16 Jun
2004
16 Jun
'04
4:29 p.m.
> I also have stuff that may never see
implementation (like my TC08
replica),
> and an EAGLE library of DEC Gxxx and Mxxx modules
(both as components
for
projects like
the TC08 replica and as individual boards you could have
produced).
Never say never... now a generic Mxxx board with, say, 4 16-pin sockets
and a double row of 32 pads might be handy - one set mapped to the
sockets,
the other set mapped to the fingers - drop in the
necessary chips and wire
up the pads... that would be nice to have for certain projects (like
adding
an EAE or memory extension hardware). It would, in
fact, resemble a
paddle
card for a 40-pin cable like we've been talking
about, but with 4 sockets
above where the cable connector would go (and an extra row of vias not
attached to the fingers).
That is easy, and not a bad idea.
Between PDP-8/Ls, a PDP-8/i, an RK11C, and a few odds
and ends, I'm not
exactly hurting for M-series cards, but there are a few that I don't have
abundant spares of - I do at least have a pile of boards that have
verified
bad chips (mostly 7474s and 7440s). Still, I
wouldn't mind being able to
whip out a module for which I _don't_ have a sample of. I only have two
blank proto modules.
I currently have drawings (schematic and board) for the G821, G879, G888,
H807, M101, M103, M111, M113, M115, M117, M119, M121, M161, M206, M207,
M228, M302, M307, M401, M502, M602, M623, M627, M633, M903, M916, W005,
W023, and W032. These, and the TC08, are "replicas", by which I mean that
they follow the DEC schematics, layout, etc. There are few other Mxxx/Wxxx
paddle cards, and of course the M452x and W076x as well, that aren't
replicas of DEC parts (which I call "replacements" instead).
I think it would be useful to have a pointer page similar to what Sellam is
proposing, but that included this kind of stuff. Although it isn't stuff
you can buy (yet, or maybe ever), it is still useful to prevent duplication
of effort and provide resources for people interested in doing this kind of
work.
(I could do that myself, but I don't find maintaining websites to be fun
:-).)
Vince