void setscreen(void)
{
#ifndef WINCIT
int mode;
union REGS REG;
static uchar heightmode = 0;
static uchar scanlines = 0;
char mono = 0;
char far *CrtHite = (char far *) 0x00400085L;
if (!cfg.restore_mode)
{
heightmode = 0;
scanlines = 0;
}
if (gmode() == 7)
{
mono = TRUE;
}
if (!heightmode)
{
if (*CrtHite == 8)
{
heightmode = 0x012;
}
else if (*CrtHite == 14)
{
heightmode = 0x011;
}
else if (*CrtHite == 16)
{
heightmode = 0x014;
}
}
if (scanlines)
{
REG.h.ah = 0x12; // Video function:
REG.h.bl = 0x30; // Set scan lines
REG.h.al = scanlines; // Num scan lines
int86(0x10, ®, ®);
}
if (heightmode && conMode != -1) // make sure heightmode is set
{
// conMode 1000 --> EGA 43 line, or VGA 50 line
REG.h.ah = 0x00;
REG.h.al = (uchar) ((conMode >= 1000) ? 3 : conMode);
int86(0x10, ®, ®);
// Set to character set 18, (EGA 43 line, or VGA 50 line)
if (conMode == 1000)
{
REG.h.ah = 0x11;
REG.h.al = 18;
REG.h.bl = 0x00;
int86(0x10, ®, ®);
}
else
{
REG.h.ah = 0x11;
REG.h.al = heightmode;
REG.h.bl = 0x00;
int86(0x10, ®, ®);
}
}
if (!scanlines)
{
getScreenSize(&conCols, &conRows);
if (!mono)
{
if (conRows == 24)
{
if (*CrtHite == 14) scanlines = 1; // Old char set
if (*CrtHite == 16) scanlines = 2; // Vga char set
}
if (conRows == 42) scanlines = 1;
if (conRows == 49) scanlines = 2;
}
else
{
if (conRows == 24) scanlines = 1;
if (conRows == 27) scanlines = 2; // herc only
if (conRows == 42) scanlines = 1;
}
}
mode = gmode();
conMode = (mode == 3 && conMode >= 1000) ? conMode : mode;
if (mode == 7)
{
physScreen = (char far *) 0xB0000000L; // mono
logiScreen = saveBuffer ? saveBuffer : physScreen;
}
else
{
physScreen = (char far *) 0xB8000000L; // cga
logiScreen = saveBuffer ? saveBuffer : physScreen;
setborder(cfg.battr);
}
dgLogiScreen = logiScreen;
getScreenSize(&conCols, &conRows);
scrollpos = conRows - StatusLine.Height();
if (cfg.bios)
{
charattr = bioschar;
stringattr = biosstring;
}
else
{
charattr = directchar;
stringattr = directstring;
}
OC.ansiattr = cfg.attr;
#endif
}
void ogmode() /* return to it */
{
gmode(oldgmode);
}
