On Sun, 15 Aug 2010, Mark Tapley wrote:
Tony,
At 19:37 -0500 8/13/10, Alexandre wrote:
I think I still have an image of the old site
on my desktop, mail me if
you want that
Alexandre's link,
http://web.archive.org/web/20080621113020/http://www.willem.org/
points to a page which my machine loads only glacially, apparently because
the server isn't responding fast.
Meantime, my Googling for "willem programmer" produced this page:
http://www.sivava.com/
which describes a commercially available EPROM programmer. Packages start at
US$39. Many adaptors are available, prices $3 - $70. Driver software appears
to be Windows only (9x - XP). The programmer looks like a single
free-standing circuit board, ~9 IC's plus a lot of sockets including a DIP
ZIF socket. USB power, "DB25" data cable (!). Ah, reading further, there's
an
AC/DC power adaptor as well, so I guess you don't need a PC with both USB and
Serial.
A word of warning about the sivava programmer: It's a modified Willem
unit with its own special software. The developer forked the Willem
project and never released his changes. Caused a lot of rancor.
Also, forget about technical support. He is glad to take your money, but
don't expect any questions or inquiries post-sale to be answered.
Finally, the DC-DC converter used to derive Vpp for 21V EPROMs is
underdesigned and unlikely to yield reliable results. There was a mod kit
available from one of the Willem forum regulars that I ended up
installing.
All in all, the Sivava was more trouble than it was worth. There are eBay
folks selling "genuine" (i.e. unmodified) Willem designs for less money.
Steve
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