I want to play my old time classic games like Scorched Earth and Sid & Al Incredible Toons (Dynamix). It runs in DOSBox but it's a bit slow. I thought about increasing the cpu cycles but it's still a jerky game.

Here is what it says outside DosBox:

You do not have enough memory to run this program.
You currently have 592800 free bytes of conventional memory,
and 65536 bytes of EMS memory.
You need at least 570000 free bytes of conventional memory,
and 737280 free bytes of EMS memory.