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DMA controller :
Steps include in transferring a block of data from I/O devices (for example a disk) to memory:
1. CPU sends a signal to initiate disk transfer through I/O interface
2. CPU sends starting address of the block
3. Disk driver reads starting address, and then reads one block of data and puts it in its own buffer
4. Disk driver sends interrupt signal to the CUP
5. CPU reads the datum into its registers (accumulator)
6. CPU examine if there is more to transfer, if answer is yes, the CPU signals the disk driver to do so meanwhile
7. CPU transfer the datum from registers to memory and increments its pointer to memory
8. DMA controller takes care of the last few steps (from signalling disk to transfer) .
External Hardware-Interrupts External hardware-interrupts are generated by controllers of external devices or coprocessors and are connected to the processor pin for Non Mask a
You have to write a subroutine (assembly language code using NASM) for the following equation.
A good starting point for your program is the toupper.asm program shown in class. It already queries the user for input and sets up a loop that looks at each character of the input
INTO : Interrupt on Overflow:- It is executed, when the overflow flag OF is set. The new contents of IP and CS register are taken from the address 0000:0000 as described in INT
write shell to calculate basic salary from given .
This is a short program to practice assembly language loops and if/else statements. You will use various jump commands and the cmp instruction. The program will generate a random
write an assembly language program to find average of odd numbers from an array of 8 bit numbers
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Cache Memory Caching is a technology based on the memory subsystem of any computer. The majoraim of a cache is to accelerate the computer while keeping the cost of the computer
OR: Logical OR: The OR instruction carries out the OR operation in the similar way as described in case of the AND operation. The restriction on source and destination operands ar
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