int chs_biosdisk(int cmd, int drive, int head, int track,int sector, int nsects, void *buf)
{
unsigned tries, err;
struct SREGS sregs;
union REGS regs;
/* set up registers for INT 13h AH=02/03h */
sregs.es = FP_SEG(buf);
regs.h.dh = head;
regs.h.dl = drive;
regs.h.ch = track;
regs.h.cl = ((track >> 2) & 0xC0) | sector;
regs.x.bx = FP_OFF(buf);
/* make 3 attempts */
for(tries = 1; tries != 0; tries--)
{
if(cmd == _DISK_RESET)
regs.h.ah = 0x00;
else if(cmd == _DISK_STATUS)
regs.h.ah = 0x01;
else if(cmd == _DISK_READ)
regs.h.ah = 0x02;
else if(cmd == _DISK_WRITE)
regs.h.ah = 0x03;
else if(cmd == _DISK_VERIFY)
regs.h.ah = 0x04;
else if(cmd == _DISK_FORMAT)
regs.h.ah = 0x05;
else
return 1; /* invalid command */
regs.h.al = nsects;
int86x(0x13, ®s, ®s, &sregs);
err = regs.h.ah;
if(err == 0)
return 0;
/* reset disk */
regs.h.ah = 0;
int86x(0x13,®s,®s,&sregs);
}
hxc_printf(0,"chs_biosdisk: error 0x%02X\n", err);
return err;
}
int isWprot(int drive)
{
union REGS regs;
struct SREGS sregs;
char buf[512], FAR *bufptr = (char FAR *)buf; /* Needed by MSC */
/* First read sector 0 */
segread(&sregs);
regs.x.ax = 0x201;
regs.x.cx = 1;
regs.x.dx = drive & 0x7f;
sregs.es = FP_SEG(bufptr);
regs.x.bx = FP_OFF(bufptr);
int86x(0x13, ®s, ®s, &sregs);
if (regs.x.cflag && regs.h.ah != 6)
{
regs.h.ah = 0x00; /* reset diskette subsystem */
regs.h.dl = drive & 0x7f;
int86x(0x13, ®s, ®s, &sregs);
return -1;
}
/* Try to write it back */
segread(&sregs);
regs.x.ax = 0x301;
regs.x.cx = 1;
regs.x.dx = drive & 0x7f;
sregs.es = FP_SEG(bufptr);
regs.x.bx = FP_OFF(bufptr);
int86x(0x13, ®s, ®s, &sregs);
return (3 == regs.h.ah);
}
/* Set a 256 entry pallette with the values given in "palbuf". */
static void
setmany(unsigned char palbuf[256][3], int start, int count)
{
unsigned char _far *fp;
union REGS regs;
struct SREGS sregs;
unsigned i;
#if defined( __GNUC__ )
/* This should work for most compilers - only tested with GNU C++, so
it isn't turned on for anything else */
for (i=start;i<start+count;i++) {
regs.x.ax = 0x1010;
regs.x.bx = i;
regs.h.ch = palbuf[i][1];
regs.h.cl = palbuf[i][2];
regs.h.dh = palbuf[i][0];
int86x(0x10, ®s, ®s, &sregs);
return;
}
#elif defined( DOS386 )
/* Put the contents of the new palette into real memory, the only
place I know that won't impact things is the video RAM. */
fp = MK_FP(_x386_zero_base_selector, 0xA0000);
#else
/* If you aren't using GNU C++ or Zortech C++ for 386 protected mode,
then you need to use a compiler that supports access to all of the
registers, including ES, to be able to set the pallette all at once. */
fp = MK_FP(0xA000, 0);
#endif
/* If you got here then you are using Zortech C++ */
for (i=start;i<start+count;i++) {
fp[3*(i-start) ] = palbuf[i][0];
fp[3*(i-start)+1] = palbuf[i][1];
fp[3*(i-start)+2] = palbuf[i][2];
}
regs.x.ax = 0x1012;
regs.x.bx = start;
regs.x.cx = count;
regs.x.dx = 0;
segread(&sregs);
sregs.es = 0xA000;
#if defined( DOS386 )
int86x_real(0x10, ®s, ®s, &sregs);
#else
int86x(0x10, ®s, ®s, &sregs);
#endif
