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CMP: Compare: - This instruction compares the source operand, which can be a register or memory location an immediate data with a destination operand that might be a register or a memory location. For the purpose of comparison, it subtracts the source operand from the destination operand but does not stock up the result anywhere. The flags are affected and depending on the result of the subtraction. If both of the operands are equal to zero flag is set. If the source operand is higher than the destination operand, carry flag is set or else is reset. The instance of this instruction are following:
Example :
1. CMP BX, 0100H Immediate
2. CMP 0100 Immediate [AX implicit]
3. CMP [5000H],OIOOH Direct
4. CMP BX, [SI] Register indirect
5. CMP BX, CX Register
INT N : Interrupt Type N:- In the interrupt structure of 8086/8088, 256 interrupts are distinct equivalent to the types from OOH to FFH. When an instruction INT N is executed,
The Alpha : The development of the Alpha chip start in the year 1988 The new chip used 64 bit technology, let users to pack more complexity into their programs than exis
what is the hex value in ax after executing the instructions ax= 1E8A bx=4080 add al,bl sub ah,bh
move a byte string ,16 bytes long from the offset 0200H to 0300H in the segment 7000H..
Write a procedure to read a text file and copy its contents to another text file using 8086 assembly language .
Problems: 1. Write a single program. Each of the problems (2-4) should be written within a procedure. Your “main” procedure should call each procedure. Before calling each proc
Explain the basic method for implementing paging
Interrupt Table Each interrupt level has a booked memory location, called an interrupt vector. All these vectors (or pointers) are stored in the interrupt table. Table lies at
Modes of 8254 : Mode 0 (Interrupt on Terminal Count)-GATE which value is 1 enables counting and GATE which value is 0 disables counting, and GATE put not effect on
1- Write an assembly program that: a- Defines an array of 10 (word type)elements; b- Finds out the number of negative elements c- Calculate the summation of the posi
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