Apple IIe - Page 275

The 80-Column Board 275
used during the power-up procedure .
Certain parts of this program should not be changed. These parts
begin with line number 10. This allows only line numbers 0
through 9 to be used safely for the user's modification of t he
program.
The BASIC statement,
1 PRINT CHR$(4);"PR#3"
when added to the HELLO program, will cause the 80-column
board to be activated at power-up. This statement accompl ishes
its task by
printing the DOS command PR#3.
In order to change the HELLO program , first unlock it , then load
it into the computer.
UNLOCK HELLO
LOAD HELLO
Add the following BASIC statement into the program by
entering it in response to the Applesoft prompt (]).
] 1 PRINT CHR$(4);"PR#3"
List
the program to verify that line 1 has indeed been entered
correctly . Finally, save and lock the new HELLO program .
SAVE HELLO
LOCK HELLO
Deactivating the 80-Column Board
When the 80 - column board is activated, output to anothe r
device is difficult. The disk drive presents no problems , but
attempting printer output may adversely effect the display.
In
order to output to a printer , the 80-column board must be
disabled. This
is the case even if the 80-column board is in its