Re: EPROM erasing, programming

Start here...

http://www.arlabs.com/help.htm

I recommend practicing on a new Eprom and back up your old ones
before erasing. Also Eproms do not ALWAYS reprogram, you might get a
dud - about every fifty attempts to reprogram older 70s Eproms we
find a dud.

John :-#)#

At 12:30 PM -0700 9/14/06, Cameron Rector wrote:
>At risk of sounding uneducated.............
>
>I am in the preparation stage of programming my epoms for my
>gravitar game and I wanted to ask some basic questions.
>Currently I have the programmer working as a stand alone and I am
>working on configuration issues with the com ports. (I can fix this,
>I just have to spend time on it)
>I also borrowed a small (5 chip) eprom eraser.
>I have found the new rom images (rev 3). Not sure which file goes
>into which rom, but I think I can figure this out. I am guessing the
>ID on the schematic or PCB will give me the answer.
>Now for my questions:
>
>What process should I follow? should I download the current roms and
>try to save whatever is on them? Should I just wipe them out and
>reload them. Should I buy a spare set, program them and then swap
>them out?
>
>Is there any chance (not knowing what I am doing) that I could
>damage my roms? I'm not going to plug them in backwards or anything,
>but I could write something to them I didn't want too. (I'm learning
>that part)
>
>Should I buy one spare rom just to practice with and swap it in and
>out of my board when I think I got it right?
>
>And last, has anyone ever wrote a step by step "how to reprogram
>your eproms" for dummy's?
>
>I am not the one to write code for one of these machines however, I
>feel I should be able to load the program into these chips. Maybe my
>confidence comes from my ignorance.
>
>Guidance is greatly appreciated,
>Cameron

-- 
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
                  www.flippers.com
"Old pinballers never die, they just flip out"
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com