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LENGTH : Byte Length of a Label:
This directive is not available in MASM. This is used to mention to the length of a data array or a string.
MOV CX. LENGTH ARRAY
This statement is when assembled will substitute the length of the array ARRAY in bytes, in the instruction.
LOCAL the variables, labels, constants or procedures declared LOCAL in a module are to be used only by that module. At a later time, some other module can be declare specific data type LOCAL, which is previously declared LOCAL by another module or modules.
Thus the similar label may serve different purposes for type different modules of a program. Having a single declaration statement, a number of variables may be declared local, as shown.
LOCAL a, b, DATA, ARRAY, ROUTINE
Write a program that performs the addition, subtraction, multiplications, division of the given operands. Perform BCD operation for addition and subtraction.
write an assembly program to display triangular star like shape
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
Port Mapped I/O or I/O Mapped I/O I/O devices are mapped into a separate address space. This is generally accomplished by having a different set of signal lines to denote a mem
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
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 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
what is the hex value in ax after executing the instructions ax= 1E8A bx=4080 add al,bl sub ah,bh
The addressing modes for the sequential control transfer instructions are described below: 1. Immediate: Immediate data is a part of instruction,in this type of addressin
AAS: ASCII Adjust AL After Subtraction AAS instruction correct the result in the AL register after subtracting operation of two unpacked ASCII operands. The result is in unpacked
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