Universal Assembler delay subroutine microcontroller 51,

51 Single Chip Microcomputer Universal Compilation Delayer Subprogram, Keywords: 51 single-chip universal assembly delay subroutine 51 single-chip universal assembly delay subroutine [DELY]: Universal Time Subprint [Address]: 7FEBH - FFEBH [Function]: Delay [Portal]: Delay constant is placed in the R2 register. The delay time (6MZH crystal) corresponding to the time constant n (sixteen) is shown in the following table: [Exit]: R2 = 0 [Treasser Register]: R2 [Call]: Sample: Delay 1 second subroutine MOV R2, # 18h lcall 7febh ret org 7FEBH; Universal Time subroutine (07EBH & 0Febh & ...) L7FEB: PUSH 02H; R2 (R2 is 02H after reset) Storage time constant, PUSH 02H R2 Pack Protection L7FEF: PUSH 02H; Punch L7FF1: DJNZ R2, $; R2 is not waiting for POP 02H; out of the stack DJNZ R2, L7FEF; R2 is not zero-turn POP 02H; out of the stack DJNZ R2, L7FED; R2 Not zero-turn POP 02H; out of the stack DJNZ R2, L7FEB; R2 is not zero RET; subroutine returns end n (hexadecimal number) T (machine Zhou Scute) T (second) subroutine address 1 11 0.000044 C 2728 0.010912 18 26323 0.105292 2800 1D 50838 0.203352 2808 21 80323 0.321292 2810 24 109666 0.438664 2818 26 133248 0.532992 2820 28 160431 0.641724 2828 29 175481 0.701024 2830 2E 267146 1.068584 2838 37 516836 2.067344 2840 3D 760366 3.041464 2848 42 1021681 4.086724 2850 46 1275016 5.100064 2858 54 2543878 10.175512 2860 65 5144436 20.577744 2868 70 7654053 30.616212 2870 78 9986491 39.945964 2878 7F 12432158 49.728632 2880 98 24956083 99.824332 2888 A9 37708623 150.83453 B6 50353668 201.41467 2890 CA 75697683 302.79073 2898 D9 100218410 400.87365 28A0 E6 1259099 40 503.63974 28A8 F1 151248830 605.03532 28B0 FF 188839490 755.35794 0 191768000 767.072 28b8, Read more

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