extended scancode fix for file prompt.
file open prompt now shows directory contents. typing in a directory
path enters the directly. typing in drive letter and colon "c:" goes to
that drive. unfortunately, now it's too big for the small memory model.
move where IRQ animator is drawn
Merge branch 'master' of https://git.castus.tv/git/user/jonathan.campbell/doslib
F8 is pause (debug)
made the IRQ indicator redraw function inline, which seems to fix the
redraw issues in real-mode builds.
try to mask DMA, then mask ESS DMA, then program DMA and unmask DMA
IRQ should be FAR not NEAR
remove "far" designator from interrupt handlers.
add -zu compiler flag to 16-bit real mode large and compact memory
models. I think what's causing problems with the SNDSB test program in
dos86l builds is that the SB IRQ interrupt function is calling
subroutines and the subroutines are assuming that DS == SS when
accessing parameters. -zu is how you tell Watcom C to not assume DS ==
SS when compiling.
and of course, the BAT files
add reminders to self why we use the -zu compiler switch for 16-bit real
mode Large and Compact memory models.
disable directory listing code for small/compact memory model
don't compile the IDE test program for dos86c
bat files again
bat files again
*sigh* bat files AGAIN
Merge branch 'master' of https://git.castus.tv/git/user/jonathan.campbell/doslib

Conflicts:
	hw/8254/CLEAN.BAT
	hw/8254/MAKE.BAT
	windows/ntvdm/CLEAN.BAT
	windows/ntvdm/MAKE.BAT
add recognition of Compaq ES1887. Add code NOT to use ESS extensions if
not an ESS 688 (we can't seem to program the one on the Compaq system
properly---audio plays at 2.5x the speed we want).
add code to recognize 16-bit DMA if given