Set if the Most Significant Bit (D7) of the result is 1. Z (Zero Flag): Set if the ALU result is exactly zero.
LXI H, 2000H ; Load HL pair with 2000H MOV A, M ; Move first number from 2000H to Accumulator INX H ; Point to next memory address (2001H) ADD M ; Add second number to Accumulator INX H ; Point to next memory address (2002H) MOV M, A ; Store result in 2002H HLT ; Halt Use code with caution. Conclusion
Copying data from a source to a destination (e.g., MOV , MVI , LXI , LDA ).
Direct: 16-bit memory address is specified in the instruction (e.g., LDA 2050H ). microprocessor 8085 ppt by gaonkar
Eight instructions ( RST 0 through RST 7 ) that act as programmatic vector jumps. Slide 10: Interfacing and Peripheral Devices Slide Title: Peripheral Interfacing Concept Core Concepts:
– Visualizing for an Opcode Fetch.
Controls official state execution (e.g., NOP , HLT , EI , DI ). Addressing Modes: Set if the Most Significant Bit (D7) of the result is 1
Every instruction begins with an Opcode Fetch machine cycle, which typically spans 4 T-states ( T1cap T sub 1
Integration of system clock and bus control logic directly on the chip reduced the overall peripheral component count. 2. Hardware Architecture and Internal Blocks
How the 8085 communicates with the outside world via memory-mapped I/O or peripheral-mapped (I/O mapped) I/O. Conclusion Copying data from a source to a destination (e
, such as on 8085 programming examples or its interfacing with peripheral devices?
A positive-going pulse generated at the beginning of every machine cycle. It latches the address bits onto an external latch. Control Signal Generation: Combining
The 8085 communicates with memory and I/O using its 16-bit address bus and 8-bit data bus. Using memory mapping ( ), the 8085 can address 64 KB of memory (RAM/ROM).
Data is explicitly provided within the instruction (e.g., MVI B, 05H ).