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Write a program to input an address i.e. 20 Hex and read the byte (char) contents of that address
Answer include void main() { char prompt; Date: 26th August 2012
Version 1.0 Function : To read an address in memory Modifications: none*/ unsigned long int address; unsigned char *add; unsigned char data; printf("Please enter in the address you want to read\n\r"); scanf("%lx",&address); add = (unsigned char *)address; data = *add; printf("The data at the address %08lx is %02x\n\r",address,data); printf("Press and key to exit \n\r"); scanf("\n%c",&prompt); } Note: Care should be taken since some operating systems do not allow the user to read any memory address. The PC environment is one of these in that the PC runs under protected memory and hence looking at memory outside this area can yield 'General protection errors '. In order to access the memory in a PC, the operating system must tag the memory area for common use by the program. This is usually achieved by either writing a windows driver for the hardware/address or my poking in an allocated area i.e. allocating static space by an array or using malloc to reserve bytes of area.
n=(x*2)/(1=0) the value x=0 and is used to stop the algerithin.The calculation is repeated using values of x=0 is input. There is only a need to check for error positions. The va
Your program should print the inverted map to the screen (using a format similar to the inverter project, but you will print out the url values instead of document IDs). You can pr
Disadvantages of pipeline: Pipeline architecture has 2 major disadvantages. First is its complexity and second is the inability to constantly run the pipeline at full speed,
Write 8086 initialisation routine required to program 8255 for mode 1 with Port A and Port B as output Ports and Port C as an input port. Indicate all the relevant signals.
Q. Differentiate the Multiplexer and Demultiplexer with respect to their concept, block diagram and circuit. Q. What is the difference between Synchronous sequential circuits an
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Question: (a) Primary and secondary memory differs in their way they access data: (i) Mention the four generic access methods usually present in a computer system. (ii) E
Explain Formats supported in Linux for executable programs. Linux supports two formats for executable programs: a. Out-binary format b. ELF - dynamic libraries
Problem 1 a) Give three reasons why connecting peripherals directly to the system bus are not a good practice. b) Name five categories in which the major functions on requ
Compare memory mapped I/O with I/O mapped I/O. Memory Mapped I/O Scheme: In this scheme there is only one address space. Address space is stated as all possible addresses tha
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