Gaonkar New Hot! - Microprocessor 8085 Ppt By

Addressing modes describe how the microprocessor locates the data it needs to operate on:

" by Ramesh S. Gaonkar . These presentations typically distill the book's extensive hardware and software concepts into digestible slides for university-level courses. Core Topics in Gaonkar-Based Presentations

The Intel 8085 is an 8-bit, general-purpose microprocessor capable of addressing

Operates typically at 3 MHz (using a 6 MHz crystal oscillator) microprocessor 8085 ppt by gaonkar new

Example: MVI A, 32H (Move immediate value 32 Hex into the Accumulator).

An 8-bit register containing five active flags (Sign, Zero, Auxiliary Carry, Parity, Carry) that reflect the result of data operations. B. Arithmetic and Logical Unit (ALU) The ALU performs arithmetic ( -bit addition, subtraction) and logical operations ( ANDcap A cap N cap D ORcap O cap R XORcap X cap O cap R

A 16-bit register that points to the current top of the stack in memory, managing PUSH and POP operations during subroutines. The Status Flag Register Addressing modes describe how the microprocessor locates the

Non-maskable, highest priority vectored interrupt (edge and level triggered).

Set if the ALU operation result is exactly zero. Auxiliary Carry Flag (AC): Set if there is a carry from bit D3cap D sub 3 D4cap D sub 4 (used for BCD arithmetic).

Set to 1 if an arithmetic operation results in a carry out of the most significant bit (D7). Special-Purpose 16-bit Registers Core Topics in Gaonkar-Based Presentations The Intel 8085

Architecture and Programming of the Intel 8085 Microprocessor

8-bit (processes 8 bits of data simultaneously) Address Bus Width: 16-bit (can access memory locations) Clock Frequency: Standard version operates at (internal clock frequency) Technology: Built using High-Density MOS (HMOS) technology

Slide 9: Instruction Set Classification (Gaonkar's Taxonomy)

: Status signals that identify the type of machine cycle currently in progress (e.g., Fetch, Read, Write, Halt). VCCcap V sub cap C cap C end-sub VSScap V sub cap S cap S end-sub : power supply and ground reference respectively.