Introduction to 8259 (8259 Microprocessor) 8259 microprocessor is defined as a Programmable Interrupt Controller (PIC) microprocessor. There are 5 hardware interrupts and 2 hardware interrupts […]
Interrupt Handling with 8085 Interrupt handling is a key function in real-time software and comprises interrupts and their handlers. Only those physical interrupts which of […]
Interrupt Service Routine Interrupt service routine (ISR) is actually a call back function (program) in case of software or device driver (I/O device) in case […]
Interrupt Processing Sequence The occurrence of an interrupt fires a number of events both in processor hardware and software. The figure below displays a sequence. […]
Polling and Interrupt Polling is a method of checking whether an external device (external to the CPU) requires attention/servicing. In order to incorporate polling, the […]
Timing Diagram A timing diagram in the Unified Modeling Language 2.0 is a specific type of interaction diagram, where the focus is on timing constraints. […]
Microprocessor 8085 programming (Memory Location) 1. Write a program for 8085 to find the smallest number among ten numbers stored at memory location 4500H. [2060 […]
Microprocessor 8085 programming (Memory Location) 1. An 8-bit binary number is stored in memory location 1120H. WAP to store ASCII codes of these binary digits […]
Microprocessor 8085 programming (Memory Location) 1. Six bytes are stored in memory location starting at 2050H. Add all the data bytes, save any carry generated while adding […]
Microprocessor 8085 programming (Memory Location) 1. Sixteen bytes of data are stored in a memory location at 1050H to 105FH. Replace each data byte by […]
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