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DAA: Decimal Adjust Accumulator:- This instruction is utilized to convert the result of the addition operation of 2 packed BCD numbers to a valid BCD number. The conclusion has to be only in the AL. If the lower nibble is greater than 9, after addition opraction or if AF is set, it will add 06 to the lower nibble in the AL. After adding 06 in the lower nibble of the AL, if the upper nibble of AL is higher than 9 or if carry flag is set, DAA instruction adds 60H to the AL. The instance given below explain the instruction.
Example :
The instruction DAA affects CF, AF, ZF, and PF flags. The OF is not defined.
Ask(2) Write a program to mask bits D3D2D1D0 and to set bits D5D4 and to invert bits D7D6 of the AX register question #Minimum 100 words accepted#
Intel's 8237 DMA controller : 1) The 8237 contain 4 independent I/O channels 2) It contains 27 registers, 7 of which are system-wide registers and 5 for each channel. 3)
You have to write a subroutine (assembly language code using NASM) for the following equation. Dx= ax2+(ax-1)+2*(ax+2)/2
Flowchart for the sequence of 8251 Whether the control, mode or sync character register is selected depends on the accessing sequence. A flowchart of the sequencing is given i
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?
i have a question.
Opcode : The opcode generally appear in the first byte.but in a few instructions, a register objective is in the first byte and few other instructions may have their 3-bits of
Format of Control Register The format for the control register is given in Figure. Bit 0 of this register might be one before data may be output and bit two might be one
• To develop an assembly language program to control a "simulated" intelligent domestic lighting system with the intention of deterring burglary. • To produce a schematic circuit d
Write a program to separate out positive and negative numbers from a given series of 16-bit hexadecimal numbers.
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