The instruction specifies a register pair (usually HL) that contains the memory address of the target operand. Template: MOV A, M
Hardware interrupts (TRAP, RST 7.5, RST 6.5, RST 5.5, INTR) mapped by priority and masking capability.
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An 8-bit register containing 5 active status flags updated after ALU operations:
The CPU automatically branches to a pre-defined, fixed memory address upon receiving the signal.
Template: LDA 2500H (Load Accumulator directly with data from memory address 2500H). The instruction specifies a register pair (usually HL)
Using Ramesh Gaonkar’s structured logic makes explaining the 8085 much simpler. When building your free PPT, focus on clear diagrams for the pinout and architecture, as these visual aids are essential for understanding how the "brain" of the system functions.
For students, educators, and engineers looking for a , this guide serves as a detailed breakdown of what that presentation should contain, alongside key concepts and resources for learning.
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Gaonkar classifies the 8085 instruction set into five functional categories based on how data moves and transforms. Data Transfer Instructions
The external device must supply the interrupt address over the data bus (e.g., INTR ). Priority and Vector Table Interrupt Name Vector Address Vector Type TRAP 1 (Highest) Non-Maskable 0024H RST 7.5 003CH RST 6.5 0034H RST 5.5 002CH INTR 5 (Lowest) Supplied by user Non-Vectored 6. Real-World Applications and Legacy Interfacing
The 40 pins of the 8085 can be categorized into specific functional groupings based on their operational roles.