PDP 11/40 Unibus termination query...

Tony Duell ard at p850ug1.demon.co.uk
Thu May 21 13:35:07 CDT 2009

> > I think they are great, but I understand why we went with cheaper ones
> > (no silk-screen, for example).  I still wish we'd added some jumper
> > pads to allow us to flip them from Unibus to Qbus grant cards, but

IIRC the FPF11 (floating point board for the 11/23 and 11/24) has that 

> > when that last order was being placed, the production guys just
> > ordered more of what we'd been ordering rather than incur the expense
> > of a change.
>    That would've been really nice.

Some years ago I was given a box of mostly home-made grant cards. The 
home-made ones turned out toe be dual-height prototyping boards with links 
soldered between the pins. You can guess what I did with those :-)


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