2 Jul
2011
2 Jul
'11
10:02 a.m.
On 01/07/2011 21:00, Tony Duell wrote:
There is a serial multipexer for the Unibus -- and I think it's an
Emulex product where the (hex height) Unibus board contains a fair amount
of bit-slice stuff. This links by a ribbon cable to a distrbution unit
(3U high, and quite challow). You cna daisy-chain several of these, you
put a terminator board in the 'out' connector of the last one.
The distrubtion units have a PSU bolted on the back, and a PCB inside
containign the UART chips. There are 2 distritution panels that fit
side-by-side into the distribution unit and connect to pins on the UART
pCB. Thiese distribution panels contain the drivers and connector. All
mine are RS232 ones, I assume there were others, perhaps current loop or
RS422. Each disptribution panel has 8 ports IIRC, so each distribution
unit gicves you 16 serial lines.
Anyone got any ideas what I am thinking of?
Is the CS11 the onw where there's a Unibus
board full of 2900 bit slice
chips liked to distribution panels which contain the UARTs are well as
the line driever/receiver ICs? I have one of those in my 11/44.
No, the UARTs are on the main board, but IIRC the drivers are on the panels. As an aside, I
have JNT-PAD and its unser manual soewhere. Odd device,
it appears you can save the configuration on an audio cassette recorder...
I have one too. Before I started in my present job, UoY had quite a lot
of thick yellow etherhose around the place[1], and Camtec pads stuck in