IBM 240 manual Display modes, DOS Screen Image on the LCD

Attaching an external monitor

	Important
Do	not disconnect the external monitor		while the	computer is in
suspend mode or hibernation mode. If no external				monitor is
attached when		the computer resumes,	the LCD remains blank
and	output is not displayed. This restriction does not depend o
the	resolution	value.

The DOS Screen Image on the LCD

If you use a DOS application that supports only VGA mode (640x48 resolution) with your computer, the screen image might appear smaller than the display size, as shown:

This	is to	maintain compatibility with DOS	applications. To expand
the	screen	image to the same size as	the	actual	screen,	you
the screen		expansionfunction. You can expand	the	screen	image	by

clicking on the LCD button )( in the ThinkPad Configuration

program and enabling the radio ScreenbuttonExpansionfor and

clicking onOK . However, the image might look slightly distorted.

Display modes

The ThinkPad 240 computer has an				LCD that supports					SVGA
(800x600 resolution) video mode. The					following		table	shows		the
various display	modes		(resolution		and color depth) available with
your computer or external monitor.					Use	this	table		to	set	the di
output LCD( , External	Display		orLCD+External		Display	).
Note: When installing		an	operating	system,		you	must	install		the
display driver		supplied with			the	computer		to	use	SVGA	mode.

Chapter 2. Extending the features of 65 your computer