13 Feb
2007
13 Feb
'07
7:31 p.m.
John Robertson wrote:
Why not just buy a used DATA I/O 29B or 29A with a
UniPak? This machine
will burn almost every PROM that was made...and they are fairly cheap on
eBay these days. In my shop I have three of these units. Two are backups
if the main machine ever fails.
Because I don't need another huge, power-hungry piece of kit lying around.
Plus I suspect I could build a PROM programmer out of stuff in my junk box,
it's just that I can't get my mitts on the datasheets for the chips. TI are
nice enough to put their programming algorithms online, I've found a textual
description of the NatSemi algorithm (though it would be nice to have the
timing diagrams, if any), and I tracked down an old rev of the 82S129
datasheet that includes some info on the Signetics Generic I algorithm. Those
three would be enough to get by on for now, but it would be nice to have read
and write support for e.g. the Intersil and Monolithic Memories chips.
As dictated by Sod's Law, I've got the Intersil linear databooks, but not the
logic/PROM/whatever databook. As far as MMI goes, I can't even find a copy of
the relevant databook for sale, hence why I asked for scans or photocopies
(I'm not fussy about which, and I'm willing to pay for the copying and
shipping/postage).
Thanks.
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