[ros-kernel] Re: Sharing code with wine + 16 bit support

[Phillip S. <ps...@cf...>]

Running the 16bit code is not a problem, you just create a 16bit v86 mode 
code segment selector and jump to it.  It's all of the support code for 
16bit apps that is difficult.  DOS apps expect to be able to make interrupt 
calls to dos as well as the bios, and be able to hook interrupts from 
hardware.  They also expect to be able to directly access hardware via IO 
ports.  Just to support DOS then, we have to write a fake bios, dos, and 
have the VDM fake interrupts and fake IO port access.  Then for windows 3.1 
support, you have to basically rewrite all of windows 3.1 to run inside the 
VDM, so this is not trivial.

At 06:44 PM 10/25/2001 +0200, you wrote:
Right. Emulation of 16 bit code should be fairly trivial, anyway, since 
it's mostly a feature of the Intel architecture


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