SCREEN

SCREEN

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SCREEN [mode] [, [colorburst] [, [apage] [, [vpage] [, erase]]]]

Change the video mode, composite colorburst, active page and visible page.

Parameters

mode is a numeric expression that sets the screen mode.

Mode	Notes
0	Text: 80x24 characters. Two attributes picked from 16 colors.
1	Bitmap: 240x192 pixels. 40x24 characters. 8x1 attributes from 16 colors.

Notes

The driver for SCREEN 1 is stored in RAM and can be replaced with a driver for any screen mode supported by the hardware.

Errors

• No parameters are specified: Missing operand.
• Any parameter has a string value: Type mismatch.
• Any parameter is not in [-32768 to 32767]: Overflow.
• mode is not an available video mode number for your video card setting: Illegal function call.