Nicolet DSO & analog comps / was Re: Getting to disliketantalum caps

[Brent Hilpert]

dwight elvey wrote:
> > From: hilpert at cs.ubc.ca
> > IIRC from when I was working on it, the 1090 is 8080-based. JOOI, have you
> > determined what microproc the 2090 uses?
> 
>  It uses one TMS9900 for the disk drive and another TMS9900 for the
> I/O ( GPIB or serial depending on an option module ). 
>  The mainframe use 3 2901 bit slice.

Sounds neat, something a little more interesting than a Z80 or some such; I'm
going to have to open up the one at the museum just to see.


> > > I originally got it so that I could display things from
> > > my analog computer ( That I'm having fun with ).
> > > I powered it up and was just getting the parameters
> > > right for a nice Rose Engine display when the display
> > > went to a defocused dot.
> >
> > I'm also interested in hearing about analog computer work, would like to go back
> > to working on programs for mine sometime:
> > http://www.cs.ubc.ca/~hilpert/e/tyrotek/index.html
> 
>  There always fun to play with. I like the Rose Engine work but I'm just 
> begining to get the hang of it. Making an oscillator that doesn't dampen out
> or clip is the first trick. Adding and multiplying are then used to combine
> them into interesting things.
>  Others like to use them for music synthasis or simulations of physical
> problems. I just like the pictures they make.

I can hope for as much, I currently don't have any graphical display for the
analog computer. I have to either rejuvenate an old graph recorder for the
display (would be 'period consistent'), do as you are doing and get one of
these Nicolet DSO's going, or build a repeat-cycling unit for the computer so
the display can be refreshed onto an ordinary oscilloscope.