Updates on various projects
John Macdonald
jmm at eci386.uucp
Fri Jan 25 03:12:51 AEST 1991
In article <38353 at cup.portal.com> thad at cup.portal.com (Thad P Floryan) writes:
|Update on monitor project:
|
|the paper-white monitor WORKS! No more ugly green. [...]
Neat.
| [...] Still
|have some experimenting since the "intensity" signal isn't connected to
|anything. [...]
Great - let's do grey scale... (10 second pause) oh well, that's
not a simple project is it - anybody got a month or two to spare?
Perhaps a software controllable screen dimmer and intensity control?
Actually, when I think about it, grey scale might be possible. My
initial objection was that we'd have to provide 2 (or 4) times the
screen memory and then modify the display circuitry to scan it all
that much faster and run it through a digital to analogue and use
that to drive the intensity. However, it could be done using the
current memory interface, by using 2 or 4 adjacent screen bits at
a time, and then making them all have the same corresponding grey
scale intensity. (This would divide the verticle resolution down
by a corresponding factor - anyone for a 25 line by 40 (or 20)
column display with nice grey scale? - maybe not.)
Oh well, it still looks like too much work for anything that would
be useful, unless my ramblings trigger the thoughts of someone who
has a better feel for mucking around in the hardware.
--
Cure the common code... | John Macdonald
...Ban Basic - Christine Linge | jmm at eci386
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