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ORG : Origin:-
The ORG directive directs the assembler to begin the memory allotment for the specific segment, code or block from the declared address in the ORG statement. Whereasstarting the assembly process for a module, the assembler initialises a location counter to keep track of the allotted addresses for the module. If the ORG statement is not written in program, the location counter is initialised to 0000. If an ORG 200H statement is there at the beginning of the code segment of that module, then the code will begin from 200H address in code segment. In other term, the location counter willinitialise to the address 0200H instead of 0000H. Therefore, the code for different segments andmodules may be located in the available memory as required by the programmer. The ORG directive can even be utilized with data segments in similar way.
PROC: Procedure:-
The PROG directive marks the start of a named process in the statement. The types NEAR or FAR mention the type of the procedure, for example. Whether it is to be called by the main program located within 64K of physical memory or not. For instance, the statement RESULT PROC NEAR marks the start of a routine RESULT that is to be called by a program located in the similar segment of memory. The FAR directive which is used for the procedures to be called by the programs located in different segments of memory. The example statements are following:
Example :
RESULT PROC NEAR ROUTINE PROC FAR
Example : Add the contents of the 2000H: 0500H memory location to contents of 3000H: 0600H and store the result in 5000H: 0700H. Solution : Unlike the past example progra
INC: Increment : - This instruction increments the contents of the particular memory or register location by the value 1. All the condition code flags are affected except the carry
Write a program that allows a user to encrypt/decrypt a message using a shift cipher. The user should specify the key and the message. Your program should be able to handle messa
SCAS : Scan String Byte or String Word:- This instruction scans a string of words or byte for an operand word or byte specified in the register AL or register AX. The string i
SEG : Segment of a Label:- The SEG operator is which is used to decide the segment address of the, variable, label or procedure and substitutes the segment base address in plac
Write an assembly language program that defines symbolic constants for all seven days of the week
a pseudo-code to add username and password combination up to a limit of 10
Assume that the registers are initialized to EAX=12345h,EBX =9528h ECX=1275h,EDX=3001h sub AH,AH sub DH,DH mov DL,AL mov CL,3 shl DX,CL shl AX,1 add DX,AX
Conditional branch Instruction When these type of instructions are executed, they transfer control of execution to the address mention relatively in the instruction, provided t
Program : A program to move a string of the data words from offset 2000H to offset 3000H the length of the string is OFH. Solution : For writing this program, we will use
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