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6-30 Chapter 6: Programming
Model 801GC, 801GF & 801GX¥Rev. A
The V-Grill primitive draws equally spaced vertical
lines that form a grill over the entire active video
area. The gap between the lines is equal to the thick-
ness of the lines. The gaps are not touched and will
show any previously drawn primitives. The primi-
tive uses two (2) parameters. The first is the color of
the lines. The second is the thickness of the lines.
The following example draws a cyan vertical grill
whose lines are 16 pixels thick and have 16 pixel
gaps between the lines:
V-Grill Cyan 16
The Characters primitive fills the active video area
with a single repeating character. The spacing be-
tween the characters is controlled by the size of the
two dimensional pixel array that is used to define
the character. The size of the pixel array is deter-
mined by the character and font selected.
#0 sys16 IBM-type alphanumeric font that has printable
characters for ASCII codes 0-126. It uses an 8 x 16
monospaced character block.
#1 OPIX 9 Alphanumeric font that has printable characters for
ASCII codes 32-126. It uses a 5 x 7 monospaced
character block.
#2 focusmac Single character used in the Focus_Oo test image;
ASCII code = 79; 8 x 6 character block
#3 focus_12 Two characters used for the Focus_Cx and Focus_H
test images; ASCII codes = 67 and 72; 8 x 6 character
blocks
#4 memesony Single character used for various MEME images; ASCII
code = 77; 18 x 18 character block
#5 kanjikan Single Japanese KanjiKan character used in the
KanjiKan image; ASCII = 75; 22 x 22 character block
#6 focusat 5 A single @ character used in the LinFocus image; ASCII
= 64; 8 x 16 character block
#7 focusat 6 A single @ character used in the Focus@6 image; ASCII
= 64; 16 x 16 character block
#8 focusat 7 A single @ character used in the Focus@7 image; ASCII
= 64; 16 x 16 character block
#9 focusat 8 A single @ character used in the Focus@8 image; ASCII
= 64; 16 x 16 character block
#10 memeplus A meme plus character used in focus and
convergence; ASCII = 77; 43 x 49 character in a 49
x 51 block
Table 4-4
Available font sets
for the Characters
and Text primitives