B-2 Dell Latitude CP Reference and Troubleshooting GuideThe following subsections describe the subtests of theText Mode Character Test in the order in which theyappear.Character Attributes Subtest (80 x 25)The 80-column x 25-line character attributes subtest dis-plays four lines of text that demonstrate normal-intensityvideo, reverse video, intensified video, and blinkingvideo.Character Set Subtest (80 x 25)The 80-column x 25-line character set subtest displays all256 characters in the American Standard Code for Infor-mation Interchange (ASCII) character set in 80-columnby 25-line text mode. Figure B-1 shows part of the char-acter set subtest screen.Figure B-1. 80-Column x 25-Line Character SetSubtest ScreenCharacter Attributes Subtest (40 x 25)The 40-column x 25-line character attributes subtestdisplays four lines of text, in 40-column by 25-line(double-wide) text mode, that demonstrate normal-intensity video, reverse video, intensified video, andblinking video.Character Set Subtest (40 x 25)The 40-column x 25-line character set subtest displays all256 characters in the ASCII character set in 40-columnby 25-line (double-wide) text mode. Figure B-2 showspart of the 40-column x 25-line character set subtestscreen.Figure B-2. 40-Column x 25-Line Character SetSubtest ScreenText Mode Color TestThe Text Mode Color Test contains three subtests thatcheck the video subsystem’s ability to present color intext modes. The following subsections describe thesesubtests.Color Attributes Subtest (80 x 25)The 80-column x 25-line color attributes subtest displaysa pattern of 16 rows and 16 columns in 80-column by25-line text mode. Each row has a hexadecimal numberin a unique foreground color and each column has aunique background color. Where the same foreground
