30 Jun
2006
30 Jun
'06
10:24 a.m.
On 6/30/2006 at 1:06 PM Jules Richardson wrote:
Some time ago, someone on this list posted a URL for a
site where someone
had homebrewed something to that effect and were using a 'scope as the XY
display;
it was all hooked up to a computer so that they could draw images, write
words etc. on the 'scope's display.
I recall something in one of the 70's electronics/computer mags about this.
Probably something like Kilobaud or Microsystems.
There's also a fairly ancient (1960s) paper on the subject on the web
about drawing characters using LRC circuits. Which is the way the old CDC
6000 operator's consoles did it. Maximum text density in small characters
was 64 colums by 64 rows (3 character sizes were possible). You could
create special effects like intensify or blink by simply redisplaying or
skipping a display cycle. No buffering at all--the more time you took to
get through a display, the more flicker it had. The fewer charactrers on
the screen, the brighter they were. Graphics mode, IIRC was 512x512,
again, unbuffered.
Cheers,
Chuck