Nice. Except that Mode X was not usually called 13h. The former would be 320x240 and the latter 320x200. Technically X would be a variant of the 13h, though.

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ale42 6 days ago | parent [-]

And actually, INT 13h is the BIOS interrupt to access block-based disk I/O functions (like sector read, track format, etc.). The INT used for mode-setting is 10h (with AH=00h and AL=13h as mode for 320x200 at 256 colors).

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gneissguise 6 days ago | parent [-]

Thank you both for the corrections, I was a teen in the 90s so I could have had it wrong or misremembered.

I just looked up the 13h interrupt and you are absolutely right!

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kookamamie 6 days ago | parent [-]

An awesome contribution nevertheless!

	▲	gneissguise 5 days ago \| parent [-]
		Thank you!