Transcription of Tutorial On Introduction to 8085 Architecture and Programming
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Tutorial On Introduction to 8085 Architecture and Programming
Tutorial On Introduction to 8085 Architecture and Programming Contents 1. Internal Architecture of 8085 microprocessor 2. 8085 system bus 3. 8085 pin description. 4. 8085 functional description. 5. Programming model of 8085 microprocessor 6. Addressing modes. 7. Instruction set classification. 8. Instruction format. 9. Sample programs. 1. Internal Architecture of 8085 Microprocessor Control Unit Generates signals within uP to carry out the instruction, which has been decoded. In reality causes certain connections between blocks of the uP to be opened or closed, so that data goes where it is required, and so that ALU operations occur. Arithmetic Logic Unit The ALU performs the actual numerical and logic operation such as add , subtract , AND , OR , etc.
Sample programs. 1. Internal Architecture of 8085 Microprocessor ... address,3 stated during Hold and Halt modes. AD0 - 7 (Input/Output 3state) Multiplexed Address/Data Bus; Lower 8 bits of the memory address (or I/0 address) appear on the bus during the first clock cycle of a machine state. It then becomes the
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