Character Font Selection - Zenith Z-100 Reference Manual

Table 7.15 further defines the manner in which character font selection is deter-
mined.
Table 7.15. Character Font Selection
4
J305 J302
1 0 0
1 0 0
1 0 1
1 0 1
1 1 0
1 1 0
1 1 1
1 1 1
0 1 0
0 1 0
0 1 1
0 1 1
0 0 0
0 0 0
0 0 1
0 0 1
Result of ANDing mode-select port 3DA bit 2 and AT6 (attribute bit 6,
red background)
MODE SELECT STATUS PORT
PORT3DA
B IT 1 B I T 5
0
1
0
1
0
1
0
1
0
0
Video Graphics Programming
3DA
BIT 6
FONT
Power-up double-dot
Single-dot
Underlined double-dot
Underlined single-dot
Power-up single-dot
Double-dot
Underlined single-dot
Underlined double-dot
Power-up underlined
single-dot
Underlined double-dot
Single-dot
Double-dot
Power-up underlined
double-dot
Underlined single-dot
Double-dot
Single-dot
page 7.31