R. Gaonkar Microprocessor Architecture Programming And Applications With The 8085 Prentice Hall 2014 -

5. Interfacing & Peripheral Chips (Key from later chapters)

| IC | Purpose | Gaonkar Examples | |----|---------|------------------| | 8155 | 256 bytes RAM + 3 I/O ports + timer | Use for simple keypad scan | | 8255 (PPI) | 24 programmable I/O lines | Mode 0: Traffic light; Mode 1: Handshake I/O | | 8279 | Keyboard/display interface | Matrix keyboard + 7-segment display | | 8253/8254 | Programmable interval timer | Frequency divider; square wave generation | | 8259 | Priority interrupt controller | Cascade with 8085 INTR | | ADC0804 (not from Intel) | Analog to digital | Interface with 8085 via port | Gaonkar, R

• Gaonkar, R. (2014). Microprocessor Architecture, Programming, and Applications with the 8085. Prentice Hall.
• Intel Corporation. (1977). 8085/8085A/8085AH 8-Bit Microprocessor.
• Kenneth Morse. (2007). The 8085 Primer: An Introduction to the 8085 Microprocessor.

1. The "Inside-Out" Approach

Many modern textbooks start with high-level concepts and work their way down. Gaonkar flips this script. He understands that to master hardware, you must understand the architecture first. you must understand the architecture first.