Filter
Top Products
RR
Delta User’s Manual
computers to use Delta’s block graphics characters and special
symbols if Star’s engineers hadn’t thought of a solution. (All of
these characters have ASCII codes greater than 127 which means
that the eighth bit must be on to use them.) The solution lies in the
three control codes given in the following table.
Table 6-4
Eighth bit controls
Function Control code
Turn the eighth bit ON
(ESC) “>”
Turn the eighth bit OFF (ESC) “=‘I
-.
Accept the ei
hth bit
“as is” from t
a e computer
(ESC) “#I’
Block graphics characters and special symbols
Besides the upper and lower case letters and symbols that we
are by now familiar with, Delta has a whole different set of charac-
ters that are for special uses. These characters include block
graphics characters for drawing forms and graphs, and special
symbols for mathematical, engineering and professional uses.
The following program will print out all of the graphics characters
available.
NEW
10 FOR J = 160 TO
255 STEP 8
20 FOR I = J TO J
+ 7
-.
Figure 6-l.