Emu8086 stepper motor code#
Then using a few logical steps as mentioned in the code i.e JMP insctructions we find the square root of a 8-bit number. We load the value of the number into SI Register. In this program we initially load the index registers with specified values. Related links Ebooks for micro processors and micro controllers 0 comments Labels: 8086, 8255, Assembly Language, generate square waveform, square wave Assembly language program to find square root of 8-bit number Following is the assembly language program to find square root of 8-bit number. Thus we programed in assembly language to interface DAC using 8255 to generate a square waveform. Code: MOV DX,8807 : DX is loaded with control word register address of 8255 MOV AL,80 OUT DX,AL : Contents of AL are transferred to portA of 8255 MOV DX,8801 : DX is loaded with Port A address of 8255 Begin MOV AL,00 OUT DX,AL Contents of AL are transferred to portA of 8255 MOV CX,00FF Delay1 Loop Delay1 MOV AL,FF OUT DX,AL : Contents of AL are transferred to portA of 8255 MOV CX,00FF : CX is loaded with 00FFH Delay2 Loop Delay2 : Repeat until CX=0 JMP Begin Repeat the same The expected square wave can be observed as in the figure shown. The two loops used in the program are iterated to repeat cycles of a square wave. Certain value chosen is delayed or sustained for a time period to form the square wave. Here in the code, we use two delay elements one for the rising part of the wave and the other delay element to reach zero i.e decrement. Following is the Assembly language program for a real time clock Code: LCALL 061D AGAIN MOV DPTR, #2845 REPEAT DEC82 Decrement DPL MOVX MOV R3,A MOV R5,#02 LCALL 059E MOV A,20 LCALL 2006 MOVA,82 CJNE A,#42 REPEAT (ED) MOVA,#OD OD = ASCII FOR ENTER LCALL 2006 LJMP AGAIN ( 6003 ) To change the RTC 2844-hrs 2843-minutes 2842-seconds 0 comments Labels: 8086, Assembly Language, c program, real time clock Program to interface DAC using 8255 and generate square waveform Program to interface DAC using 8255 and generate square waveform The following is the assembly language using DAC to interface with 8255 and generate a square wave on CRO.
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