help - 11/34 console problem -- CNTRL key behaviour

[Allison]

>
>Subject: RE: help - 11/34 console problem -- CNTRL key behaviour
>   From: "Gooijen, Henk" <henk.gooijen at oce.com>
>   Date: Thu, 10 Nov 2005 14:44:52 +0100
>     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>Allison wrote: 
>
>> Well it does not have to be a clock.  It happend the product 
>> I was working on was a time code display for video tape where 
>> the display could be time or number of frames.
>> 
>> Besides the display system for PDP-11 is likely OCTAL. ;)
>
>True, but the latch that outputs the 3 bits for the 7447 has
>a fourth output which could be used! Take that 4th output to
>the 7447 'D' input (which is now connected to GND) and you
>can display an "8" or a "9".  But I am drifting off-topic --
>the console must work for starters :-)
>
>- Henk, PA8PDP.

The whole point of the clock thing is simple code to make a 
repeated operation that traces esily with scope or logic 
analyser. 


Allison