14 Feb
2010
14 Feb
'10
8:14 p.m.
dwight elvey wrote:
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.
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.
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. 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