"Hold" operation for A-datapath

Amy Zheng (azheng@unixg.ubc.ca) Mon, 06 Nov 2000 22:53:30 -0800 

Date: Mon, 06 Nov 2000 22:53:30 -0800
From: Amy Zheng <azheng@unixg.ubc.ca>
Subject: "Hold" operation for A-datapath



Hello:

	Do we really need a "hold" operation for the A-datapath, which select the
previous value of "a" for the current "a" value?  Isn't it only needed only
when the decoder is acting as a state machine, not as in this case where it
is a combinational logic circuit?  If we need it, how are we suppose to set
the condition (in the decoder) for this operation?

	Thanks.

Amy,