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From: mch@ukc.ac.uk (Martin Howe)
Newsgroups: comp.terminals
Subject: TEK 4014 -- VERY URGENT HELP needed
Keywords: 4010 storage tube scope plot graph vector emulat vt ucds
Message-ID: <756@harrier.ukc.ac.uk>
Date: 26 Apr 89 09:15:50 GMT
Reply-To: mch@ukc.ac.uk (Martin Howe)
Organization: Lan/Micro Group, Comp. Lab, Univ. of Kent, CANTERBURY, UK
Lines: 48

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)