Graphics Text - HP 262SA Reference Manual

Graphics
Examp 1e:
Define graphics memory as source and both printers as desination.
Ec "
75
4d 6D
After the source and destination are defined, the transfer is initiated by either:
Ec "
P F
Ec "
P
N
(copy file from source to destination)
or
(copy all from source to destination)
Note that an escape sequence is terminated with an uppercase character. Also, you may
combine the source and destination assignments and the transfer initiation in one escape
sequence:
Ec "
75
4d F
NOTE: The escape sequence (
E c
&
P 5 d )
assigns the alternate printer as the destination for
graphics data transfer. It also gives the host system control of the setting until the terminal
receives the sequence EC & p 3 D from the host computer or a HARD RESET from the
keyboard or host. You should code the sequence EC & p 3 D after graphics transfer is com-
plete. This prevents the display of an I/O error message on the terminal screen when the
keyboard operator tries to select \TO ALT PRT\ on the terminal configuration menu.
GRAPHICS TEXT
Text strings can be written directly into the graphics image memory. An internal character
generator converts the ASCII codes into a dot matrix representation which is drawn as vectors.
The character set includes upper and lower case (95 characters) and the national characters
shown in Appendix B. The characters will be drawn as a 5 by 7 matrix in a 7 by 10 cell, with
descenders for lower case. This character set is in addition to the normal alphanumeric
character set. While this character set may seem redundant, it offers the following advantages:
• Characters can be drawn at any dot position, rather than 24 by 80 alphanumeric character
positions.
• Characters can be rotated in multiples of 90 degrees.
• Characters can be scaled in size, from
1
to 8 times.
• Characters can be slanted 45 degrees for an italics-like effect.
• Lines of characters can be right, left, or center justified.
Figure D-15 shows the graphics character set.
D-38