What is macro call, Computer Engineering

Assignment Help:

What is macro call? Explain.

Macro call: While a macro name is used along with a set of actual parameters this is replaced through a code generated from its body. Such code is termed as macro expansion. There are two kinds of expansions:

a. Lexical expansion

b. Semantic expansion

Lexical expansion: This means a replacement of character string by the other string during program generation. This is generally used to replace occurrences of formal parameters through corresponding actual ones.

Semantic Expansion: This implies generation of instructions build to the requirements of exact usage. This is characterized by the fact that various uses of a macro can lead to codes that differ in the number, opcodes and sequence of instructions.


Related Discussions:- What is macro call

Examples of input, (i)  Input a single ASCII character into BL register wit...

(i)  Input a single ASCII character into BL register without echo on screen  CODE SEGMENT  MOV AH, 08H;         Function 08H  INT 21H          ;         the character inpu

Applied physics, #what is nicol prism.its construction and working

#what is nicol prism.its construction and working

Structure of 8086 cpu, 8086 microprocessor comprises two independent units:...

8086 microprocessor comprises two independent units:  1.  Bus Interface unit 2.  Execution unit Please refer to Figure below. Figure: The CPU of INTEL 8086 Microp

What are the major functions of io system, What are the major functions of ...

What are the major functions of IO system?  i. Interface to the CPU and memory by the system bus.  ii. Interface to one or more IO devices by tailored data link.

What do you mean by directives, Q What do you mean by Directives? Assem...

Q What do you mean by Directives? Assembly languages support numerous statements. This allows you to control the way in which a source program assembles and list. These stateme

Sql requirements in the sap development system, Which interface converts SQ...

Which interface converts SQL requirements in the SAP development system to those of the database? Database Interface converts SQL in the SAP.

Device drivers in assembly, Device drivers are special programs installed b...

Device drivers are special programs installed by config.sys file to control installable devices.  So personal computers can be expanded at some future time by installation of new d

Write about TSR, Write about TSR TPA also holds TSR (terminate and stay...

Write about TSR TPA also holds TSR (terminate and stay resident) programs which remain in memory in an active state until activated by a hot-key sequence or another event like

Illustrate the application of e-commerce in home banking, Illustrate the ap...

Illustrate the application of E-Commerce in Home Banking. Home Entertainment: E-commerce has show the way to HOME ENTERTAINMENT. The video aspect generally includes a la

Stata about the magnetic stripes, Stata about the Magnetic stripes  Th...

Stata about the Magnetic stripes  These comprise information/data stored on magnetic material often on the back of a credit/debit card; the information is automatically read b

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd