- better 8250 emulation;
- fake vertical retrace bit in Input Status #1 register
(this was lost in the VGA emu rewrite).
Submitted by: Igor Serikov <bt@turtle.pangeatech.com>
- emulate VGA read mode 0,
- emulate VGA write mode 1,
- minor cleanup.
Protel's Easytrax, a free PCB layout program, almost runs now; there are
still some problems with the keyboard emulation, but the graphics are fine
(albeit a bit slow).
- slightly more accurate VGA hardware emulation;
- more int 10 functions, especially wrt to palette handling;
- first shot at graphics support;
- mode switching.
Bugs:
- graphics too slow;
- only 16 color modes work for now;
- works only under X, and only with 16 bit TrueColor visuals;
- far from being genuinely useful (I can play an old EGA game now, though
(mahjongg.exe)).
Also, the code has been cleaned up a bit (more to come in a separate commit).
Replace all in-tree uses with necessary subset of <sys/{fb,kb,cons}io.h>.
This is also the appropriate fix for exo-tree sources.
Put warnings in <machine/console.h> to discourage use.
November 15th 2000 the warnings will be converted to errors.
January 15th 2001 the <machine/console.h> files will be removed.
Add a title "DOS" to the X window.
Submitted by: Parag Patel <parag@cgt.com>
PR: bin/8486
Note: The pr was closed a long time ago when the original patch was
applied, rather than the amended one.
doscmd heavily depends on struct sigcontext which luckily is mostly passed
between functions as usion regcontext_t. By redefining union regcontext_t in
terms of mcontext_t almost all bases are covered.
It also seems to me that doscmd was in a transitional state. The redundant
definitions made it difficult to get a clear overview and could easily cause
oversight. To make sure my changes were ok, I went as far as to complete the
transition. It was not exactly necessary, but I expect to have to come back
here some more ("whistle" if I'm wrong :-).
