Apple IIe - Page 109

Apple BASIC Reference Guide 109
Example
]HGR
When the preceding example is executed, the high-resolution
graphics mode will be set and the screen will be cleared to black.
There
will also be four lines of text at the bottom. If the cursor is
not visible, press the return key until it appears. The cursor may
not be visible if it is located in the graphics area of the screen
rather than
the text area.
HGR2
• Applesoft
D Integer
HGR2 sets the screen to the high resolution graphics mode
without the text lines at the bottom of the display (280x192). Page
2
of high-resolution screen memory is displayed by HGR2.
Configuration
HGR2
In
the 80-column mode, HGR2 displays page 1 of screen memory
rather then page 2. This can be illustrated by running the follow-
ing example in both the 40 and 80 column modes. It appears that
this is due to the fact that the softswitch that activates screen two
does not work in the 80-column mode.
Example
10 HGR
20 HCOLOR = 2
30 HPLOT 100,100 TO 150,180
35 FOR I= 1TO1000: NEXT I
40 TEXT
50 INPUT "PRESS RETURN TO SEE PAGE 2";A$
60 HGR2
70 HPLOT 0,0 TO 100,0