Table of Contents
Advertisement
Graphics
4014 Emulation
In 4014 Mode the terminal emulates the functions of a Tektronix 4014 terminal equipped with
the Enhanced Graphics Module option. 4014 Mode adds the following features to the terminal.
Refer to the manual for the Tektronix 4014 for additional information on 4014 operations.
SCALED 4014 MODE (SCL 4014). In 4014 mode the screen resolution is extended to 4096 by
4096 addressable points (4096 X 3120 displayable). Two binary bits of precision are added to
the address space. Points are addressed as 0.25, 0.5, 0.75, 1.0, etc. The two binary bits are
specified by an ((extra byte," allowing 4010 graphics, which use only the integer addresses of
the 4014, to appear full-sized on'the 4014-mode display. The address space is divided by 8 to fit
the entire picture on the 512 by 390' screen. Graphics drawn in this mode have the same
appearance on the screen as graphics drawn in scaled mode.
Patterned Vectors. Whereas the 4010 draws only solid vectors, the 4014 has five line
types--solid, dotted, short-dash, long-dash, and dot-dash. Escape sequences for these line types
are accepted in SCL 4014 mode. These sequences retain their HP functional definitions in
SCALED (4010) mode. The following commands select the line type for vector drawing:
Ec
I
for normal vectors or alphanumeric data
Ec
a
for dotted line vectors
Ec
b
for dot-dashed vectors
Ec c
for short-dashed vectors
Ec
d
for long-dashed vectors
ThesequencesEc <h through !>andEc <p through t>canalsobeusedtoselectlinetypes.
The terminal accepts the line type specified by the sequence but ignores the 4014 line-width
definition (defocused and write-thru vectors are not supported on the HP terminal.)
Variable Character Sizes. The terminal ignores 4014 commands for changing character size.
Thus the sequences Ec
8,
Ec
9,
Ec : and Ec ; are not executed in 4014 Mode (these commands
retain their HP meanings in scaled mode.)
UNSCALED 4014 (UNS 4014). The same vector-drawing capabilities available in Scaled 4014
mode apply in this mode, but no scaling is performed. The 512 by 390 screen displays a window
on the 4096 by 3120 surface (the window is 1/64 the total image). As in unscaled mode, the
relocatable origin is used to specify the window's lower left corner. Alphanumeric characters
are directed to alpha memory, as they are in unscaled mode.
INCREMENTAL POINT PLOT. Sending the terminal an RS control character sets in-
cremental point plot operation. Commands for pen up (SP)(i.e., an ASCII ((SPACE") or pen
down (P) control vector drawing in this mode. The terminal draws a single dot as the graphics
beam moves in one-point increments according to the following directional commands:
D -
North; E - Northeast; A - East; I - Southeast; H -South; J - Southwest; B - West; F - Northwest.
POINT PLOT. An FS control code selects point plot mode operation. As HP 4010 line type 11,
only the last point of a vector is drawn.
SPECIAL POINT PLOT MODE. The terminal displays vectors drawn in this mode, but does
not vary the intensity of the graphics beam.
D-52
Advertisement
Table of Contents
