9 Feb
2007
9 Feb
'07
9:24 a.m.
Rick Bensene wrote:
The coolest Tektronix terminal, if you ask me, was the
original Tek
4002.
...
There also was a 'write through' mode,
again, not sure if it was a hack, or part of the production terminals,
that would (within the limitations of the RS-232 port) could do simple
dynamic (non-stored) vector graphics.
Don't know about the 4002, but I'm pretty sure it was standard
on the 4014. We had one in college and I wrote a little thing
that drew a wireframe pyramid in writethrough mode. You gave
it a file of x, y, z rotations and it drew the animated pyramid. We
were running it on a VAX 11/780 running VMS. Of course, when
someone else got the CPU, the screen blanked. (If you didn't
rewrite the lines fast enough, they went away.) So this friend
of mine who was employed by the computing center (as was I)
as an operator got this "brilliant" idea. We had privileges to create
queues. So he created one with real-time priority so that it wouldn't
blank out. It worked in that the animation was quite smooth. But
from the perspective of everyone else on the system, it
had
locked solid. We did finally get logged in and killed the queue,
but as I recall it took about 30 to 45 minutes.
BLS
9 Feb
9 Feb
9:55 a.m.
In article <20070209172403.IJIL8793.ibm67aec.bellsouth.net at mail.bellsouth.net>,
"Brian L. Stuart" <blstuart at bellsouth.net> writes:
Rick Bensene wrote:
It is also on the 4010. The 4010 and the 4014 have a card cage into
which you can insert your own cards. I've had the idea to create a PC
system by putting an entire PC on to the plugin card and using the
terminal as the display. There's easily room to mount a hard drive
inside the cabinet :-). At the very least it would be interesting to
add a USB port to the Tektronix this way to give it a higher serial
transfer rate. The number and complexity of the dynamic vectors that
you can draw is currently limited by the baud rate on the port, but I
assume that if you get a faster communications channel, then there's
probably a limit based on how fast they can slew the electron beam.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
The coolest Tektronix terminal, if you ask me,
was the original Tek
4002.
...
There also was a 'write through' mode,
again, not sure if it was a hack, or part of the production terminals,
that would (within the limitations of the RS-232 port) could do simple
dynamic (non-stored) vector graphics.
Don't know about the 4002, but I'm pretty sure it was standard
on the 4014. [...]
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