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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.
For this assignment, you will need to create an ARM assembly language code routine that implements an algorithm to search through an array and find BOTH the minimum and maximum val
Q. Explain Call and Return Statements? CALL: CALL X Procedure Call to procedure/function named X CALL instruction causes the following to happen: 1. Decre
1+3+5+....... +11
A combinational circuit has 3 inputs A, B, C and output F. F is true for following input combinations A is False, B is True A is False, C is True A, B, C are
TARGET = "_blank" "_blank" opens new document in a new window. Run the code given in Figure and check how it works. This value doesn't require the use of any frames. "_blank"
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What are assembler directives? Ans: These are the instructions that direct the program to be executed. They have no binary corresponding so they are called pseudo-opcodes. The
Resource Dependence The parallelism between instructions can also be affected because of the shared resources. If two instructions are occupying the same shared resource then i
Explain the need for user-defined functions. The need for user-defined function: 1. A programmer might be having a block of code that he has repeated forty times all over t
Synchronous dynamic random access memory (SDRAM) is dynamic random access memory (DRAM) that is initialized with the system bus. Classic DRAM has an asynchronous interface, which m
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