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James Gregory 2013-12-31 11:06:31 +11:00
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23-04.md
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@ -107,6 +107,10 @@ just to be safe.) Immediately after setting palette RAM, however, 20h
Index register to restore normal video, and at all other times bit 5
should be set to 1.
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![](images/i.jpg) *By the way, palette RAM can be set via the BIOS video interrupt (interrupt 10H), function 10H. Whenever an VGA function can be performed reasonably well through a BIOS function, as it can in the case of setting palette RAM, it should be, both because there is no point in reinventing the wheel and because the BIOS may well mask incompatibilities between the IBM VGA and VGA clones.*
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> ![](images/i.jpg)
> By the way, palette RAM can be set via the BIOS video interrupt
> (interrupt 10H), function 10H. Whenever an VGA function can be performed
> reasonably well through a BIOS function, as it can in the case of
> setting palette RAM, it should be, both because there is no point in
> reinventing the wheel and because the BIOS may well mask
> incompatibilities between the IBM VGA and VGA clones.