Programming 1702 EPROMs, ProLog Programmer question

Brent Hilpert hilpert at
Wed Mar 8 23:50:34 CST 2006

"Joe R." wrote:
> Hi Serge,
>    I was probably the one that asked the question! As you already know from
> our direct E-mails I have a Prolog programmer and the plug-in for
> programming the 1702s. I've been able to use it to copy 1702 EPROMs but I
> haven't been able to read or alter the EPROM contents once they're in the
> programmer's buffer therefore I haven't been able to alter the programming
> in the 1702s. I don't know if I was doing something wrong or if the
> programmer has a problem. Like you I was looking for a manual for the Model
> 900. I have the manual for the 980 but it doesn't help with this problem.
>       Joe
> At 06:01 PM 3/4/06 -0500, you wrote:
> >Hi,
> >
> >Sorry to bother you, but I just saw a question you asked on
> >about programming a 1702 on a Prolog M900 machine.
> >
> >Did you ever get an answer or figured out how to make it work ?
> >
> >Cheers,
> >
> >Serge Roube

I have the Prolog M900B and manual. ANAICF the M900B is the M900 with the
"Buffer option". (The big white silkscreened model number on my M900B still
says M900, so if your's has a buffer then it probably is a M900B.)

I don't have a scanner here but can look into scanning the manual sometime, just
don't hold your breath. In the meantime I'm happy to attempt to answer some
questions about it's operation. The user interface /is/ rather awkward.

Note there are a lot of options, mostly with regards to various communication
interfaces (parallel/TTY/RS232/flow control/baud rates). Some of the installed
options may be listed inside the plug-in compartment, but if you want a
reliable list you have to look inside the case as to what is installed in the
14 sockets for the 1702 firmware EPROMs (it's a 4004 running the show).
(If you make a list I should be able to tell you what you have. Mine has the
RS232 option and I have managed to transfer data to/from a computer.)

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