To answer my first question, Kamerat posted in another thread a modified version of SETUPDS.EXE that will accept the KT133 southbridge as DDMA capable. However when using DDMA DOOM crashes at startup, and Quake freeze. Wolf3d has no issues. All three work without problem with DSDMA.EXE.

For DOS gaming on a PCIe system I would choose a ESS Solo-1 soundcard on a VIA based motherboard. Using the Yamaha YMF7xx DSDMA TSR requires EMM386 loaded and sometimes the system looses access to the harddrive when quitting games so you got to restart the system. I have bought a YMF724 that is …

Curious: would Ultima VII actually need to enable unreal mode if HIMEM.SYS is already loaded? Since HIMEM afaik uses unreal mode to access high memory, the game developers could have used HIMEM instead of setting it up on their own.

I use the "mbr" package provided by various Linux distributions. It is a very basic, 1 sector bootloader, that simply asks the user for the partition number to boot: http://manpages.ubuntu.com/manpages/xenial/man8/install-mbr.8.html Also one modification I made to my DOS 6.00 IO.SYS is to patch the …