i am new to dos programming and i am planning to make a game but before i do that i need toi know how many pixelsor dots there are on a full dos screenand will windows XP run dos games i dont know if this is true but so guy told me that you cant run games in dos on windows xp?
1. Depends on your resolution.
4. And no.
XP has a very limited DOS emulator. It runs in virtual 8086 mode but it is very limited. Most driver stuff and sound card stuff - DMA programming and hardware interrupts will not work correctly.