The document discusses interrupts in computing systems. It defines an interrupt as either a hardware-generated call from an external signal or a software-generated call from an instruction. The main purposes of interrupts are to halt normal program execution and divert processing to an interrupt service routine in response to external events. It then provides details on different types of interrupts, including hardware interrupts from devices and software interrupts from instructions. It lists and describes the most common interrupt types and their associated vector numbers.
This presentation discusses the support for interrupts in 8051. The interrupt types, interrupts versus polling etc are discussed. The register formats of IE, IP register are discussed. The concept of priority among the interrupts is discussed.
This presentation discusses the support for interrupts in 8051. The interrupt types, interrupts versus polling etc are discussed. The register formats of IE, IP register are discussed. The concept of priority among the interrupts is discussed.
PIC A special purpose integrated circuit that function as an overall manager in an interrupt driven system.
It accepts request from the peripheral equipment,determines which of the incoming request is of the highest priority, ascertains whether the incoming request has a higher priority value than the level currently being serviced, and issues an interrupt to the CPU based on this determination.
Introduction of memory Segmentation
Segmentation is the process in which the main memory of the computer is logically divided into different segments and each segment has its own base address.
Memory segmentation is the methods where whole memory is divided into the smaller parts called segments of various sizes.
A segment is just an area in memory.
The process of dividing memory this way is called segmentation.
this ppt only for beginner who want to understand concept of Timer counter operation of LPC2148 step by step.
hope it may help u.
always welcoming ur suggestion.
PIC A special purpose integrated circuit that function as an overall manager in an interrupt driven system.
It accepts request from the peripheral equipment,determines which of the incoming request is of the highest priority, ascertains whether the incoming request has a higher priority value than the level currently being serviced, and issues an interrupt to the CPU based on this determination.
Introduction of memory Segmentation
Segmentation is the process in which the main memory of the computer is logically divided into different segments and each segment has its own base address.
Memory segmentation is the methods where whole memory is divided into the smaller parts called segments of various sizes.
A segment is just an area in memory.
The process of dividing memory this way is called segmentation.
this ppt only for beginner who want to understand concept of Timer counter operation of LPC2148 step by step.
hope it may help u.
always welcoming ur suggestion.
Interrupts is a signal from a device attached to a computer or from a program within the computer which causes the main program that operates the computer to stop and figure out what to do next.
In this chapter, the coverage of basic I/O and programmable peripheral interfaces is expanded by examining a technique called interrupt-processed I/O.
An interrupt is a hardware-initiated procedure that interrupts whatever program is currently executing.
This chapter provides examples and a detailed explanation of the interrupt structure of the entire Intel family of microprocessors.
This method of checking the signal in the system for processing is called Polling Method. In this method, the problem is that the processor has to waste number of clock cycles just for checking the signal in the system, by this processor will become busy unnecessarily. If any signal came for the process, processor will take some time to process the signal due to the polling process in action. So system performance also will be degraded and response time of the system will also decrease.
Customizable Microprocessor design on Nexys 3 Spartan FPGA BoardBharat Biyani
- Designed a 4 stage pipelined, 16-bit customizable microprocessor in VHDL which can execute instructions (direct & memory mapped addressing modes), handle interrupts (IVT based), communicate with IO devices including keyboard and VGA monitor and facilitates with a single port BLOCK RAM for Stack, Instruction , Data & IVT memory. Keyboard and VGA controller provides input-output interface gives user flexibility of keying in the instructions through Keyboard that is interfaced with Nexys 3 through USB 2.0; VGA interface to display the output. Keyboard and VGA controllers are also coded in VHDL.
- Implemented the VHDL code on Nexys 3 Spartan FPGA board which involved simulation, synthesis and bit file generation using Xilinx ISE,programming the FPGA with Digilent Adept.
- Employed the debug mode to make the design more user friendly
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
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Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
3. • An Interrupt is either a Hardware
generated CALL (externally
derived from a hardware signal)
OR
• A Software-generated CALL
(internally derived from the
execution of an instruction or by
some other internal event
4. An interrupt is used to cause a temporary
halt in the execution of program.
The meaning of ‘interrupts’ is to break the
sequence of operation.
While the Microprocessor is executing a
program, an ‘interrupt’ breaks the normal
sequence of execution of
instructions, diverts its execution to some
other program called Interrupt Service
Routine (ISR).
• After executing ISR, IRET returns the control
back again to the main program. Interrupt
processing is an alternative to polling.
5. The keyboard controller can hold only a
single keystroke. Therefore, the keyboard
controller must be freed before the next
keystroke arrives.
The keystroke is passed to the CPU
by putting it in the keyboard buffer. So, the
keyboard controller keeps on passing the
keystroke input to the CPU,
but how does the CPU attend to it? The
CPU is not at the disposal of the keyboard
controller; it is usually busy doing several
other operations. So, we need some
mechanism to indicate to the CPU that a
keystroke has arrived. How is this done?
There are two approaches to making sure
that the CPU pays attention:
6. The CPU executes other program, as soon as a
key is pressed, the Keyboard generates an
interrupt. The CPU will response to the
interrupt – read the data. After that returns to
the original program. So by proper use of
interrupt, the CPU can serve many devices at
the “same time”
8. Interrupts are useful when interfacing I/O
devices at relatively low data transfer
rates, such as keyboard inputs.
