matze79 wrote:

Hm i never got any VGA Card with EGA fully combatible with EGA.
Many Software still detects VGA.. and often you can't change that behavior.

Well yea, VGA is backwards compatible with EGA, but I don't know of any card that can 'block' the new VGA features. So if there is software that tries to detect EGA or VGA, it will still detect VGA.
It's possible to create a TSR that intercepts the detection, so you can force the VGA detection to fail.
One common detection method is to try to set a VGA graphics mode via the BIOS and see if it failed or succeeded. This is quite easy to intercept.

matze79 wrote:

Hm i never got any VGA Card with EGA fully combatible with EGA.
Many Software still detects VGA.. and often you can't change that behavior.

Connecting a EGA Monitor to a OAK for example will not give you what you expect.

I can confirm this 100% it has been my experience as well. Games just detected it as vga (even though it was jumpered for ega mode) and all sorts of nonsense happened, from weird colors to totally messed screen.

keropi wrote:

matze79 wrote:

Hm i never got any VGA Card with EGA fully combatible with EGA.
Many Software still detects VGA.. and often you can't change that behavior.

Connecting a EGA Monitor to a OAK for example will not give you what you expect.

I can confirm this 100% it has been my experience as well. Games just detected it as vga (even though it was jumpered for ega mode) and all sorts of nonsense happened, from weird colors to totally messed screen.

Could you point me towards some games I can test to find out if that's the case with my cards as well?

Thanks!

^ Gods and Supaplex come to mind