src/pc_behave.vhd File Reference

Program Counter (PC). More...

Architectures

PC Entity
behave Architecture

Detailed Description

Program Counter (PC).

The PC is reset to 0000 before the processor runs. Then the PC send the address 0000 to the RAM/ROM,
to fetch and exectute the corresponding instruction. After the first instruction is fetched and exectuted
the PC sends the following address 0001 to the RAM/ROM, and so on.
The PC is part of the conrtol unit, it counts from 0000 to 1111.
It is called pointer; it points to a memory location where instruction is stored.
It work as 4-bit counter.

Generated on Wed Apr 11 09:49:17 2012 for Microprocessor 8-bit by  doxygen 1.6.3