IBM 770 manual Video Subsystem, Note Use, Subsystems

Video Subsystem

The video subsystem consists of the XGA video controller and video random-access memory (VRAM). The video subsystem supports an

IBM thin-film transistor (TFT) as follows:

		Color	Depth		Resolution
LCD	VRAM
		On the		On the	On the	On	the
Type	Size			External		External
		LCD			LCD
				Display		Display
						640 ×480
XGA TFT						800	×600
	2 MB	65,536		16,777,216	1024×768	1024×768
						1280 ×1024
						1600 ×1200

The video subsystem also supports PS/2 analog displays without any additional adapters.

Note: Use	of	any video	subsystem	features not documented in this
book	can	result in	future incompatibility.
Color			Resolution
			640	×480
65,536	colors		800	×600
			1024×768
16,777,216 colors			640	×480
			800	×600

3-2 Subsystems