I am trying to work out why my PDP 11/24 CPU is not working. To do so I want
to use my logic analyser on the F-11 chips. I have a regular 40-pin test
clip, but it doesn't make a good contact with the pins on the F-11 chips.
The test clips I have are made for regular DIP chips where the legs come out
horizontally from the side of the chip before turning 90 degrees and going
down into the board. On the F-11 chips the pins are pretty much stuck to the
side of the chip body and so the clip can't make a good contact.
Does anyone have any tips for attaching a test clip to the F-11 chips?
Thanks
Rob
Why anybody would bid more than three hundred dollars for a bunch of ribbon
cables?
https://www.ebay.com/itm/234623364778?hash=item36a0a46eaa:g:y1oAAOSwwQdiz550
Unless there's something I'm not seeing here, I can easily (and exactly)
reproduce them.
I could even make them with red or "rainbow" cables if you prefer. I'll do
a set for the
"bargain" price of $250.
Bill S.
--
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Wow great! Location???
Sent from the all new AOL app for Android
On Mon, Jul 18, 2022 at 11:21 AM, Robert Ollerton<rollerton(a)gmail.com> wrote: I've got a H89 I could cut loose
On Sun, Jul 17, 2022 at 4:40 PM ED SHARPE via cctalk <cctalk(a)classiccmp.org> wrote:
Heath h-100 h-200 computer added to SMECC with discs books etc anyone else running one like this? Ours is version with built in keyboard builtin dual floppies 8085 plus 8888 and monitor is separate unit sitting on top...Ed# P.S. We never got the H89 that was headed our way.... some guy absconded with it I guess... alas.... so once we get that think we have THE SET except for the analog computers that Heath Produced ( still looking??? Help???)
I followed the suggestion in a previous message to logon to the new server and set my desired list settings. Now I show up with two subscriptions for my email address, one as "nonmember" and the new one as "member". It does not appear that I am receiving doubles delivery of messages, so I'm not sure if this is an issue or not.
I don’t know what’s changed but I’m receiving the cctech digests as a collection of mime attachments now. I’m using an iPad and used to just get a lengthy plain email. The mime attachments are a real PITA to try to read!
Can anything be done?
Thanks, Bob
Hello Classic fans,
Recently eBay seller smhelectronics261 posted a very interesting
prototype board: https://www.ebay.com/itm/295087630609
The description is "Dec Digital PRO 350/380 Professional Microvax II
Proto 54-16707 Collectors", and the board art mentions "MICROVAX SOFTCARD."
Does anyone know anything about this card? Especially curious is the
daughtercard connector: is it just for RAM expansion or is the
daughtercard necessary for card operation?
The photographs are fuzzy, but the more recent chip date I can see is
8536 (on one of the QFPs). This puts the board in the time period of
the MicroVAX II development.
The internal "MicroVAX Business Plan"
(http://bitsavers.org/pdf/dec/vax/610/memos/Microvax_Business_Plan_Dec83.pdf)
mentions a "Meteor" project (p. 11). It describes Meteor as:
Meteor is Digital's first single-user MicroVAX product. Developed
within Low End Engineering, the product is positioned as a strong
competitor in the low end, technical/scientific and the high end
office/business graphics workstation market. Meteor should be an
effective follow-on product to the Professional Series and high end
VAX/Seahorse workstations. Although not a replacement product per
se, Meteor represents a clear migration path for PRO users upward in
functionality, and for VAX Workstation applications downward to a
lower cost, single user design.
Does anyone know if this board is Meteor?
I'll be bidding on the board, but given how pricey CTI boards have
gotten recently (a DECNA card from the same seller recently sold for
$422.99), I probably won't win. If the winner of the auction reads
this, could they please contact me? I'd like to collect an image of the
boot ROM from the board, if possible.
Thanks.
--Bjoren
