Well, new to me, anyway.
http://www.1000bit.it/
You're meant to read that in binary - in other words, it's about
eight-bit home micros, mainly.
An eBayer looking at my DEC tapes asked me if I had any fliers or
commercial literature for them, which sadly I don't.
--
Liam Proven * Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk * GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com * Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 * Cell: +44 7939-087884
Hello,
I'm looking for any technical reference material on the ICS11614 aka
Gravis GF1 chip on the original GUS series of sound cards. Specifically
I'm after pin map, AC and DC electrical characteristics (basically the
Datasheet) and a register level reference such as a programmers
technical reference manual. If anyone can point me in the right
direction, I would greatly appreciate it!
Thanks,
-Alan
WTS Data General AVIION 3600R, USED, qty 1, CALL, Data General AVIION 3600R
System Made in the USA.
I have this whole cabinet full of boards and hard drives. Anyone interested
let me know soon before it goes to La La land.
Jim Firlik
Techway Services
Phone: 855-832-4929 x201
Jim at techwayservices.com
NOT affiliated with seller. If someone wants this, give him a call or
email.
Cindy Croxton
Electronics Plus
Hey all --
Got myself a Zilog S8000 Model 31 in operable condition. It's a bit of
a mongrel (I'll get into that later) and of course the drives have been
wiped. I know this is a long shot, but does anyone happen to have any
media for this thing, in any format? There doesn't appear to be much out
on the 'net about this thing so I'm guessing that software is going to
be hard to come by, but I have to try, right?
I'm also looking for an ECC controller for this thing -- when I got it
it had several random (and possibly mutually incompatible) boards
installed in random slots. I have one 1mb ECC board (no controller),
one 1mb parity memory board (that I have no documentation for -- nothing
on Bitsavers matches this thing) and one 128K parity board that appears
to have been upgraded to 512K (4 rows of 18 64kbit DRAMs).
There's also an "I/O Processor" board (with its own Z8001 cpu) which I
have no information on.
I'll be dumping the EPROMs from this once I get my stuff unpacked from
my recent move, I can also take pictures of stuff if anyone's interested...
Thanks as always,
Josh
>For new designs, or rewiring old ones (dead-bug?), is there a generally
>agreed logical substitute for the 8640?
--- The DEC8640 is recognized as the National Semiconductor DS8640, long obsolete of course.
It is listed as being available here:
http://octopart.com/partsearch#!?q=ds8640
Most sources there quote by RFQ (which I have found does work) but one, Quest, has it for $15.
Steve Lafferty
The DEC PDP-11 Unibus Handbook identifies three standard ICs for use when
connecting to Unibus lines:
Bus Receiver - 8640 Quad NOR
Bus Transceiver - 8641 Quad
Bus Driver - 8861 Quad NAND
It seems to be generally agreed that the 8861 driver/transmitter can be
substituted by the 7439 Quad 2 Input NAND Buffer O.C.
There seems to be no recognized physical substitute for the 8640, at least
in part because it uses the 1 & 8 pins rather than 7 & 14 pins for GND/VCC,
respectively (see Figure 1-25). Is that correct? What have folks been doing
when needing to physically replace one of these -- substitute from a
sacrificial module?
For new designs, or rewiring old ones (dead-bug?), is there a generally
agreed logical substitute for the 8640?
Unibus Handbook Figure 1-30 does specify the RC-equivalent input for this
IC but I have not as yet tried to cross-walk it against well-known
SN74xx-series chips. I imagine that I'm the umpteenth person to encounter
this problem, so before I try to rediscover fire I'm hoping that someone
else could share their torch of knowledge :->?
-----
paul
I'll keep it short.
Stuff that might interested CCmp types...
TEAC 5.25" HD (1.2MB) floppy drive
http://www.ebay.co.uk/itm/271428687740
Set of 4 x 1600bp 9-track tapes: VAX software & others
http://www.ebay.co.uk/itm/271429544913
Set of 3 DEC Compactape TK50 cartridges in original packaging with blank labels
http://www.ebay.co.uk/itm/271429550658
Set of 7 3M Compactape TK50 cartridges in original packaging (used)
http://www.ebay.co.uk/itm/271429552762
N.B. I have 3 sets of 7 - if it sells, I'll be relisting the last item as-is.
Perfectly happy to split if you only want 1 or 2 items.
--
Liam Proven * Profile: http://lproven.livejournal.com/profile
Email: lproven at cix.co.uk * GMail/G+/Twitter/Flickr/Facebook: lproven
MSN: lproven at hotmail.com * Skype/AIM/Yahoo/LinkedIn: liamproven
Tel: +44 20-8685-0498 * Cell: +44 7939-087884