/* Now clear off the values that got dumped into the video RAM */
for (i=0;i<3*count; i++)
*fp++ = 0;
}
static int
setvesamode(int mode, int clear)
{
union REGS regs;
struct SREGS sregs;
struct ModeInfoBlock *VgaPtr = &VESAModeInfo;
unsigned i;
/* Call VESA function 1 to get mode info */
regs.h.ah = 0x4f;
regs.h.al = 0x01;
regs.x.cx = mode;
#if defined( DOS386 )
regs.x.di = real_buf[0];
segread(&sregs);
sregs.es = real_buf[1];
int86x_real(0x10, ®s, ®s, &sregs);
if (regs.h.al != 0x4f || regs.h.ah != 0)
return 0;
for (i=0; i<sizeof(struct ModeInfoBlock); i++)
((unsigned char *)VgaPtr)[i] = real_ptr[i];
#elif defined( __GNUC__ )
regs.x.di = real_buf[0];
int86x(0x10, ®s, ®s, &sregs);
if (regs.h.al != 0x4f || regs.h.ah != 0)
return 0;
for (i=0; i<sizeof(struct ModeInfoBlock); i++)
((unsigned char *)VgaPtr)[i] = real_ptr[i];
#else
regs.x.di = FP_OFF(VgaPtr);
sregs.es = FP_SEG(VgaPtr);
int86x(0x10, ®s, ®s, &sregs);
if (regs.h.al != 0x4f || regs.h.ah != 0)
return 0;
#endif
/* The mode is supported - save useful information and initialize
the graphics display */
line_length = VgaPtr->BytesPerScanLine;
granularity = ((unsigned long)VgaPtr->WinGranularity) << 10;
screen_maxx = VgaPtr->XResolution;
screen_maxy = VgaPtr->YResolution;
if (Reset_Display_Flag) {
/* Now go set the video adapter into the requested mode */
regs.h.ah = 0x4f;
regs.h.al = 0x02;
regs.x.bx = mode;
int86(0x10, ®s, ®s);
return (regs.h.al == 0x4f && regs.h.ah == 0x00 ? 1 : 0);
}
}
unsigned int EMSbaseaddress(void)
{
static const char tag[] = EMS_ID;
char far *p;
int i;
union REGS regs;
struct SREGS segs;
regs.h.ah = 0x35;
regs.h.al = EMS_INT;
int86x(0x21, ®s, ®s, &segs);
p = (char far *) (MK_FP(segs.es, 10)); /* EMS_ID must be at offset 10 */
for(i = 0; i < 8; i++)
{
if(tag[i] != p[i])
return 0; /* If EMS_ID not found, return */
}
regs.h.ah = EMSservice2; /* Get page frame segment */
int86(EMS_INT, ®s, ®s);
return regs.h.ah ? 0 : (unsigned int) regs.x.bx;
}
void CheckMouseDriver()
{
union REGS regs;
struct SREGS sregs;
regs.x.ax = 0x0000;
int86(MOUSE, ®s, ®s);
if (regs.x.ax == 0xffff)
{
UseMouse = TRUE; /* mouse */
#ifdef CIRRUS_PATCH
/*
note from RQ:
This test is temporary and should be removed in DEU 5.3
We should create a better "fake cursor" by using the
mouse callback function. Remember to remove the callback
when DEU exits...
*/
if (CirrusCursor == TRUE)
{
regs.x.ax = 0x000C;
regs.x.cx = 0x0001;
regs.x.dx = FP_OFF( MouseCallBackFunction);
sregs.es = FP_SEG( MouseCallBackFunction);
int86x( MOUSE, ®s, ®s, &sregs);
}
#endif /* CIRRUS_PATCH */
}
else
UseMouse = FALSE; /* no mouse */
}
/* Sets up the palette for antialiasing with the specified colors.
* Intensity steps for each color are scaled from the full desired intensity
* of the red, green, and blue components for that color down to 0%
* intensity; each step is rounded to the nearest integer. Colors are
* corrected for a gamma of 2.3. The values that the palette is programmed
* with are hardwired for the VGA's 6 bit per color DAC.
