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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) .
1. Write an assembly program that adds the elements in the odd indices of the following array. Use LOOP. What is the final value in the register? array1 DWORD 10, 20, 30, 40, 50, 6
1. Start your program at address $8500. To do this you need to inform the assembler, through the EQU and ORG assembler directives, that you want your program to start at $8500. Thi
Architecture Of 8088 The register set of 8088 is accurately the same as in to 8086. The architecture of 8088 is also same to 8086 except for 2 changes; a) 8088 has 4-byte instr
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write an assembly language program to find average of odd numbers from an array of 8 bit numbers
#question. counters using 8051.
what will be the value of EAX after following instructions execute? mov bx, 0FFFFh and bx, 6Bh
Mov ax, [1234h: 4336h + 100]
How to define procedures?
Write Policy A write policy determines how the cache deals with a write cycle. The 2 common write policies areWrite-Throughand Write-Back. In Write-Back policy, the cache behav
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