30 Dec
2008
30 Dec
'08
1:30 p.m.
Philip Pemberton wrote:
Like this: http://www.elnec.com/ic_logos/mmi.gif ?
Yeah, it is MMI.
Your best bet out of those is probably the 82S131,
which you might be able to
find NOS somewhere. You'll still need a programmer, though. You can build one
for the Signetics chips fairly easily (the algorithms are called "Generic I"
and "Generic II"), but good luck finding a programmer for the MMI chips.
I've
been meaning to build a "generic" fuse-PROM programmer (I've got a couple
of
82S chips in a box somewhere) but could never find the MMI programming specs.
I've an ALL-02 (http://matthieu.benoit.free.fr/145.htm) which might be
from the same decade as this PROM ;)
For BPROMs
it support chips from the manufactures AMD, NS, SIG, TI and
MMI - but the 6306 is not listed for MMI (the 512x4 Type listed for MMI
is 63S240).
But right now I just care about backing up all EPROMs and PROMs from this
system here just in case something happens... (and the 6306's are now
backed up as well :-)
--
Oliver Lehmann
http://www.pofo.de/
http://wishlist.ans-netz.de/