I didn't pick this one up yesterday as I didn't know what chance I stood
of being able to find a home for it.
However, I'll be going back to the site next week I think to rescue some
of the software that was there, and chances are good the printer will
still be there.
If someone wants it and can pick it up from me I'll make sure I grab it.
cheers,
Jules
I'm starting to make progress in going through the carload of stuff I
rescued earlier. For starters:
One of the things I found in the heap was a SWTPC CPU board. I know
nothing about them, but it looked interesting enough to be worth saving
>from an unknown fate.
However, the board's different to the one at:
http://www.computercloset.org/SWTPC6800.htm
This one has 5 larger IC sockets along the top edge, the leftmost of
which is populated. there are two 7805 regulators toward the centre of
the board at the bottom.
Bus is 50 pins, just like the card in the above photo - SW-50 I guess.
There was no sign of a case for the board, backplane, or any other cards
though.
Anyone know what the different board variations are? This one says
"MP-A2" in the top right corner along with a copyright symbol.
Build date looks to be mid-to-late 1977.
On the back, written in pencil, is "MRC original board" (which probably
doesn't mean anything to anyone!)
cheers
Jules
I was just given an A1000 with keyboard, mouse, and the external floppy
(the external floppy seems to have "issues". This is my second A1000, but
the first one is dead and was used for my public displays to show the
signatures on the inside of the case.
I haven't had time to plug it in and see if it boots, but I do know I'll be
needing a Kickstart disk. I have the version of Workbench that came with
my A500 (1.2, I think?) -- will that boot the 1000?
Nice little bonus -- it also came with the genlock slab, so I'll eventually try to
play with that.
Also, anyone have a copy of the bouncing ball demo I can have? I've never
had that, and always wanted a copy, especially since I interviewed RJ Mical
several years back and talked to him about it (he's the one who wrote it.)
While I'm in the process of purging most of my collection (those of you who
have emailed me -- I haven't forgotten you. Life just got nutty for a while
and I got behind on a lot of projects.) I'm keeping my 128K Mac and all my
Amigas (2 - 500's, A1000, and an A2000).
Thanks.
Paul Braun
Cygnus Productions
nerdware(a)ctgonline.org
"Enjoy every sandwich." -- Warren Zevon
"At Microsoft, Quality is Job, oh, I dunno, maybe 7 or 8?"
I'm playing with KLH-10 right now, and would like to run some GIGI-aware
apps that are in the tops20:<games> dir. Does anyone have any recommendations
for a GIGI-emulator app under Linux?
-ethan
--
Ethan Dicks, A-130-S Current South Pole Weather at 02-Jul-2004 03:50 Z
South Pole Station
PSC 468 Box 400 Temp -95.5 F (-70.9 C) Windchill -135.3 F (-93 C)
APO AP 96598 Wind 9.1 kts Grid 084 Barometer 672 mb (10929. ft)
Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html
I need a datasheet for a 5204 EPROM (I'll settle for a pinout if no one has
a complete data sheet).
This is 512 bytes x 8, it's essentially half of a 2708.
Now for a big question, does anyone know if it can be programmed in a
Cromemco Bytesaver II ??? The Bytesaver II board was for 2708's; the early
documentation for the original Bytesaver (not the "II") suggested that the
original Bytesaver could program 2704's also (same size as a 5204), but
never went into a discussion of how to do it (the sockets assume 1k 2708's),
and those references are dropped from the Bytesaver II manual.
Thanks.
philpem(a)dsl.pipex.com stated:
>Drat. Apparently the cabling for the data lines is
>nichrome. Whether
>that's
>for mechanical, reliability or electrical reasons I
>have no idea.
>Later.
The only reason I can think of for nichrome is that
there would be a uniform resistance in the wire
(likely) or (unlikely) nichrome is a poor (for a
metal) conductor of heat.
My Tek 1230 is definitely plain old IDC, and that
model is worth up to and including nothing without the
probes. Probes are $400+ (without the grabbers!). I
have 3 and have turned down an offer for $300 for one
of them.
I spoke with a surplus test equipment supplier and he
told me that these are almost always lost when they go
up for auction, especially military. Off lease, they
just bill the customer and dump them surplus anyway.
I actually looked into building a probe - no
schematics, no info from TEK, custom and proprietary
IC's, and I suspect absolute analog comparator voodoo
designed for clean and fast risetimes.
Bottom line: you need to get your dough back. Accept
no less.
=====
-Steve Loboyko
Incredible wisdom actually found in a commerical fortune cookie:
"When small men cast long shadows, then it is very late in the day."
Website: http://juliepalooza.8m.com/sl
__________________________________
Do you Yahoo!?
Yahoo! Mail Address AutoComplete - You start. We finish.
http://promotions.yahoo.com/new_mail
Next oddball find:
A board (about the size of a full-length ISA card) labelled as:
"A2000 Prototype Card V1.1",
"Interface Megavision / Megalink",
"c+p 1988 by SANG Computersysteme GmbH"
Bus is 100 pins (50 each side of the board). There's a handful of buffer
and PAL chips right by the bus connector, but otherwise it's a blank
prototype card. There's a ten pin IDC board-mounted socket in the
bottom-right corner.
Any ideas what / where / why / when? :-)
cheers,
Jules
>From: "Barry Watzman" <Watzman(a)neo.rr.com>
>
>I need a datasheet for a 5204 EPROM (I'll settle for a pinout if no one has
>a complete data sheet).
>
>This is 512 bytes x 8, it's essentially half of a 2708.
>
>Now for a big question, does anyone know if it can be programmed in a
>Cromemco Bytesaver II ??? The Bytesaver II board was for 2708's; the early
>documentation for the original Bytesaver (not the "II") suggested that the
>original Bytesaver could program 2704's also (same size as a 5204), but
>never went into a discussion of how to do it (the sockets assume 1k 2708's),
>and those references are dropped from the Bytesaver II manual.
>
>Thanks.
Hi
I'm not at all sure about programming the 5204 or if it even
is pin compatible with the 2708. The 2704 is program and
pin compatible with the 2708. You just program 1/2 the
address space. The algorithm is the same for both the
2708 and the 2704, otherwise.
Dwight
vaxstation newbie question:
How hard is it to find vaxstation 3100 memory?
I'm finding the 4mb on-board memory is a little, eh - small - for my
needs. Seems like there are 4 "tower headers" on the motherboard which
will allow me to add some more...
Is that memory hard to find? Anyone have any lying around?
-brad
