WTD: Fuse PROM programming algorithms
mcguire at neurotica.com
Tue Feb 13 15:56:15 CST 2007
On Feb 13, 2007, at 2:31 PM, Philip Pemberton 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
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. =)
> 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.
Port Charlotte, FL
More information about the cctalk