Circuit Cellar CCSEP EPROM programmer - test-drb@ccmp.vtda.org

15 Feb 2008

Date: Fri, 15 Feb 2008 04:24:44 -0500
From: "Roy J. Tellason" <rtellason at verizon.net>
Subject: Re: EPROM programmer

On Friday 15 February 2008 04:15, M H Stein wrote:

...
 > The manual has pretty clear instructions for
changing the baud rate, up to
> 19.2 (pp. 8&9); you'll need 2x27128 unless you have a second programmer.

...
 Eh?  I don't have the manual with mine,  but
2x27128 shouldn't be a problem,  
I guess. 
-----
With the version 1 S/W you have to burn a copy of the system ROM first in
order to patch it and then burn the final version. Version 2 of the S/W has an
option (12) to copy the system ROM to RAM (if you have enough installed)
so you only need to burn one 27128.
===

...
 > See MCM68764 & MCM68766 (24 pin 8Kx8) 
...
 I wasn't aware of these.  Though I suppose I'd
still need an adapter,  for the 
programmer?  I'll look for some data on them. 
----
Not necessarily; the V2 S/W has provisions for user-defined EPROM
parameters, but I don't know offhand whether the hardware can accommodate
68754/6s (or 2532s for that matter).

mike