PLC.ASM Example Addresses Machine Code in Hex :020000040000FA :020000000528D1 :08000800112800308C00831662 :1000100000308500F0308600831288308B0063004A.

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Presentation transcript:

PLC.ASM Example

Addresses Machine Code in Hex : FA : D1 : C : F B A : F D E00F039031D2220B5 : C05603A D E1A06 : D D :0C E088C000D B : FF plc.lst Listing file

From list file

W Register

TRISA Register Outputs TRISB Register Inputs

INTCON Register

W Register

PortB W Register

Bitwise AND W Register

Put a 1 in 4 th bit of OUTPUT

W Register Bitwise AND old_data xorlw Compare with by checking Z bit

Simulation Create a new project Add the file plc.asm

Input