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I am trying to understand the keil startup assembly code because it initializes the minimal hardware to work with C language. I am stuck at this line:
IF PLL_SETUP <> 0
What is the meaning of the above line? Specifically, the <> symbol? Please somebody help me figure out this assembly instruction.
This line is not assembly per se but a control directive. <> means “not equal”. So, if the preprocessor symbol PLL_SETUP is not 0, the following block (until ELSE or ENDIF) is passed to the assembler, otherwise it’s skipped.