There was Checkit 4.0 ???BTW i am using version 4.0.
There was Checkit 4.0 ???
AFAIK the last original Checkit version was 3.0, and the next was Checkit Pro 1.0
Well, once I saw something identifying itself as "Checkit 5.0", but turned out to be fake.
DITTO -- it's actually 3.0 hacked to report it's 4.1.Only a couple of bytes difference, compared to 3.0
Looks like a fake to me.
DITTO -- it's actually 3.0 hacked to report it's 4.1.
What computer are you testing that card in?
It's designed for pre-PS/2 IBM PCs, and possibly for low-end PS/2s with MCGA.
It may exhibit problems in later machines.
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - GRAY-SCALE SUMMING
AH = 12h
BL = 33h
AL = new state
00h enable gray scale summing
01h disable gray scale summing
Return: AL = 12h if function supported
Desc: specify whether or not colors should be converted to gray scale when
palette or color registers are loaded