If the first byte of data that enters the processor is an instruction, the processor will respond by performing the proper operation. Data is input to the CPU on the data pins marked D0 - D7. The microprocessor is a digital circuit that only responses to a series of one's and zero's. The microprocessor has an instruction setĪssembly language programming has a set of mnemonic instructions and pseudo-operations. It is important for you to understand that: To avoid a lot of confusion when you work with the debug program, the 8088 CPU instruction set and assembly programming, refer to the following list showing the commands and instructions of each one. Chapter 2 Debug Tutorial by Fran Golden Debug - The 8088 assembler
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