30 Dec
2008
30 Dec
'08
3:14 p.m.
Oliver Lehmann wrote:
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).
63S240 is an open-collector 512x4 PROM, and slightly faster (33ns) than the
6306 (50ns). For reading back it should work fine, but if you want to copy the
data onto a new chip, you absolutely need a chip the programmer supports.
With EPROMs you can (sometimes) use the Intel Quick-pulse or 10ms Pulse
algorithms if you don't know the manufacturer's specific algorithm, but with
PROMs getting the algorithm wrong can, and WILL fry the chip. That said, with
EPROMs it's hard to find something that isn't supported by modern programmers.
I've got an Elnec Preprom-02aLV (only recently EOL'd and still under software
support) and it's handled everything I've plugged in, with the obvious
exception of a few dead EPROMs that have probably spent a little too long in
the UV box...
That said, Widlarization is a great way to deal with parts like that. :)
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/