What do you mean with "color MDA mode"? From what I know, MDA doesn't support color. Only 3 scales of black I think, if any?

The exact mechanics are a bit complicated.
https://www.seasip.info/VintagePC/mda.html
Under memory map, you can find the combinations supported.

I once made a program to display the mode with and without blinking enabled (to verify it's behaviour in my own emulator):
https://bitbucket.org/superfury/unipcemu/src/ … cal/TESTMDA.PAS

Compile with Turbo Pascal 6.0 or compatible (never tried it on older versions or newer version though).
Use the parameter "blink" (case sensitive) to enable blinking, otherwise omit it to disable blinking.

superfury wrote on 2025-06-19, 12:33:

What do you mean with "color MDA mode"? From what I know, MDA doesn't support color. Only 3 scales of black I think, if any? […]
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What do you mean with "color MDA mode"? From what I know, MDA doesn't support color. Only 3 scales of black I think, if any?

The exact mechanics are a bit complicated.
https://www.seasip.info/VintagePC/mda.html
Under memory map, you can find the combinations supported.

I once made a program to display the mode with and without blinking enabled (to verify it's behaviour in my own emulator):
https://bitbucket.org/superfury/unipcemu/src/ … cal/TESTMDA.PAS

Compile with Turbo Pascal 6.0 or compatible (never tried it on older versions or newer version though).
Use the parameter "blink" (case sensitive) to enable blinking, otherwise omit it to disable blinking.

I also wondered about the color part so I dug a little deeper and this came up
https://forum.vcfed.org/index.php?threads/a-s … mda-card.62616/

Yes, the original MDA undocumentedly supports color but I wonder what bit 7 of the attribute does, but it may be controlled by the blink control now that I know that also exists on the MDA.