Interrupt processing allows the processor to
execute other software while the keyboard
operator is thinking about what to type next.
When a key is pressed, the keyboard encoder
debounces the switch and puts out one pulse
that interrupts the microprocessor.
9. – a time line shows typing on a keyboard,
a printer removing data from
memory, and a program executing
– the keyboard interrupt service
procedure, called by the keyboard
interrupt, and the printer interrupt service
procedure each take little time to execute
10.
11.
12. TYPES OF INTERRUPT
SOFTWARE INTERRUPTS: There are instructions in 8086 which
cause an interrupt.
• INT instructions with type number specified.
• INT 3, Break Point Interrupt instruction.
• INTO, Interrupt on overflow instruction.
HARDWARE INTERRUPTS:
The primary sources of interrupts, however, are the PCs timer
chip, keyboard, serial ports, parallel ports, disk drives, CMOS real-
time clock, mouse, sound cards, and other peripheral devices.
13.
14. The interrupt vector table contains 256 four
byte entries,containg the CS:IP
Interrupt vectors for each of the 256 possible
interrupts. The table is used to locate the
interrupt service routine addresses for each
of those interrupts.
The Interrupt vector table is located in the
first 1024 bytes of memory at addresses
000000H-0003FFH.It contains the
address(segment and offset)of the interrupt
service provider
15.
16. The interrupt vector table for the microprocessor and (b) the contents
of an interrupt vector.
– the first five interrupt vectors are identical
in all Intel processors
– Intel reserves the first 32 interrupt vectors
– the last 224 vectors are user-available
– each is four bytes long in real mode and
contains the starting address of the
interrupt service procedure.
– the first two bytes contain the offset
address
– the last two contain the segment address
17.
18. TYPE 0
The divide error : whenever the results
from a division overflows or an attempt is
made to divide by zero.
19.
20.
21. Type 2
The non-maskable
interrupt occurs
when a logic 1 is
placed on the NMI
input pin to the
microprocessor. non-
maskable—it cannot
be disabled
22.
23. Type 3
A special one-byte instruction (INT 3)
that uses this vector to access its
interrupt-service procedure. often
used to store a breakpoint in a
program for debugging
24.
25. TYPE 4
Overflow is a special vector used with the INTO
instruction. The INTO instruction interrupts the
program if an overflow condition exists.
26. TYPE 5
The BOUND instruction compares a register
with boundaries stored in the memory. If the
contents of the register are greater than or
equal to the first word in memory and less
than or equal to the second word, no interrupt
occurs because the contents of the register are
within bounds. if the contents of the register
are out of bounds, a type 5 interrupt ensues as
reflected by the overflow flag (OF)
27.
28.
29. Type 7
The coprocessor not available
interrupt occurs when a
coprocessor is not found, as
dictated by the machine
status word (MSW or CR0)
coprocessor control bits. if an
ESC or WAIT instruction
executes and no coprocessor
is found, a type 7 exception
or interrupt occurs
30. Type 8
A double fault
interrupt is
activated when
two separate
interrupts
occur during
the same
instruction.
31. In computing, a double fault
is a serious type of error that
occurs when a central
processing unit (CPU) cannot
adequately handle a certain
type of system event that
requires the CPU’s immediate
attention. Double faults may
cause computer crashes and
error messages, automatic
restarting of the machine, and
the loss of any unsaved data.
They are often caused by
problems in the computer’s
hardware such as a bad
memory module or
overheating CPU.
32. Type 9
The coprocessor segment overrun
occurs if the ESC instruction
(coprocessor opcode) memory
operand extends beyond offset
address FFFFH in real mode.
33. Type 10
An invalid task state segment interrupt
occurs in the protected mode if the TSS
is invalid because the segment limit field
is not 002BH or higher. usually because the
TSS is not initialized
Type 11
The segment not present interrupt occurs
when the protected mode P bit (P = 0) in
a descriptor indicates that the segment is
not present or not valid.
34. • Type 12
A stack segment overrun
occurs if the stack segment is
not present (P = 0) in the
protected mode or if the limit of
the stack segment is
exceeded.
35. Type 13
The general protection fault occurs
for
most protection violations in
80286–Core2 in protected mode
system.
These errors occur in Windows as
general protection faults. A list of
these protection violations follows.
36. • Type 13
PROTECTION VIOLATIONS
o (a) Descriptor table limit exceeded
o (b) Privilege rules violated
o (c) Invalid descriptor segment type loaded
o (d) Write to code segment that is protected
o (e) Read from execute-only code segment
o (f) Write to read-only data segment
o (g) Segment limit exceeded
o (h) CPL = IOPL when executing
CTS, HLT, LGDT, LIDT, LLDT, LMSW, or LTR
o (i) CPL > IOPL when executing
CLI, IN, INS, LOCK, OUT, OUTS, and STI
(cont.)
37. Type 14
Page fault interrupts occur for any page
fault memory or code access in
80386, 80486, and Pentium–Core2
processors.
Type 16
Coprocessor error takes effect when a
coprocessor error (ERROR = 0) occurs
for ESCape or WAIT instructions for
80386, 80486, and Pentium–Core2 only.
38. Type 17
Alignment checks indicate word and
double word data are addressed at an
odd memory location (or incorrect
location, in the case of a double
word).
interrupt is active in 80486 and
Pentium–Core2
39. Type 18
A machine check activates a
system memory management
mode interrupt in Pentium–
Core2.