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!
Talking to IO boards inside a computer or microcontroller depends upon the principles used by the microprocessor to address physical devices. On Motorola systems all devices connected to the processor local bus are memory mapped. Therefore it is fairly easier to address by means of a pointer the IO device, since it is just like RAM. In the case of Intel devices, the IO is not memory mapped, it is IO mapped. This causes a minor problem is accessing such devices, since the processor has to use IN, OUT commands and the address, therefore a simple pointer will not do. A non-ANSI function exists on PC's called 'portoutb' and 'portinb' these are used to input and output a byte of data (char) to an IO address (int). The syntax depends upon the compiler used by usually consists of outportb(address,data); data = inportb(address); Care should be taken when porting code from an Intel platform to a Motorola platform since these functions are not standard ANSI and will need to converted for the Motorola Platform. Below is shown an example for a 8255 IO board configured at a base address 0x2b4 #include stdio.h #include dos.h void main() { Date: 26th August 1992 Version 1.0 Function : Reads port A and display it on the screen and portb,c Modifications: Non Standard non portable code PC only */ int CardAddress = 0x2b0, BaseAddress, Port_a; int Port_b, Port_c, ControlRegister; unsigned char ControlWord = 0x90, InputValue; BaseAddress = CardAddress + 4; Port_a = BaseAddress; Port_b = BaseAddress + 1; Port_c = BaseAddress + 2; ControlRegister = BaseAddress + 3; ControlWord = 0x90; outportb(ControlRegister, ControlWord); while (1) { InputValue = inportb(Port_a); outportb(Port_b, InputValue); outportb(Port_c, InputValue); printf("Read from A = %x\n", InputValue); } } Despite these additions NON-ANSI functions they are only DOS commands and hence using Windows NT you will need to write a windows driver, for this you will need C++ and a few books on Windows.
A Padovan string P(n) for a natural number n is defined as: P(0) = ‘X’ P(1) = ‘Y’ P(2) = ‘Z’ P(n) = P(n-2) + P(n-3), n>2 where + denotes string concatenation. For a string of the c
give the coding in c++
Project Description: Not just like that though. I want a similar program that can scan through poker lobbys (pokerstars, full tilt, ongame and ipoker) and seat me to the left of
algorithm
Write a program to convert English units to metric (e.g., miles to kilometers, gallons to liters, etc.). Include a specification and a code design.
Pure Virtual Functions An abstract class is one, which is used just for deriving some other classes. No object of this class is declared and used in the program. Likewise, ther
(a) client server or multithreaded client-server, where server will create pool of worker threads (say 5) to provide services to pool of clients (say 5 ).Server should be behaving
#give me the code
Of course it is C[i] = A[i] + B[i].It was a typing mistake,never mind. You just understand the concept. 27-1 b. for grain-size=1 n=A.length grain-size=1 r=n for
Introduction to Classes Object-oriented programming (OOP) is a conceptual approach to design programs. It can be executed in many languages, whether they directly support OOP c
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