Re: Asn 2 questions

Ed Casas (edc@ece.ubc.ca) Mon, 6 Nov 2000 16:42:33 -0800 

Date: Mon, 6 Nov 2000 16:42:33 -0800
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: Asn 2 questions



> For the RAM inputs, do we need a reset signal?

No.  RAMs don't usually have reset signals.

> or just set the output as zero when other the operation is
> not the rest of the three (pc, pc+1, and address of current
> instruction)?

The RAM does not know what operation is being executed by the
CPU.  It simply outputs the data at the given address (or stores
data into the given address).

> For the 1st part, do we have to design the Instruction Decoder 'cause
> it seems that we need to use it for other components.

No, you can specify all of the inputs with the waveform editor.

> Also, do we need to define all types, subtypes, and constants
> for now?

You should define the ones you need.  You can add to the packages
and change datapaths later if you need to (you'll have to hand in
everything again, with any changes, for Part 2).

-- 
Ed Casas   edc@ece.ubc.ca   http://casas.ece.ubc.ca   +1 604 822-2592