*/
void SetPalette(struct WuColor * WColors)
{
int i, j;
union REGS regset;
struct SREGS sregset;
static unsigned char PaletteBlock[256][3]; /* 256 RGB entries */
/* Gamma-corrected DAC color components for 64 linear levels from 0% to 100% intensity */
static unsigned char GammaTable[] = {
0, 10, 14, 17, 19, 21, 23, 24, 26, 27, 28, 29, 31, 32, 33, 34,
35, 36, 37, 37, 38, 39, 40, 41, 41, 42, 43, 44, 44, 45, 46, 46,
47, 48, 48, 49, 49, 50, 51, 51, 52, 52, 53, 53, 54, 54, 55, 55,
56, 56, 57, 57, 58, 58, 59, 59, 60, 60, 61, 61, 62, 62, 63, 63};
for (i=0; i<NUM_WU_COLORS; i++) {
for (j=0; j<WColors[i].NumLevels; j++) {
PaletteBlock[j][0] = GammaTable[((double)WColors[i].MaxRed * (1.0 -
(double)j / (double)(WColors[i].NumLevels - 1))) + 0.5];
PaletteBlock[j][1] = GammaTable[((double)WColors[i].MaxGreen * (1.0 -
(double)j / (double)(WColors[i].NumLevels - 1))) + 0.5];
PaletteBlock[j][2] = GammaTable[((double)WColors[i].MaxBlue * (1.0 -
(double)j / (double)(WColors[i].NumLevels - 1))) + 0.5];
}
/* Now set up the palette to do Wu antialiasing for this color */
regset.x.ax = 0x1012; /* set block of DAC registers function */
regset.x.bx = WColors[i].BaseColor; /* first DAC location to load */
regset.x.cx = WColors[i].NumLevels; /* # of DAC locations to load */
regset.x.dx = (unsigned int)PaletteBlock; /* offset of array from which
to load RGB settings */
sregset.es = _DS; /* segment of array from which to load settings */
int86x(0x10, ®set, ®set, &sregset); /* load the palette block */
}
}
void MsCloseMouse()
{
int x, y;
MS_WINDOW_PROC* p;
union REGS r;
struct SREGS s;
r.x.ax = 2;
int86x(0x33, &r, &r, &s);
/* Unregister Timer Filter */
TmUnregisterFilter(MsTimerFilter);
/* Delete map */
for(x = 0; x < HASH_X; x++)
{
for(y = 0; y < HASH_Y; y++)
{
p = g_pScreenPos[y][x];
while(p != NULL)
{
g_pScreenPos[y][x] = p->pNext;
free(p);
p = p->pNext;
}
}
}
}
int _go32_dpmi_allocate_real_mode_callback_iret(_go32_dpmi_seginfo *info, _go32_dpmi_registers *regs)
{
unsigned char *wrapper = (unsigned char *)malloc(sizeof(wrapper_common) + sizeof(wrapper_iret));
if (wrapper == 0)
return 0x8015;
memcpy(wrapper, wrapper_common, sizeof(wrapper_common));
memcpy(wrapper+sizeof(wrapper_common), wrapper_iret, sizeof(wrapper_iret));
*(long *)(wrapper+11) = info->pm_offset - (int)wrapper - 15;
info->size = (int)wrapper;
r.x.ax = 0x0303;
r.x.si = (int)wrapper;
r.x.di = (int)regs;
s.ds = _go32_my_cs();
s.es = _go32_my_ds();
s.fs = 0;
s.gs = 0;
int86x(0x31, &r, &r, &s);
if (r.x.flags & 1)
{
return r.x.ax;
}
else
{
info->rm_segment = r.x.cx;
info->rm_offset = r.x.dx;
return 0;
}
}
//--------------------------------------------------------------------------
//
// XMSinit: initialise XMS system (first time only).
//
// The first time it is called, this function locates the XMS driver
// and allocates a handle for a zero-byte block. It returns TRUE if
// a handle was successfully allocated. Subsequent calls return the
// same value.
//
static XMS::error XMSinit ()
{
//--- check if this is the first time XMSinit has been called
if (XMSinited == 0)
{
//--- now it isn't!
XMSinited = 1;
//--- check if an XMS driver is present (magic spell)
REGS r;
r.x.ax = 0x4300;
int86 (0x2F, &r, &r);
if (r.h.al != 0x80)
return XMS::NO_DRIVER;
//--- get the XMS driver's address (magic spell)
SREGS s;
r.x.ax = 0x4310;
int86x (0x2F, &r, &r, &s);
XMSdriver = (void far (*)()) MK_FP(s.es,r.x.bx);
}
//--- return success indicator
