Points to the current top of the stack memory area, managing subroutines through PUSH and POP operations. The Flag Register (Status Register)
An instruction lifecycle consists of three nested time units: , Machine Cycles , and Instruction Cycles .
: Differentiates between Input/Output operations (High) and Memory operations (Low). microprocessor 8085 ppt by gaonkar new
Six 8-bit registers— B, C, D, E, H, and L . They can be used individually or paired together ( BC, DE, HL ) to function as 16-bit registers. The HL pair frequently acts as a memory pointer.
The 8085 has six general-purpose, 8-bit registers: . They can be used individually or combined as 16-bit register pairs ( BC, DE, and HL ) to perform 16-bit operations and hold memory pointers. The HL pair acts as a primary memory pointer for many instructions. The Accumulator (A) Points to the current top of the stack
Addressing Modes (Immediate, Register, Direct, Indirect, Implicit)
An 8-bit register containing 5 active 1-bit flip-flops that indicate the status of the ALU following an execution: Six 8-bit registers— B, C, D, E, H, and L
The 8085 microprocessor remains a foundational subject in computer engineering and electronics education. Ramesh S. Gaonkar’s textbook, " Microprocessor Architecture, Programming, and Applications with the 8085, " is the definitive text on the subject, frequently used to structure comprehensive PPT presentations for students and professionals. This article provides a detailed breakdown of the 8085 microprocessor, covering its architecture, programming, and key concepts, designed for a modern "new" presentation format based on Gaonkar's teachings. 1. Introduction to the 8085 Microprocessor
Alters the sequential flow of execution (e.g., JMP , JC , CALL , RET ).