Graphic adapters in DOS mode.

[Opa]

I am using an old DOS based program that uses grahics in VGA (640x480) mode.
The program uses a TSR to redirect any graphics commands within the program
to the hardware registers of the graphic adapter. So far so good, however
when a text is displayed while in this VGA graphics mode, some graphic cards
display garbage while other cards display readable text. In some cases I
have to preload text drivers, like TsrFont.com, Fnt8x14.com or others to
display true text in thge graphics mode. How do I determine wether or not a
graphics card displays true text in the VGA garphis mode? This thing puzzles
me since the first version of W95.

 

[Jetro]

Is there a difference between Full-Screen and Windowed modes?

 

[Jetro]

Is there a difference between Full-Screen and Windowed modes?

 

[Opa]

In Windows XP and 2000 the program does not allow anything else than full
screen in DOS graphics mode. However in Windows 95 and 98 the size of the
displayed screen can be switched between full screen and 640x480.

 

[NobodyMan]

XP and 2000 provide NO DOS graphics modes because those two Operating
Systems provide NO DOS.