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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
Machine Coding the Programs So far we have describe five programs which were written for hand coding by a programmer. In this, we will now have a deep look at how these prog
Develop a suitable schematic circuit diagram of your system showing the interface between the PIC16F84 and the existing mains light & switch, including 5V derivation from the 240V
program to find negative and positive integers from given signed numbers with output and explanation of every instructions.
#include"lcd.asm" ; assembly file is included for displaying lcd characters Main: PORTA EQU 0xF80 ; PORTS PORTB EQU 0xF81 PORTC EQU 0xF82 PORTD EQU 0xF83 R
Declare 1 constant. This can be done just below the prototype section. Put the following divider above the constant section. ;************************ Constants ****************
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
PTR : Pointer:- The pointer operator which is used to declare the type of a variable, label or memory operand. The operator PTR is prefixed by either WORD or BYTE. If the prefi
Machine Level Programs In this section, a few machine levels programming instance, rather then, instruction sequences are presented for comparing the 8086 programming with that
You have to write a subroutine (assembly language code using NASM) for the following equation.
a- Trace the following program fragment and find out the content of ax after the the execution of the program. X db 5,7 -3,-9,4,-7,9 Mov
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