Software interrupts-microprocessor, Assembly Language

Software Interrupts

Software interrupts are the result of an INT instruction in an executed program.  It may be assumed as a programmer triggered event that immediately stops execution of the program and passes execution on to the INT handler. The INT handler is typically part of the operating system and will determine the action that should be taken (for example output to execute, file screen etc.) An instance is INT 21h, whereas it is the DOS service interrupt. Whenever the handler is called it will read the value and stored it in AH (sometimes even AL) and then jumps to the right routine.

Posted Date: 10/10/2012 8:15:12 AM | Location : United States







Related Discussions:- Software interrupts-microprocessor, Assignment Help, Ask Question on Software interrupts-microprocessor, Get Answer, Expert's Help, Software interrupts-microprocessor Discussions

Write discussion on Software interrupts-microprocessor
Your posts are moderated
Related Questions
Type of Microprocessor : Microprocessors fall into 3 categories: Single Chip Microcomputers: - Contains RWM, ROM, microprocessor, I/O port, timer and clock. General pu

Interrupt Priority Management The interrupt priority management logic indicated in given figure can be implemented in several ways. It does not required to be present in system

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

Typical link to modems for synchronous and asynchronous transmissions are shown in Figure. With regard to the synchronous connections it is consider that the timing is controlled

Queue Operation :   RQ/CT0, RQ/G1-Request/Grant:   These pins are utilized by other local bus masters, in themaximum mode, to force the processor to release the loca

Difference between div and idiv

Read Architecture : Look Aside Cache In "look aside" cache architecture the main memory is located conflictingthe system interface. Both the cache main memory sees a bus cycle

CMPS : Compare String Byte or String Word:-The CMPS instruction may be utilized to compare two strings of Words or byte. The length of the string ought to be stored in the CX. If

Architecture Of 8088 The register set of 8088 is accurately the same as in to 8086. The architecture of 8088 is also same to 8086 except for 2 changes; a) 8088 has 4-byte instr

ROR : Rotate Right without Carry: This instruction rotates the contents of destination operand to the bit-wise right either by one or by the count specified in register CL, exclud