Diagnostic Programs
BASIC Code Listings
Test Monochrome Display

8000 REM ======== ========
8005 REM ======== DISPLAY / MONITOR TESTS ========
8150 REM ==== Test Monochrome Display Attributes ====
8160 SCREEN 0, 1: COLOR 7, 0: CLS
8170 PRINT "******** Display Attribute Test ********": PRINT
8180 COLOR 15, 0: PRINT "This line should be bright white on black.": PRINT
8181 COLOR 23, 0: PRINT "This line should be blinking.": PRINT
8182 COLOR 0, 7: PRINT "This line should be black on white.": PRINT
8183 COLOR 1, 0: PRINT "This line should be underlined.": PRINT
8190 COLOR 7, 0: LOCATE 24, 1: PRINT "Press any key ...";
8195 K$ = INKEY$: IF K$ = "" THEN 8195