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NAME :
Logical Name of a Module: The NAME directive which is used to assign a name to an assembly language program module. The modulecan now be mention to by its declared name. The names, if chosen to be suggestive, may be point out the functions of the different modules and hence can help in the documentation.
OFFSET : Offset of a Label:
When the assembler comes across the OFFSET operator with a label, firstly it computes the 16-bit displacement (it is also called as offset interchangeably) of the specific label, and replaces the 'OFFSET LABEL' string by the computed displacement. This operator is used with, strings, arrays, labels and procedures to decide their offsets in their default segments. The segment may be decided by another operator of same type, which is, SEG. Its most general use is in the case of the indirect, indexed, based indexed or other addressing techniques of similar types, used to indirectly refers to the memory. The instance of this operator is as follows:
Example :
CODE SEGMENT
MOV SI, OFFSET LIST
CODE ENDS
DATA SEGMENT
LIST DB IOH DATA ENDS
DMA DMA stands for Direct Memory Access It is uses same Address/Data lines on ISA bus It controls the ISA bus instead of the processor ("bus master") Floppy
from pin description it seems that 8086 has 16 address/data lines i.e.AD0_AD15.The physical address is however is larger than 2^16.How this condition can be handled
Power Pc : A Power PC is a microprocessor designed to meet a standard, which was combining designed by Motorola, Apple and IBM. The PowerPC standard specifies a common instruc
LDS/LES Instruction execution : LAHF : Load AH from Lower Byte of Flag: - This instruction loads the AH register with the lower byte of the flag register. This instruction ca
String Manipulation Instruction A series of words or data bytes are available in memory at consecutive locations, to be mention to individually or collectively, are known as by
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
The modes are determined by the contents of the control register, whose format is given in Figure These modes are: Mode 0: If a group is in mode 0, it is divided into 2 sets.
NAME : Logical Name of a Module: The NAME directive which is used to assign a name to an assembly language program module. The modulecan now be mention to by its declared name.
I need help with assembly programing
External Hardware-Interrupts External hardware-interrupts are generated by controllers of external devices or coprocessors and are connected to the processor pin for Non Mask a
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