'e' What To Learn ?

E language is a vast language, so learning everything in short time is not possible. But to get started or to get to a position where one can write testbench and checker,

 one really needs to learn limited part of 'e' language. Lets assume that you need to develop a testbench as in below figure.

 

In e, we need to code the following components.

• Base Object
• Transaction Generator
• Driver
• Input/Output Monitors
• Checker/Scoreboard

Base Object

As seen in earlier section, base object is used across the testbench for communication of data in a standard structure format. Following things are needs to be write a base object in e

• data types
• struct
• sub-types
• constrains
  • keep
  • gen before
  • soft and hard constrains
• condition flow control
• methods
• printing routines

Transaction Generator

• Transaction generator is the the one which generates the transactions. To do this job one needs to know the following gen and gen keeping
• don't gen and physical fields
• events
• methods and tcm

Driver
To model driver, one needs to know the following

• unit
• packing
• methods and tcm
• Interfacing with simulatoz

Input/Output Monitors
Once one knows about base object, transaction generator and drive, then coding monitors are very simple.

unpacking

Checker/Scoreboard

To model the checker or scoreboard one needs to know following e languages construct
list and keyed list

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