Recommendations for an Eprom Emulator

Hello,

Its time for an EPROM emulator. I would prefer USB, >1MBit, fast down load, Win2k/XP compatible tools,

Reply to
WYSIWYG
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Hello !

Reply to
Antti Keskinen

EPROM emulators are hardware. They are RAM with some logic, pretending to be an actual EPROM. You download the data into them through another port (such as USB), which is where his Win2K/XP comes in. The target system reads the data as if it was connected to an EPROM, which is where the size and access time specs come in.

Here's one from a Taiwan-based company and sold by a UK-based company:

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(I hope the Denbighshire company knows more about supporting such products than they know about using apostrophes with possessive pronouns).

Best regards, Spehro Pefhany

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"it's the network..."                          "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
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Reply to
Spehro Pefhany

Thanks Chris,

Various CPUs. I like to "repurpose" older electronics I find at my local surplus shop. I look for boards ideally with socketed EPROMs so I can easily extract the code and make changes. This started a long time ago with a Defender video game. I have recently worked with the 6809, 6502, Z80, 8085,

68HC11, HPC46003. The clock rates on these older processors are slow 1-20MHz so the demands on the EPROM are not so great.

Bob

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Reply to
WYSIWYG

Here is one :

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-jg

Reply to
Jim Granville

On Fri, 25 Nov 2005 17:17:48 GMT, "WYSIWYG" wrote in comp.arch.embedded:

Reply to
Jack Klein

In article , Antti Keskinen writes

No. an Emulator (or an ICE) is hardware A simulator is software.

An Eprom Emulator is a piece of hardware that was popular in prehistoric times.... about 5 years or so ago and back. This is when Eproms were in DIL packages and took 40 minutes to erase.

It was in many ways the JTAG of it's day.

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\/\/\/\/\ Chris Hills  Staffs  England     /\/\/\/\/
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Reply to
Chris Hills

In article , WYSIWYG writes

Reply to
Chris Hills

I looked into what one of my favourite Forth Vendor's was selling these days and found that they currently sell the PROME-ICE device. This is a more direct link.

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Paul E. Bennett ....................
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Reply to
Paul E. Bennett

Although I used our real HPC emulator on occasion (until it died), I did a great deal of my HPC testing and debugging using a row of DIL eeproms and a UV erasor. Since I only ever need to make minor changes to old HPC programs these days, I use trial-and-error with that most oxymoronic of devices - the OTP EPROM.

Reply to
David Brown

In article , WYSIWYG writes

I agree with you Go for am Eprom emulator... You may find old ICE for some one or two of those but an Eprom Emulator is the best compromise for that lot.

Have fun.

BTW a lot of the older eprom programmers (Dataman s4 for example) also had an emulation mode.

Reply to
Chris Hills

My team has used PROMIce emulators for over 10 years. While the emulators are well built and reliable, in the past couple of years the company seems to have contracted or changed ownership, to where it was difficult to get a salesman on the phone, and the web site was unreliable.

Unlike virtually every other development tool, PROMIces have never gotten less expensive, and as near as I can tell, still don't support USB. The parallel port driver required for use with NT/2000 is difficult to install correctly, and, for me anyway, caused BSOD (although the serial link is very reliable, although slow).

Rather than offering 3.3V emulators, these require a level-shifting adapter, which makes the already fragile cabling to the embedded device a complete pain.

Your mileage may vary.

--Gene

Reply to
Gene S. Berkowitz

Try

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They make a very quick Ethernet based emulator with

3/5V support and plenty of memory. I use it here almost daily.

LC

Reply to
ssc

It's not one I am using (my old set-up from my Forth vendor is still working for me from the parallel port). I guess that I should probably consider an update to an ethernet connected one as legacy style interfaces become rarer on available PC hardware.

As it stands, it is for the OP to filter and evaluate the various suggestions that have already been made.

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Paul E. Bennett ....................
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Reply to
Paul E. Bennett

While that is true, they only do one EPROM emulation at a time. If you need to stack emulators for multi-prom devices then it becomes a somewhat more expensive solution (eg 16 bit systems). I have the S3 as well as the stackable system run from the parallel port.

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Paul E. Bennett ....................
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Reply to
Paul E. Bennett

That is the problem the disappearing parallel and serial port. so many bits of kit used the parallel and serial ports.

I could make all sorts of gizmos with an RS232 interface but I can't just "knock up" something with USB or ethernet. A great pity.

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\/\/\/\/\ Chris Hills  Staffs  England     /\/\/\/\/
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Reply to
Chris Hills

As the probable Forth vendor for the Leburg EPROM emulator, which used an ISA card in the PC, let me comment on EPROM emulators.

These days, EPROMs are mainly a legacy issue. Emulating Flash is just more expensive because of the variety of pinouts. In addition, most Flash is surface mounted, and a large number of CPUs use JTAG for programming external Flash.

If you really want an EPROM/Flash memory emulator with an Ethernet or USB interface, a good one will be expensive. Most of our clients still using Leburg emulators keep an old PC alive to run them.

Stephen

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Stephen Pelc, stephenXXX@mpeforth.com
MicroProcessor Engineering Ltd - More Real, Less Time
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Reply to
Stephen Pelc

In article , Chris Hills writes

Some one sent me an off list emails saying: "USB is easy use the FT232BM chip."

As it was one of these numbered aol accounts it is probably from some one who works for the company that makes them.

The part in question is about 6USD and is a LQFP.....

So as I said: It is much easier to use serial, rather than in this case use serial and then add an additional QFP part to convert to USB.

If I wanted USB I would use a micro with USB on it.

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\/\/\/\/\ Chris Hills  Staffs  England     /\/\/\/\/
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Reply to
Chris Hills

SST makes flash devices that directly replaces EPROMs. They can be programmed in an EPROM programmer, but can be electrically erased before re-programming.

Regards Anton Erasmus

Reply to
Anton Erasmus

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