return (XMSdriver != 0 ? XMS::SUCCESS : XMS::NO_DRIVER);
}
unsigned int ReadSector(unsigned long *secno, unsigned char *buf) {
union REGS r;
struct SREGS s;
r.x.ax = 0x1508; /* Absolute Read */
r.x.si = FP_SEG(secno); /* SI:DI -> starting sector no. */
r.x.di = FP_OFF(secno);
s.es = FP_SEG(buf); /* ES:BX -> buffer */
r.x.bx = FP_OFF(buf);
r.x.cx = 0x4; /* Drive E */
r.x.dx = 0x1; /* Num of secs */
int86x(0x2F, &r, &r, &s);
if (r.x.cflag) {
switch (r.x.ax) {
case 0xF:
printf("Invalid drive!\n");
break;
case 0x15:
printf("Drive not ready!\n");
break;
default:
printf("Unknown error!\n");
}
return r.x.ax;
} else
printf("Success Read!\n");
return 0;
}
int GetDriverAddress(char *cdDriver){
int handle;
union REGS regs;
struct SREGS sregs;
struct DTA {
char cmd;
char far * pdevHdr;
} dta;
struct DTA far *pdta;
handle = open( cdDriver, O_BINARY);
if (handle==-1) return(-1);
dta.cmd = 0;
pdta = &dta;
regs.h.ah = 0x44;
regs.h.al = 0x02;
regs.x.bx = handle;
regs.x.cx = 5;
sregs.ds = FP_SEG(pdta);
regs.x.dx = FP_OFF(pdta);
int86x (0x21,®s,®s,&sregs);
close(handle);
if (regs.x.cflag) return(-1);
FP_SEG(DevStrategy) = FP_SEG(dta.pdevHdr);
FP_OFF(DevStrategy) = *(int far *)(dta.pdevHdr+6);
FP_SEG(DevInterrupt) = FP_SEG(dta.pdevHdr);
FP_OFF(DevInterrupt) = *(int far *)(dta.pdevHdr+8);
LastUnit = *(dta.pdevHdr+21) - 1;
return (0);
}
/* Write sector (Win95 version) */
dsk_err_t win16_write(DSK_DRIVER *self, const DSK_GEOMETRY *geom,
const void *buf, dsk_pcyl_t cylinder,
dsk_phead_t head, dsk_psect_t sector)
{
WIN16_DSK_DRIVER *w16self;
union REGS reg;
struct SREGS sreg;
dsk_err_t err;
unsigned char old_dpt[11];
int tries;
if (!buf || !self || !geom || self->dr_class != &dc_win16) return DSK_ERR_BADPTR;
w16self = (WIN16_DSK_DRIVER *)self;
if (w16self->w16_readonly) return DSK_ERR_RDONLY;
err = win16_checkgeom(w16self, geom, old_dpt, 0xF6);
if (err) return err;
for (tries = 0; tries < 3; tries++)
{
reg.x.ax = 0x0301; /* Read 1 sector */
reg.x.bx = FP_OFF(buf);
reg.h.ch = cylinder;
reg.h.cl = sector;
reg.h.dh = head;
reg.h.dl = w16self->w16_unit - 1;
reg.x.cflag = 1;
sreg.es = sreg.ds = FP_SEG(buf);
int86x(0x13, ®, ®, &sreg);
if (!reg.x.cflag) break;
}
set_dpt(old_dpt);
if ( reg.x.cflag ) return translate_int13_error(reg.h.ah);
return DSK_ERR_OK;
}
void main()
{
union REGS regs;
struct SREGS sregs;
DWORD mi_16;
regs.w.ax = 0x0500;
mi_16 = AllocAlias16( &MemInfo );
sregs.ds = 0;
sregs.es = HIWORD( mi_16 );
regs.x.di = LOWORD( mi_16 );
int86x( DPMI_INT, ®s, ®s, &sregs );
printf( "Largest available block (in bytes): %ld\n",
MemInfo.LargestBlockAvail );
printf( "Maximum unlocked page allocation: %lu\n",
MemInfo.MaxUnlockedPage );
printf( "Pages that can be allocated and locked: %lu\n",
MemInfo.LargestLockablePage );
printf( "Total linear address space including allocated"
" pages: %lu\n", MemInfo.LinAddrSpace );
printf( "Number of free pages available: %lu\n",
MemInfo.NumFreePagesAvail );
printf( "Number of physical pages not in use: %lu\n",
MemInfo.NumPhysicalPagesFree );
printf( "Total physical pages managed by host: %lu\n",
MemInfo.TotalPhysicalPages );
printf( "Free linear address space (pages): %lu\n",
MemInfo.FreeLinAddrSpace );
printf( "Size of paging/file partition (pages): %lu\n",
MemInfo.SizeOfPageFile );
FreeAlias16( mi_16 );
}
void NETBIOS (NCB far * ncb_ptr)
{
struct SREGS sregs;
union REGS regs;
sregs.es =FP_SEG(ncb_ptr);
regs.x.bx =FP_OFF(ncb_ptr);
int86x(0x5C,®s,®s,&sregs);
}
