13 Feb
2007
13 Feb
'07
1:56 p.m.
On Feb 13, 2007, at 2:31 PM, Philip Pemberton wrote:
Huh? The 28/29 family is far from huge...about the size of three
average phone books stacked atop one another. I strongly advocate
building one, though, because it's cool, and a valuable experience.
Far too many people nowadays would rather sit on their asses, drink
watery beer, and watch other people play a game than actually CREATE
something. I applaud your efforts.
But I still say the Data I/O 29B is a very small box. =)
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).
I *might* have an MMI databook; I will do some digging.
-Dave
--
Dave McGuire
Port Charlotte, FL