Target Audience: Electronics, Electrical, and Computer Science Engineering students. Slide 2: Core Definitions & Distinctions
| Week(s) | Topic | Key Concepts Covered | | :--- | :--- | :--- | | 1 | Introduction to Microprocessors | Definition, evolution from discrete components to microchips, basic block diagram of a microcomputer (CPU, Memory, I/O), and differences between a microprocessor, microcomputer, and microcontroller. | | 2 | 8085 Microprocessor Architecture | Internal architecture of the 8085, including the Arithmetic Logic Unit (ALU), register array (Accumulator, general-purpose registers), flag register, program counter, and stack pointer. | | 3 | Addressing Modes & Instruction Set | The five addressing modes of the 8085 (Immediate, Register, Direct, Register Indirect, Implied) and an introduction to the 74 instructions in its set. | | 4 | Interrupts of 8085 | The five hardware interrupts (TRAP, RST 7.5, RST 6.5, RST 5.5, INTR) and eight software interrupts (RST 0 - RST 7), including their priority and masking. | | 5-6 | Assembly Language Programming | Writing programs for data transfer, arithmetic/logical operations, using loops, counters, and time delays, as well as implementing stacks and subroutines. | | 7-9 | Programming Exercises & Lab Work | Practical application through coding exercises, focusing on flowcharts, program debugging, and result analysis to solidify programming concepts. | | 10-13 | Interfacing I/O Devices & Peripherals | Connecting the 8085 to external devices, including memory interfacing, and using programmable peripheral interface devices like the 8255 PPI, 8254 Timer, and 8279 Keyboard/Display controller. | | 14-15 | Advanced Topics & Review | A review of all concepts and an introduction to advanced microprocessors and microcontrollers, bridging the knowledge to modern systems. |
power supply, a major upgrade over the multi-voltage requirements of its predecessor, the 8080. Key Specifications
Gaonkar categorizes the 8085 instructions into five structural groups: Data Transfer, Arithmetic, Logical, Branching, and Machine Control. Slide 9: Interrupts Structure Slide Title: Interrupt Management in the 8085 Core Concepts: microprocessor 8085 ppt by gaonkar
Structured around the Pedagogy of Ramesh S. Gaonkar Core Concepts:
Some of the key features of the 8085 microprocessor are:
Points to the memory address of the next instruction to be fetched and executed. It increments automatically. | | 3 | Addressing Modes & Instruction
If you’ve ever studied electronics or computer science, you know that book is the ultimate bible for understanding the 8085 architecture.
Use separate colors for the address bus (unidirectional), data bus (bidirectional), and control lines to make demultiplexing clear.
ADD C (Add contents of register C to the Accumulator; flags are updated) SUB M (Subtract the contents of memory location from the Accumulator) INR D (Increment contents of register D by 1) 3. Logical Group | | 7-9 | Programming Exercises & Lab
RD and WR: Active low signals for reading and writing operations.
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Controls the status of the processor or manages specific operational states. NOP (No Operation; wastes 4 T-states for timing delays) HLT (Halt CPU operations until an interrupt occurs) 6. Interrupt Structure
: The Program Counter places the 16-bit target address onto the address lines. , latching the lower byte. drops low if reading from memory. T2cap T sub 2 : RD̄modified cap R cap D with bar above