static void device_request(void *block)
{
inregs.x.ax = 0x1510;
inregs.x.cx = cdrom_data.first_drive;
inregs.x.bx = FP_OFF(block);
sregs.es = FP_SEG(block);
int86x(0x2f, &inregs, &outregs, &sregs);
}
static void near mouse(int m1,int m2,int m3,int m4)
{
regs.x.dx = m4;
regs.x.cx = m3;
regs.x.bx = m2;
regs.x.ax = m1;
int86x(MOUSE, ®s, ®s, &sregs);
}
//**************** get pointer to system function FUNCNO into SEG:OFS *******
void ps_get_func_ptr(Byte funcno, Word *seg, Word *ofs)
{
union REGS regs; // generic registers
struct SREGS segregs; // segment registers
regs.h.ah = funcno; // put required funcno to AH
int86x(0xFF,®s,®s,&segregs); // do int FFh with regs structures
*seg=segregs.ds; // read segment from DS
*ofs=regs.x.dx; // read offset from DX
}
/* --------------------------------------------------------------------
BlinkRate:
Specifies the graphics cursor blinking rate (Normal blink = 9)
-------------------------------------------------------------------- */
void BlinkRate(int Rate)
{
union REGS regs;
struct SREGS segregs;
regs.x.cx = Rate;
regs.x.ax = 0xdc02;
int86x(0x10, ®s, ®s, &segregs);
}
int MsInitMouse()
{
/* Set mouse style */
union REGS r;
struct SREGS s;
r.x.ax = 0;
int86x(0x33,&r,&r,&s);
/* Set new handler */
r.x.ax = 0x14;
r.x.cx = 0x2 | 0x1; /* push left button */
s.es = FP_SEG(MsFilterProc);
r.x.flags = r.x.cflag = 0; /* CF = 0 */
r.x.dx = FP_OFF(MsFilterProc);
int86x(0x33, &r, &r, &s);
return r.x.ax;
}
void net_delete_name(char *name)
{
memset(&delete_name_ncb,0,sizeof(NCB));
delete_name_ncb.NCB_COMMAND =DELETE_NAME;
strcpy(delete_name_ncb.NCB_NAME,name);
sregs.es=FP_SEG((void far *) &delete_name_ncb);
regs.x.bx =FP_OFF((void far *) &delete_name_ncb);
int86x(0x5c,®s,®s,&sregs);
}
static unsigned doslowblock( void )
{
union REGS regs;
struct SREGS sregs;
regs.h.ah = 0x52;
int86x( DOS, ®s, ®s, &sregs );
return( * (unsigned _WCFAR *) (sregs.es*0x10000 + (regs.x.bx - 2)) + 1 );
}
void MsShowMouse()
{
union REGS r;
struct SREGS s;
r.x.ax = 1;
int86x(0x33, &r, &r, &s);
/* Register Timer Filter */
TmRegisterFilter(MsTimerFilter);
}
void mouseCursor(int *cur)
{
i.x.ax = 9;
i.x.bx = 0;
i.x.cx = 0;
i.x.dx = (unsigned)cur;
segread(&s);
s.es = s.ds;
int86x(0x33,&i,&i,&s);
}
void SetEGAPalette(void)
{
union REGS regs;
struct SREGS sregs;
regs.h.ah = 0x10;
regs.h.al = 0x2;
regs.x.dx = FP_OFF(egacolortable);
sregs.es = FP_SEG(egacolortable);
int86x(0x10,®s,®s,&sregs);
}
change(int *shape)
{
i.x.ax=9;
i.x.bx=0;
i.x.cx=0;
i.x.dx=(unsigned)shape;
segread(&s);
s.es=s.ds;
int86x(0x33,&i,&i,&s);
}
void MOUSE::FormaCursor() {
union REGS r;
struct SREGS s;
r.x.ax = 0x09;
r.x.bx = 7;
r.x.cx = 7;
s.es = FP_SEG (fig);
r.x.dx = FP_OFF (fig);
int86x (0x33,&r, &r, &s );
}
void mudamouse(unsigned segimag,unsigned offimag,unsigned lin,unsigned col)
{
union REGS regs;
struct SREGS sregs;
regs.x.ax=0x09;
regs.x.bx=col;
regs.x.cx=lin;
sregs.es=segimag;
regs.x.dx=offimag;
int86x(0x33,®s,®s,&sregs);
}
void x_map_pal(char *palette) /* namapovani 16 pal.registru */
{
union REGS in,out;
struct SREGS segreg;
in.h.ah = 0x10;
in.h.al = 2;
in.x.dx = FP_OFF(palette);
segreg.es = FP_SEG(palette);
int86x(0x10,&in,&out,&segreg);
}
//initialize the vga palette with data from palette[256][3]
void initpalette(char palette[256][3])
{
REGS regs;
SREGS sregs;
regs.x.ax = 0x1012;
regs.x.bx = 0;
regs.x.cx = 256;
regs.x.dx = FP_OFF(palette);
sregs.es = FP_SEG(palette);
int86x(0x10, ®s, ®s, &sregs);
}