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Date: Sun, 20 Aug 2017 13:52:04 -0700 (PDT)
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Subject: Re: please make djgpp host binaries work on x64 (a type of WinPE)
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Hi,

On Saturday, August 19, 2017 at 7:04:46 PM UTC-5, Jim Michaels wrote:
> 
> I am using a UEFI machine with CSM. ASUS P9x79 deluxe v1.0

So it boots and runs FreeDOS?
 
> the kinds of changes I am asking for might require working with
> the WIN32 API as a host ... and a change to the format of the
> executable of the compiler. it may run on DPMI for XP since 
> XP 32-bit runs DOS stuff

Sure, it's possible but unlikely. Windows doesn't need DOS anymore,
and the devs aren't interested. Your best bet is running some
minimal Win32 stuff under HX in DOS. (Or just dual boot!)

> you would have to make a runtime for the x64 windows platform.
> memory allocation and such probably doesn't use DPMI.
> there are native threads using CreateThread() and a HANDLE.
> but pointer sizes on the 64-bit platform are 64-bit in size,
> and so are addresses and sometimes data.

DJGPP is just not interested in natively targeting Windows.
It would be an unnecessary duplication of effort.