27 May
2014
27 May
'14
12:03 p.m.
On 05/27/2014 10:08 AM, Richard wrote:
It's a vector display, just without arbitrary
graphics.
A point of curiosity--who had the first *buffered* graphics display?
That is, where the display contents were continuously refreshed from a
memory buffer. In the old days, you pretty much had to continuously
redraw a display, unless you were using something like a storage tube.
The more complex the display, the more flicker involved.
In particular, I recall that the DD60 on a 6000 could flicker something
awful if it was trying to produce a display from CM and ECS transfers
were going on--the PP simply couldn't get sufficient access to CM to
regenerate a display in a timely manner. A similar thing would happen
if a display was overly complex.
--Chuck