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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.
Define DMA. The transfer of data among a fast storage device such as magnetic disk and memory if often limited by the speed of the CPU. Removing the CPU from the path and letti
Make a console application. Add class 'Account' having variables as num (integer) name (String), bal (double), ac_code (byte). Describe four different constructors to initialize th
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Any function can be expressed in a truth table.A truth table lists all possible combinations ofinputs and gives the output produced in eachcase.Truth tables must include all combin
THE DIFFERENCE ENGINE - Pascaline The difference enigne was based on the mathematical principle of finite differences and was used to solve calculations based on large numbers
Subtraction 11011-11001 using 2's complement. Ans. 11011 - 11001 = A - B 2's complement of B = 00111 1 1 0 1 1 + 0 0 1 1 1 1 0 0 0 1 0 Ignore carry to get answer as 00010 = 2.
Q. Define Far and Near Procedures? Procedure offers the primary means of breaking the code in a program into modules. Procedures have one maindrawbackwhich is they need extra c
Hard Disk Technology: Figure of a computer hard disk drive HDDs record data by magnetizing ferromagnetic material directionally, to represent
Handlers Classification In 1977, Wolfgang Handler suggested a complex notation for representing the pipelining and parallelism of computers. Handler's categorization addresses
what is structure tensor?how we calculate for image pixel?
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