Apple II - Page 155

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Imporlonl
Activating and deactivating the card
This .section tells how to aCllVate the: cud, switch the display
be' .... 'Cen 40 and SO columns, and de",aiv;ltc it again
-:. Note: If you arc writing programs in Pascal or running under
the CP/M opcnuing system, 80 columns of tCll:1 are.
:lutomll.tic:ally dispLayed after you mSl211 the texl card sec
·Pascal Screen Control Codes" for details.
To activate the card;
I Turn on your video monitor and sun up the Apple lie with
the DOS 3.3 System Master disk or me ProooS User's DiSk If
you don't have a disk drive, rum the computer on and press
Control·Reset.
2. Ir you started with ProDOS, select the BASIC oplion. Once
you're in the BASIC programming environment, you'll sec the
square bracket prompt ()) and the blinking checkerboard cursor
on the screen. (The blinking checkerboard cursor tells you the
text
card is inactive and the computer is in 40-column display
mode.)
3 If you slancd from lhe DOS 3-3 System Master. press caps Lock
to Swilch to uppercase letters (If you Iype lowercase charaaers,
you'll get a SYNTAX ERROR message.)
4
Type PRf) and press Rclum The: cursor changes to a non-
blinking reaangular cursor, iodioting that the ord is active
and the computer is in 8O-column display mode.
To deaetiv.ue the cud
I Press Esc and release it.
2 Press Conuol~Q.
11le blinking checkerboard cursor reappears with a backslash (\)
JUSt above the cursor.
To reactivate the text card, type Pllt).
When typing on escape sequence. don't press both keys at the
same time. as you do when Issuing control key commands.
You can aaivalc and deactivate the ord and switch the display al
any time without wiping OUt the BASIC progn.m in memory.
Acttvothg and deocflvol'ing!he CCIl'd 137