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To make it possible to implement semaphores on a computer with multiple CPUs that share a common memory, computer architects often provide a Test and Set Lock in- struction. TSL X tests the location X. If the contents are zero, they are set to 1 in a sin- gle, indivisible memory cycle, and the next instruction is skipped. If it is nonzero, the TSL acts like a no-op. Using TSL it is possible to write procedures lock and unlock with the following properties. lock(x) checks to see if x is locked. If not, it locks x and re- turns control. If x is already locked, it just waits until it becomes unlocked, then it locks x and returns control. unlock releases an existing lock. If all processes lock the semaphore table before using it, only one process at a time can fiddle with the variables and pointers, thus preventing races. Write lock and unlock in assembly language. (Make any reasonable assumptions you need.)
Express the statement X= (A*B)-(C*D)-E in the assembly language of each of 0- memory address machine, 3-register address machine with 3 registers R1,R2,R3, and 2-memory-register-address machine with three registers R1,R2, R3. Your solution should use..
Create a macro named mWriteInt that writes a signed integer to standard output by calling the WriteInt procedure. The argument passed to the macro can be a byte, word, or double word. Use conditional operators in the macro so it adapts to the size..
Write a set of assembly codes in uVision that performs the function described below. Begin with the assumption that 10 randomly selected integer numbers (data) are stored at 0x20002000 to 0x20002024 in sequence in the memory region.
Modify the single-cycle MIPS processor to implement one of the following instructions. Sec Appendix B for a definition of the instructions. Mark up a copy to indicate the changes to the datapath. Name any new control signals.
Write an assembly language program using the PEP8 assembler (free download) that corresponds to the following C++ program
You need to create a short assembly program named char_int, stored in file char_int.asm, that prompts the user for a character, and then for an integer.
Operand A and Operand B have to be signed 32 bit integers. So an operand can be a negative number. For example, if you input is (-1 + 3), it should return 2. Operator must be one of the characters(' + ', ' - ', ' * ', ' / ', ' % ')
Determine how many of the values in the locations with addresses $2000 to $2009 are less than $50, how many are equal to $50 and how many are greater than $50.
prepare an assembly program that reads in a number of cents. the program will write out the number of dollars and cents
problem 1 square root for this problem you will write a short assembly program that computes the integral square root
Implement the following pseudo-code in assembly language (assume unsigned numbers). Declare Apple and Pear as byte sized variables.
What would be the IEEE 754 double precision binary representation of the floating point value 2.71828×10-13? Express your final answer as a 16-hexdigit number and explain how your answer was obtained for full credit.
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