RE: The Age Old - "What Eprom Programmer should Iget"question

I just bought the Willem Eprom Programmer. I am hoping someone can help me
out with a couple of easy questions about setup. I think the version I have
is called "PCB3". I think this one has added support for earlier eproms
like 2716 and 2732.

Let's say I just want to do a simple blank check on a 2716 eprom.

Step 1: Verify that it's blank on my Data I/O just to make sure. - Ok it's
definitely blank.

Step2: Connect the Willems eprom programmer to my computer using the
Parallel port. Ok. All the lights are on and look good.

Step3: Bring up the Software. Click Device -> EPROM -> 27XX -> 2716 - Ok

Step4: Click the button that says "Willem" so that it changes to PCB3
(since that's the board I'm using) - OK

Step5: Set the Jumper switches according to the diagram in the software - Ok

Step6: Put in the chip and click "Blank Check"

Am I missing any steps? I keep getting "Device not Empty"

Furthermore if I read the eprom, store the data to a binary file and try to
verify it with Romident it fails.

Or if I load an eprom from a file and then compare it with a rom with the
same code it fails. I've tried this with 2716, 2732, 27c4001 and 27c010.

So I think I must be doing something wrong.

Could someone offer me some help?

Thanks!

Matt

  _____

From: techtoolslist-bounces@flippers.com
[mailto:techtoolslist-bounces@flippers.com] On Behalf Of Bill Karkula
Sent: Saturday, October 29, 2005 5:50 PM
To: Technical Tools Mail List
Subject: RE: [Techtoolslist] The Age Old - "What Eprom Programmer should
Iget"question

I kept my workhorse Data I/O and bought one of those enhanced Willem
programmers on ebay. Mine cost less than $70 when I bought it over a year
ago. Works great on those larger eproms - I only use the Willem when the
Data I/O is incapable of programming the device. I have an old 100Mhz
Pentium laptop connected to my data I/o and to the willem and between the
two programmers I am covered.

Best Regards,

Bill

-----Original Message-----
From: techtoolslist-bounces@flippers.com
[mailto:techtoolslist-bounces@flippers.com]On Behalf Of Matt Rossiter
Sent: Saturday, October 29, 2005 7:43 PM
To: 'Technical Tools Mail List'
Subject: [Techtoolslist] The Age Old - "What Eprom Programmer should I
get"question

I've been happy with my Data I/O 29b programmer for a long time. I
especially like it because it does all the 82S proms that I need.

Lately I've had a number of people asking me to program some of the 27C4000
and 27C010 series eproms. I don't have the pinout cartridge to do those and
I'm not sure if I feel like hunting one down.

Even though I fix games on the side for fun and a little side cash, I'd like
to get a nice eprom programmer (to program the newer, bigger eproms) - but
not pay $Big Bucks$ for one.

I don't want to spend much more than $350 for one so I was thinking of maybe
the Needhams EMP-11 http://www.needhams.com/products-emp11.html or maybe
something that uses USB instead of parallel.

What do you guys recommend?

Thanks

Matt

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Received on Mon Nov 7 23:55:13 2005