Re: [ros-dev] DOS Subsystem.

[Alex Ionescu]

Jerry wrote:
> I know that.  I have a copy of Ralf Brown's Interrupt List 
> http://www.ctyme.com/rbrown.htm for the x86 platform. I also know 
> there are some DOS specific structures that I have to duplicate for 
> compatibility.  My problem is that I need to know how to program a NT 
> System Service.

NTVDM/VDM is nor a service nor a subsytem. The only "hack" for it is in 
CreateProcess which launches ntvdm.exe with the application name 
suffixed (this code is already in trunk).

The rest depends on:
1) ABIOS implementation in ntoskrnl
2) GUI calls in Win32K
3) NTVDM
4) VDM support in CSRSS
5) BIOS, io.sys, config.sys, etc files

Best regards,
Alex Ionescu