The heart of the presentation. An animated, color-coded block diagram of the 8085 appears, breaking down the Accumulator, the Temporary Register, the Instruction Register, the Stack Pointer (SP), and the Program Counter (PC). A good PPT will use sequential reveals: first the register array, then the ALU, then the timing and control unit. This mirrors Gaonkar’s methodical deconstruction.
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.
pins are freed up to transfer data, effectively separating the address and data streams. Module 4: 8085 Instruction Set and Addressing Modes
Set to 1 if the ALU operation results in exactly zero. microprocessor 8085 ppt by gaonkar
The 8085 includes eight software instructions ( RST 0 through RST 7 ) embedded directly into programs to jump to explicit diagnostic or execution routine addresses. 7. Slide Layout Recommendations for PPT Presentations
: Typically operates at a maximum frequency of 3 MHz. Pins : A 40-pin Dual In-line Package (DIP). 2. Architecture and Functional Blocks
Lowest priority, non-vectored interrupt. Requires an external device to provide the opcode vector via the data bus after an interrupt acknowledgment ( INTA¯modified INTA with bar above The heart of the presentation
Author: Adaptation of Gaonkar-style exposition Format: Peer-reviewed educational monograph / conference tutorial paper (40–60 pages) + accompanying slide deck and lab packet
The Intel 8085 is a conventional, general-purpose microprocessor capable of addressing 64 KB of memory. The "5" in 8085 indicates that it uses a single +5V power supply, which was a massive improvement over the 8080’s requirement for multiple power voltages (+5V, -5V, and +12V). Key Specifications:
Requires a single +5V DC supply (unlike the three voltages required by the 8080). This mirrors Gaonkar’s methodical deconstruction
Structured around the Pedagogy of Ramesh S. Gaonkar Core Concepts:
A lineage graphic showing evolution from the 8085 up to modern multicore computing architectures. Key Content:
Operates at a standard 3 MHz clock frequency (using a 6 MHz crystal oscillator connected to pins X1cap X sub 1 X2cap X sub 2 Technology: Built using High-density NMOS (HMOS) circuitry.
The 8085 interfaces with EPROM (for program storage) and RAM (for temporary data). Decoders like the 74LS138 are often used to map specific addresses to these chips. I/O Interfacing Peripheral-Mapped I/O: Uses IN and OUT instructions. Memory-Mapped I/O: Treats I/O devices as memory locations. Why Gaonkar's Approach?