![]() If you want to set breakpoints in your execution while writing the code write INT3 after a set of instruction whose output you want to verify- you need not write any isr for INT3.Before you begin your design go the library menu – Pick Symbol and devices and enable the option – Show only parts with models.The LED used is high current one - to make it equivalent to a valve so a relay is used - you do not need a relay to just connect a normal LED to 8255 Pl Note: The Latch used in the design after 8255 Port A to connect to valves is not required as outputs of 8255 are already in latched format I would advice use of proteus 7.1.You can contact the individual campus instructors - regarding download of Proteus - or alternatively mail me at Tutorial Videos for Proteus Video 1 - Introduction to Proteus It simulates Input / Output ports, interrupts, timers, USARTs and all other peripherals present on each supported processor.You will be using the ISIS Schematic Capture Tool of Proteus Proteus also has the ability to simulate the interaction between software running on a microcontroller and any analog or digital electronics connected to it. The suite combines mixed mode SPICE circuit simulation, animated components and microprocessor models to facilitate co-simulation of complete microcontroller based designs. Proteus is a Virtual System Modelling and circuit simulation application. ![]()
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