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
Processing elements (PEs) : Every processing element consists of ALU, local memory and its registers for storage of distributed data. This PEs has been interconnected via an inte
State the term in detail $strobe $strobe. This task is very similar to $display task except for a slight difference. If many other statements are executed in same time unit as
Use a timer interrupt to design a easy digital clock. This clock will count only minutes and seconds, and start at 00:00 every time your program starts. The show on the screen sh
Explain the Fundamentals of C Programming? The C is a general purpose structured programming language. The C was developed and first implemented by the Dennis Ritchie at Bell L
Navigation to a subsequent screen can be specified statically/dynamically Yes, navigation to a subsequent screen can be specified statically.
Compute the number of Ethernet frames formed for a data of 64 KB IP packet. Following figure demonstrates the format of the Ethernet frame. Here maximum data into a frame is 15
What are the steps in multiplication algorithm? Check for zeros. Multiply mantissas Add the exponents. Normalize the product.
Knowledge Representation: To recap, now we have some characterizations of Artificial Intelligence, so when an Artificial Intelligence problem arises, you will enable to put i
What are Different types of Verilog Simulators? There are essentially two types of simulators available. - Event Driven - Cycle Based
Explain Tri-state logic inverter with the help of a circuit diagram. Give its Truth Table. Ans: Tri-state Logic Inverter: The functional diagram of Tri-state Logic Inve
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd