Instructions like ANA , ORA , XRA , and CMP allow bitwise manipulation and comparisons.
| Edition | Year | Key Features & Updates | Publisher(s) | | :--- | :--- | :--- | :--- | | | 1984 | The first-of-its-kind integrated treatment of hardware and software. Titled "Microprocessor architecture, programming, and applications with the 8085/8080A." | Merrill Publishing Company | | 4th Edition | 1999 | Replaced the Intel SDK-85 system with the EMAC Primer trainer for modern PCs. Added interfaces for LCD modules and the 8237 DMA controller. | Prentice Hall | | 5th Edition | 2002 | A major overhaul reflecting "the most recent technological changes." Expanded coverage of software development and cross-assemblers for PCs. Added a block diagram of the Microprocessor-Controlled Temperature System ( MCTS ). | Prentice Hall / Penram International | | 2014 Reprint / 6th Ed. | 2010/2014 | A reprint of the 5th edition by Penram International with minor corrections. The 2014 catalog entry lists it as a "5th ed. reprint" (820 pages) . Penram also published a true 6th Edition in 2010 (ISBN 9788187972884). | Penram International Publishing Pvt. Ltd. / Prentice Hall |
A step-by-step breakdown of (Opcode Fetch vs. Memory Read).
No book is perfect, and Gaonkar’s 2014 edition has a few noted drawbacks:
: TRAP (non-maskable), RST 7.5, RST 6.5, RST 5.5, and INTR. Software Interrupts : RST 0 through RST 7.
Understanding how the Accumulator, General Purpose Registers (B, C, D, E, H, L), and Flag Registers interact.
The middle section of the book focuses on programming. While modern coding relies on compilers and abstraction, the 8085 requires Assembly Language.
Focuses on advanced interfacing with programmable devices like the (Timer), and (Interrupt Controller).
: Covers loops, counters, time delays, stacks, and subroutines.
Are you studying for an (e.g., timing diagrams, bus cycles)?
: Lecture handouts summarizing the 8085 architecture based on Gaonkar. Academia.edu - 8085 Programming Examples
To the uninitiated, dedicating a massive textbook to an 8-bit microprocessor introduced in the late 1970s might seem antiquated. However, Gaonkar handles this critique with pedagogical foresight.
Master the Fundamentals: A Deep Dive into Ramesh Gaonkar’s 8085 Microprocessor Guide