc];
03B8: MOVF 27,W
03B9: CALL 004
03BA: MOVWF 78
03BB: MOVWF 06
.................... xuat();
03BC: CALL 18A
.................... portb=ht[dv];
03BD: MOVF 28,W
03BE: CALL 004
03BF: MOVWF 78
03C0: MOVWF 06
.................... xuat();
03C1: CALL 18A
.................... portb=0b00101110;
03C2: MOVLW 2E
03C3: MOVWF 06
.................... xuat();
03C4: CALL 18A
.................... portb=ht[le1];
03C5: MOVF 2B,W
03C6: CALL 004
03C7: MOVWF 78
03C8: MOVWF 06
.................... xuat();
03C9: CALL 18A
.................... portb=ht[le2];
03CA: MOVF 2C,W
03CB: CALL 004
03CC: MOVWF 78
03CD: MOVWF 06
.................... xuat();
03CE: CALL 18A
.................... portb=0b11011111;
03CF: MOVLW DF
03D0: MOVWF 06
.................... xuat();
03D1: CALL 18A
.................... portb=0b01000011;
03D2: MOVLW 43
03D3: MOVWF 06
.................... xuat();
03D4: CALL 18A
.................... portb=0xc0;
03D5: MOVLW C0
03D6: MOVWF 06
.................... lenh();
03D7: CALL 182
.................... for(i=0;i<14;i++)
03D8: CLRF 29
03D9: MOVF 29,W
03DA: SUBLW 0D
03DB: BTFSS 03.0
03DC: GOTO 3E4
.................... {
.................... portb=ht3[i];
03DD: MOVF 29,W
03DE: CALL 021
03DF: MOVWF 78
03E0: MOVWF 06
.................... xuat();
03E1: CALL 18A
.................... }
03E2: INCF 29,F
03E3: GOTO 3D9
.................... portb=0xc0;
03E4: MOVLW C0
03E5: MOVWF 06
.................... lenh();
03E6: CALL 182