Translating a microprogram to hardwire control

Control unit is the most important portion of CPU. The control unit design must include logic for sequencing through micro-operations, for executing micro-operations, for interpreting opcodes and making decisions based on ALU flags. The implementation of control unit has been used with a wide variet...

Full description

Saved in:

Bibliographic Details
Published in:	2008 5th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology Vol. 2; pp. 689 - 692
Main Authors:	Aye Thi Ri Wai, Phyu Phyu Tar
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-05-2008
Subjects:	Automata Clocks Computers Hardware Hardware design languages Microprogramming Programming
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Control unit is the most important portion of CPU. The control unit design must include logic for sequencing through micro-operations, for executing micro-operations, for interpreting opcodes and making decisions based on ALU flags. The implementation of control unit has been used with a wide variety of techniques such as; hardwired implementation and microprogrammed implementation. In hardwired control, it is very time consuming and hard to design. The use of microprogramming simplifies the design of the control unit, but it will be slower in speed than a hardwired unit. Hardwired control is difficult to change or extend the design if it wishes to debug or add a new machine instruction. So this paper will find an easy way to design by microprogram and to be translated it to hardwired one on later. To translate the microprogram into actual hardware, it is needed to specify how each field translates into control signals. A microprogram can be implemented with finite state control or a microcode implementation with an explicit sequencer. The finite state machines are usually represented graphically. In this paper, Verilog software is used to translate microprogram to hardware.
ISBN:	1424421012 9781424421015
DOI:	10.1109/ECTICON.2008.4600525