🚀 go-pugleaf

  Im trying to write a 'bare-bones' multi-processing os for the 386.
I dont wont to create my own dos, obviously I want to use MS-DOS...
Question is, how do I do this in protected mode?
  Presumably, I create the GDT, LDTs, TSSs, IDTs, and the viarious gates...
But no matter HOW I map virtual memory with the GDT, LDTs, I cannot make
the virtual memory transparent, due to the priv bits and table indicator
bit. I need to put the 386 in protected mode, but it has to look the
same to MS-DOS, otherwise MS-DOS will fail, wont it? For instance, MS-DOS
knows one of its buffer is at seg:offs -- when I put the 386 into protected
mode, seg, rather than being a simple address, will now be treated as a
selection index into the GDT or LDT.

Is there some way (and how?) that I can get MS-DOS to work in the new
protected mode once I make the switch from real mode to protected mode?

Does anyone know of a ftp site or the like w/ detailed information on
MS-DOS that might help me here?

Many thanks
Greg Huey
ggh@reef.cis.ufl.edu