What is a macro in HDL?

[koppolu1981]

Hi,
Can anyone explain ,what is a macro in HDL? How to use it?
Difference between macros in programming languages and HDLs?
Thanks in advance,
Ram

 

[vishwa]

A macro is nothing but a predefined HDL component available in HDL library.

AND, OR, XOR, etc. are available in library. Like that multiplier, squareroot, and other application specific components are called macros.

 

[naveen reddy]

Macros are intermediate cells
i.e they are not either the leaf level cells like AND, OR etc or top level cells like ALU, CPU etc

they are the intermediate cells combining of leaf level cells like mulitiplexers, decoders,encoders etc
The library containig the macro cell is called GTECH library