The 8085 has five status flags that reflect the result of an ALU operation: Sign (S): Set if the result is negative. Zero (Z): Set if the result is zero. Auxiliary Carry (AC): Used for BCD arithmetic. Parity (P): Set if the result has an even number of 1s. Carry (CY): Set if an operation results in a carry-out. Pin Configuration and Signals
The architecture is divided into several functional units that work in sync to execute instructions. The Arithmetic Logic Unit (ALU) microprocessor 8085 ppt by gaonkar
Example: ADD B (Add B to Accumulator), ANA C (Logical AND C with Accumulator). Branching Instructions These alter the flow of the program. Example: JMP 2000H (Jump to address 2000H), CALL , and RET . Interfacing and Applications The 8085 has five status flags that reflect
These move data between registers or between memory and registers. Example: MOV A, B (Move content of B to A). Arithmetic and Logical Instructions Used for calculations and bitwise manipulation. Parity (P): Set if the result has an even number of 1s
ALE (Address Latch Enable): Used to demultiplex the AD0–AD7 bus.
Accumulator (A): An 8-bit register that is part of every ALU operation.
RD and WR: Active low signals for reading and writing operations.