Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
External Hardware-Interrupts
External hardware-interrupts are generated by controllers of external devices or coprocessors and are connected to the processor pin for Non Mask able Interrupts (NMI) or to the pin for Mask able Interrupts (INTR). The NMI line is generally booked for interrupts that occur because of fatal errors like a power distortion or parity error.
Interrupts from external devices may also be associated to the processor via the Intel 8259A Programmable Interrupt Controller (PIC). The CPU utilizes a group of I/O ports to control the PIC and the PIC puts its signals on the INTR pin. The PIC makes possible to enable or disable interrupts and to change the priority levels under supervision of a program.
The instructions CLI and STI may be utilized to enable/disable interrupts on the INTR pin, it has not any effect on NMI interrupts.
8255 Programmable Peripheral Interface Intel's 8255 A programmable peripheral interface provides a nice instance of a parallel interface. As shown the interface have a control
8279 Keyword /Display Controller : Figure shows the structure of 8279 and its interface to the bus. Addressing is according to the table given below. CS RD
Write a program to mask bits D3D2D1D0 and to set bits D5D4 and to invert bits D7D6 of ax register
8088 Timing System Diagram The 8088 address/data bus is divided in 3 parts (a) the lower 8 address/data bits, (b) the middle 8 address bits, and (c) the upper 4 status/
Sum of series of 10 numbers and store result in memory location total
1) Write an 80x86 assembly language program in EXE file format to do the following tasks: a) Open and read the contents of a file into memory (use at least 1 kB). b) Sort the li
Interrupt System Based on Multiple 8259As A multiple 8259A interrupt system is diagrammed in given figure in this figure data bus drivers are not indicated, but they could be i
CAN U GIVE BRIEF THEORY
Interrupt System Based on Single 8259 A The 8259A is contained in a 28-pin dual-in-line package that need only a + 5-V supply voltage. Its organization is shown in given figur
Logical Instruction : This type of instructions is utilized for carrying out the bit by bit shift, basic logical operations or rotate. All of the condition code flags are affe
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd