Re: The ROM

Ed Casas (edc@ece.ubc.ca) Sun, 27 Feb 2000 17:29:53 -0800 

Date: Sun, 27 Feb 2000 17:29:53 -0800
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: The ROM



> From what I've read from the previous posts and the
> documentation, am I correct to say that the ROM is basically
> the program on page 3 of the assignment encoded into hardware?

Yes.

> If I look up address 0, I'll get the opcode for PUSH, address 1
> will give OUTP, address 2 will give INP, etc.  Is this correct?

Yes.

> And a final question: is the opcode for PUSH up for us to
> decide as long as it is between the values 0-127 inclusively?

No.  It has to correspond to the value of the operand of the
PUSH.

In assembly language the value of a constant operand is the value
of constant and the value of a label operand is the address of
the label.

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