AT&T PC 6300 - Parallel Port Test

DIAGNOSTICS
80 by 25 Alphanumerics, Paging: Exercises the addressing
circuitry from the display controller chip to display controller
memory using the 80 by 25 mode.
40 by 25 Alphanumerics, Paging: Exercises the addressing
circuitry from the display controller chip to display controller
memory using the 40 by 25 mode.
640 by 400 Graphics, 2 Color: Exercises the 640 by 400
graphics mode using two colors.
640 by 200 Graphics, 2 Color: Exercises the 640 by 200
graphics mode using two colors.
Parallel Port Test
This test checks the path to the Parallel interface,
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80 by 25 Alphanumerics, Character Attributes: Checks the
Display Controllers logic for normal intensity, reverse, underline, m
blinking, reverse-blinking, underline-blinking, high-intensity, j j
underline high-intensity, and blinking high-intensity modes.
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320 by 200 Graphics, 4 Color: Exercises the 320 by 200 «
graphics mode using four colors. - / (
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