Commodore PET User Manual page 289

This will push value 12 out of location 59468 and POKE value 14 in.
Charaeter sets may be ehanged in either ealeulator or program mode. 1
n
calculator mode the change is immediate, whereas a programmed conversion re-
quires the program statement to be run first. Whenever the eharaeter set is
ehanged. the whole sereen image is affeeted. For example, draw a graphie pic-
ture of a spiral on the screen, as shown below. In calculator mode. POKE value 14
into memory location 59468. The picture will instantly change to lower-case
alphabetics and graphies. Figure 5-11 illustrates this sequence.
a) Standard Character Set
b) Change Character Set c)
Alternate Character Set
.0.0.0.0.0.0.0 .0.0.0.0.0.0.0
q
"'q
';q wq wq wq wq w
•
•
q
.0.0.0.0.0.0
0
.0.0.0.0.0.0
0
qwqwqwqwqwqw w
0
• •
0
• •
w q
q
•
.0.0.0.0
0 0
• .0.0.0.0
0
0
q
qwqwqwqw w w
0
0.0.0.0.
• •
0
0.0.0.0.
• •
w wqwqwqwq q q
• •
0
0
• •
0 0
q q
w w
0
0.0.0.0.0.
•
0
0.0.0.0.0.
•
w wqwqwowqwq q
•
• •
•
q
q
.0.0.0.0.0.0.0 .0.0.0.0.0.0.0
qwqwqwqwqwqwqw
.
POKE 59468,14
<CR:>/ instant
change
Figure 5-11. Standard to Alternate Character Set
276