Diagnostic Video Tests B-3Color Bars SubtestThe color bars subtest displays 16 bars in different colorswith background intensity enabled. Under each bar is thename of the color that should be displayed. Type y if eachcolor bar is displayed correctly; otherwise, type n.Text Mode Pages TestThe Text Mode Pages Test checks the video subsystem’sability to map and present all available video pages onthe monitor screen, one page at a time. The test displayseight successive screens, the first of which contains21 lines of 77 zeros. The remaining seven screens areidentical to the first, except that each screen substitutes adifferent numeral (1 through 7) for the zeros.Type y if all the rows of numbers on each screen are dis-played correctly; otherwise, type n.Graphics Mode TestThe Graphics Mode Test checks the video subsystem’sability to present graphics mode data and colors. Eachscreen in this test allows you to check some aspect ofgraphics mode data and colors. The following sub-sections describe Graphics Mode Test screens in theorder in which they appear.NOTE: Some of the following tests may not appear ifyour system does not support the video mode beingtested.320 x 200 Graphics Mode ScreensThe Graphics Mode Test displays two successive320- x 200-pixel graphics mode screens: The first screendisplays three pyramids in red, green, and yellow; thesecond screen displays three pyramids in magenta, cyan,and white. Type y if all the pyramids are the correct col-ors; otherwise, type n.640 x 200 Black/White Graphics ModeScreenThe 640- x 200-pixel black/white graphics mode screendisplays a black rectangle and a white rectangle on a graybackground. Type y if the boxes are displayed correctly;otherwise, type n.640 x 480 Monochrome Graphics ModeScreenThe 640- x 480-pixel monochrome graphics mode screendisplays three chess pieces. Type y if all the chess piecesare identical and displayed correctly; otherwise, type n.320 x 200 16-Color Graphics ModeScreenThe 320- x 200-pixel 16-color graphics mode screen dis-plays a series of Xs in 16 different colors with the nameof the color beneath each X. Type y if all the Xs are thecorrect colors; otherwise, type n.640 x 200 16-Color Graphics ModeScreenThe 640- x 200-pixel 16-color graphics mode screen dis-plays a series of hexagons in 16 different colors with thename of the color beneath each hexagon. Type y if all thehexagons are the correct colors; otherwise, type n.640 x 350 16-Color Graphics ModeScreenThe 640 x 350 16-color graphics mode screen displays aseries of octagons in 16 different colors with the name ofthe color displayed beneath each octagon. Type y if allthe octagons are the correct colors; otherwise, type n.640 x 480 2-Color Graphics ModeScreenThe 640- x 480-pixel 2-color graphics mode screen dis-plays three chess pieces. Type y if all the chess pieces areidentical and displayed correctly; otherwise, type n.
