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Category Archives: Computer Organization & Architecture

Intel 8259 is a Programmable Interrupt Controller (PIC). There are 5 hardware interrupts and 2 hardware interrupts in Intel 8085 and Intel 8086 microprocessors respectively.… Read More
Problem – Interface 8255 with 8085 microprocessor and write an assembly language program to display 99 in Port A, 1’s complement of 99 in Port… Read More
Problem – Write a program in 8086 microprocessor to determine modulus of corresponding 8 bit n elements of first array with 8-bit n numbers of… Read More
Reduced Instruction Set Architecture (RISC) – The main idea behind this is to make hardware simpler by using an instruction set composed of a few basic… Read More
PPI 8255 is a general purpose programmable I/O device designed to interface the CPU with its outside world such as ADC, DAC, keyboard etc. We… Read More
Problem – Write a program in 8086 microprocessor to find out the subtraction of corresponding elements of two arrays of 8-bit n numbers, where size… Read More
Write a program to count continuously in hexadecimal from FFH to 00H in a system with clock frequency 0.5 microseconds. Use register C to set… Read More
Problem – Calculate the sum of series of even numbers from the given list of numbers. The length of the list is in memory location… Read More
Caches are the faster memories that are built to deal with the Processor-Memory gap in data read operation, i.e. the time difference in a data… Read More
Problem – Write a program in 8086 microprocessor to find out the sum of two arrays of 8-bit n numbers, where size “n” is stored… Read More
Problem – Write a program in 8086 microprocessor to find out the product of two arrays of 8-bit n numbers, where size “n” is stored… Read More
Problem – Write an assembly language program in 8086 to print the table of input integer.  Assumption – Suppose the inputted number is at memory… Read More
Problem – Write an assembly language program in 8085 to print the table of input integer. Assumption – Suppose the inputted number is at memory… Read More
It’s unique and quite intriguing to discover that quantum mechanics can manifest itself in a form that could enhance the capabilities of traditional computer systems,… Read More
Problem – Write an assembly language program in 8086 microprocessor to find sum of digit of an 8 bit number using 8 bit operation. Example… Read More

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