mch@ukc.ac.uk (Martin Howe) (04/26/89)
Greetings. I am writing a TEK 4010 emulation with a few 4014 extensions, that is
to be built into a VT100 emulator. We do actually have a REAL TEK4014, but NOONE
in the university has any TEK 4014 or 4010 MANUALS ! If anyone out there could
supply, or knows where I could get ** detailed ** TEK 4010 and 4014 information
(other than from Tektronix themselves of course :-), I'd much appreciate it. A
termcap entry for a 'pure' 4010 would also be very helpful.
IMPORTANT
=========
The main reason for posting, however, is that I very urgently need to know just
=============
what "incremental plotting mode" on a 4014 is and how it is turned off. At the
moment, I turn it on after an RS, build up a vector coordinate until I get a
LOW X character then ADD the respective results as UNSIGNED 10 bit numbers
to the last vector, ie.,
foreach new VECTOR
tempx = currentx (as 10 bit number)
tempy = currenty (as 10 bit number)
currentx = 0
currenty = 0
repeat /* standard 4010 behaviour */
read char
build up currentx & currenty as normal
until last char had a LOW X tag
currentx = unsigned add (currentx+tempx) mod 1024
currenty = unsigned add (currenty+tempy) mod 1024
vector (currentx, currenty)
end foreach
Then there are the problems of
(1) What style (line[gs] or point[fs]) is used when rs is received ?
(2) What happens if a coordinate is off screen ?
(3) How do you turn OFF incr. plotting mode ?
This is very important since we have lots of BBC micros and the
UNowhat `PLOT (1)' command expects incremental plotting mode to exist.
We are experimenting with our 4014, but this is consumeing exp. time of course !
If anyone can help plese e-mail or post as soon as possible.
Thanks (to anyone) in advance,
--
Martin Howe (Official posting)