Commodore Plus 4 - Page 101

To switch from normal graphics (also called Text Mode) to high-res,
just type the command GRAPHIC 2,1 and hit RETURN . What hap
pens? The screen goes blank and the cursor reappears near the bot
tom of the screen. The Plus/4 divided up the screen into 2 separate
sections the top for g'aphics and the bottom five lines for text- If you
don't want the bottom five lines for text, you can use the command
GRAPHIC 1.1, but you won't be able to see any commands you type.
You can switch back and forth from graphics to text using the
GRAPHIC command. The command GRAPHIC 0 switches the screen
back to text, while GRAPHIC 2 switches back to high-res without eras
ing the screen. Adding ,1 after the command erases the screen
In general the GRAPHIC command looks like this:
GRAPHIC mode, dear
this part is optional
Mode
Number
Effect
Text
High-res
High-res
+ text
Multi-color
Multi-color + text
Clear
Number
0
1
Effect
Don't clear screen
Clear screen
There is another way to clear the high-resolution screen. The command
SCNCLR erases the screen without changing the graphic mode.
Once you use high-resolution graphics, the computer sets aside 10K of
memory for your hi-res screen. This memory is taken from the BASIC
program area. When you are through using graphics, you can reclaim
this memory by using the command GRAPHIC CLR.
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