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!
Illustrate about 8259
8259A adds 8 vectored priority encoded interrupts to the microprocessor. We can expand it to 64 interrupt requests by using one master 8259A and 8 slave units. CS and WR should be decoded. Other connections are direct to microprocessor.
Pins D7 - D0: the bidirectional data connection, IR7 - IR0: Interrupt request, used to request an interrupt and connect to a slave in a system with multiple 8259A.
WR:-Connects to a write strobe signal (upper or lower in a 16 bit system), RD: - Connects to IORC signal, INT: - Connects to INTR pin on the microprocessor from the master and is connected to an IR pin on a slave and INTA: - Connects to INTA pin on the microprocessor. In a system only master INTA signal is connected A0:- Selects different command words with in the 8259A, CS: - Chip select - enables 8259A for programming and control, SP/EN: - Slave Program (1 for master, 0 for slave)/Enable Buffer (controls data bus transceivers in a large microprocessor based system when in buffered mode) and CAS2-CAS0:- Used as outputs from the master to slaves in cascaded systems.
Figure: 8259 Block Diagram
Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b
What is a macro ? How it is defined ? Preprocessor' is a translation phase that is applied to source code before the compiler proper gets its hands on it. Generally, th
Describe briefly how firewalls prevent network. A firewall is only a program or hardware device which filters the information coming via the Internet connection within your pr
Example of ANN - artificial intelligence: ANNs look like this: Notice that the x, w, z and y represent actual valued weights and that every the edges in this graph
What is a disk drive? The electro mechanical mechanism that spins the disk and moves the read/write heads known as disk drive.
Can we use flow logic control key words in ABAP/4 and vice-versa The flow control of a dynpro having os a few statements that syntactically ressemble ABAP/4 statements .Thou
Q. Routines which handle dynamic processes? number of routines which handle dynamic processes: int pvm_joingroup( char *group ) Enrolls calling process in a na
Identify the type of cohesion in the following statements: 1. Compute average daily temperatures at various sites 2. Initialize sums and open files 3. Create new temperature rec
This part looks at Berliner's program, two backprop versions by Tesauro and a temporal difference process by Tesauro. This latter program is VERY good quality and has found strateg
A group report with no more than three students per group is to be handed in to explain your design procedures and simulation results. Representative graphical system outputs (clea
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