Re: Memory woes

Ed Casas (edc@ece.ubc.ca) Wed, 29 Nov 2000 12:39:19 -0800 

Date: Wed, 29 Nov 2000 12:39:19 -0800
From: Ed Casas <edc@ece.ubc.ca>
Subject: Re: Memory woes



> Lets take the ROM for example. It has 16k and in order to
> address 16k we need 14 pins (ideally this would be A13-0 of the
> address bus). But since there is no A0 on the address bus, we
> would then have to use A14-1.

That's correct.

> But is [if?] we did this the two 16k block would not be in a
> contiguous range of memory.

Why not?  Each ROM bank is 16kx16 (32 k bytes).  We could (for
example) have one ROM bank start at address 0 0000H and one
starting at address 0 8000 (32k).

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