17 replies to this topic

[Qbix]

No, only if they use that specific call.

it's a call which can do 2 things.
One of these things is set the color scheme.

The difference is when to do which thing.
Your bios sets the default colourscheme on different types of input than most bioses do.

Your bios does it if the value supplied is an odd number
DOSBox in vga mode does it if the value is one
DOSBox in cga mode does it if the value is not zero.

The game writes an odd number which is not 1. So both DOSBox(upcoming) in cga mode and your bios set the default colour scheme, where as most vga implementations(including DOSBox in vga mode) do nothing.

Your bios is probably more compatible with the game. (as it makes little sense to ignore the input as the other vga bioses do.) But it might break some other game. Who knows......

[A. J. Raffles]

It's almost beginning to make sense to me now. Would that also explain why I couldn't see any differences in DOSBox between the VGA CGA and Tandy modes?

[Qbix]

well that has nothing to do with your video card. (as DOSBox emulates one for you)

but the reason why all 3 modes look the same was because 0.63
treated that call always the same (the vga way). (so it ignored the default colour scheme)