Microprocessor 8085 Ppt By Gaonkar -

This paper summarizes the core concepts of the Intel 8085 Microprocessor

Slide 7: Pin Diagram of 8085

• Power Supply: Vcc (+5V) and Vss (Ground).
• Address/Data Bus:
  1. Architecture (The Big Picture): Slides showing the internal block diagram of the 8085 (ALU, Timing & Control, Registers, Interrupts).
  2. Pin Diagram: Memorize this. Which pin is SID? Which is SOD? A good PPT highlights the multiplexed address/data bus (AD0-AD7).
  3. Instruction Set Classification: Datas transfer, Arithmetic, Logical, Branching, and Machine control. Gaonkar’s book groups them logically, and good slides follow that flow.
  4. Addressing Modes: Immediate, Register, Direct, Indirect, and Implied.
  5. Stack & Subroutines: How PUSH, POP, CALL, and RET work with the Stack Pointer (SP).
  6. Interfacing Examples: Memory mapping, I/O mapping, and interfacing the 8155 or 8255 (PPI).

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• Status Signals: IO/M, S1, S0 (Identifies the type of machine cycle).
• Interrupts: TRAP, RST 7.5, RST 6.5, RST 5.5, INTR.

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For over three decades, the name Gaonkar has been synonymous with the Intel 8085 microprocessor. Ramesh S. Gaonkar’s textbook, "Microprocessor Architecture, Programming, and Applications with the 8085," remains the bible for engineering students in Computer Science, Electronics, and Electrical Engineering.