Chapter 7

Chapter 7 - Modular Programming Many programs are too large...

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Unformatted text preview: Modular Programming Many programs are too large to be developed by a single individual. A team of programmers develops different parts of the system and their program modules are linked together, thus becoming a large program which includes all modules programmed separately. PUBLIC and EXTERN These two directives allow the programmer to define labels, data, and entire segments as follows: PUBLIC defines that labels, data, and entire segments are available for other program modules to use. EXTERN declares that labels are external to a module. Libraries Collections of procedures that may be used by many different porgrams. DOS and BIOS Interrupts DOS and BIOS interrupts are used to perform some very useful functions, such as displaying data to the monitor, reading data from keyboard, etc. They are used by identifying the interrupt option type, which is the value stored in register AH and providing, whatever extra information that the specific option requires. BIOS Interrupt 10H...
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Chapter 7 - Modular Programming Many programs are too large...

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