it doesn't have gfx card fully compatible with EGA

You can get the game running by enabling the vertical interrupt on your VGA card (jumper), but the screen will be garbled because there is another difference EGA vs VGA.

Thank guys

But it's still an odd decision to make an only EGA game since IBM released MCGA/VGA in 1987. Gauntlet for PC was released in 1988.

Into the eagle's nest and blockbuster can run fine in EGA on 486sx. Why not Gauntlet?

VGA cards (and monitors) were very expensive in 1988. Games didn't support VGA because only a few people had the equipment to run it, and it was much more expensive to develop a VGA game instead of a EGA+CGA+Tandy game.

5u3 wrote:

VGA cards (and monitors) were very expensive in 1988. Games didn't support VGA because only a few people had the equipment to run it, and it was much more expensive to develop a VGA game instead of a EGA+CGA+Tandy game.

You're right. Gauntlet programers won't know their game won't work with VGA card or they chose an EGA standart resolution, not this tweak one.

Their programming is perfectly fine. It's VGA that is incompatible to EGA there (no IRQ by default and splitscreen is counted in physical scanlines and thus breaks on VGA's double scanning).

So VGA is not 100% compatible with EGA like EGA is not 100% compatible with CGA. Got it.