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/* --------------- system.h -------------- */
#ifndef SYSTEM_H
#define SYSTEM_H
#if MSC | WATCOM
#include <direct.h>
#else
#include <dir.h>
#endif
#define swap(a,b){int x=a;a=b;b=x;}
/* ----- interrupt vectors ----- */
#define TIMER 8
#define VIDEO 0x10
#define KEYBRD 0x16
#define DOS 0x21
#define CRIT 0x24
#define MOUSE 0x33
#define KEYBOARDVECT 9
/* ------- platform-dependent values ------ */
#define KEYBOARDPORT 0x60
#define FREQUENCY 100
#define COUNT (1193280L / FREQUENCY)
#define ZEROFLAG 0x40
#define MAXSAVES 50
#define SCREENWIDTH (peekb(0x40,0x4a) & 255)
#define SCREENHEIGHT (isVGA() || isEGA() ? peekb(0x40,0x84)+1 : 25)
#define clearBIOSbuffer() *(int far *)(MK_FP(0x40,0x1a)) = \
*(int far *)(MK_FP(0x40,0x1c));
#define waitforkeyboard() while (Xbioskey(1)) (void)Xbioskey(0)
/* ----- keyboard BIOS (0x16) functions -------- */
#define READKB 0
#define KBSTAT 1
/* ------- video BIOS (0x10) functions --------- */
#define SETCURSORTYPE 1
#define SETCURSOR 2
#define READCURSOR 3
#define READATTRCHAR 8
#define WRITEATTRCHAR 9
#define HIDECURSOR 0x20
/* ------- the interrupt function registers -------- */
typedef struct {
int bp,di,si,ds,es,dx,cx,bx,ax,ip,cs,fl;
} IREGS;
/* ---------- keyboard prototypes -------- */
int AltConvert(int);
int getkey(void);
int getshift(void);
BOOL keyhit(void);
void beep(void);
/* ---------- cursor prototypes -------- */
void curr_cursor(int *x, int *y);
void cursor(int x, int y);
void hidecursor(void);
void unhidecursor(void);
void savecursor(void);
void restorecursor(void);
void normalcursor(void);
void set_cursor_type(unsigned t);
void videomode(void);
void SwapCursorStack(void);
/* --------- screen prototpyes -------- */
void clearscreen(void);
/* ---------- mouse prototypes ---------- */
BOOL mouse_installed(void);
int mousebuttons(void);
void get_mouseposition(int *x, int *y);
void set_mouseposition(int x, int y);
void show_mousecursor(void);
void hide_mousecursor(void);
int button_releases(void);
void resetmouse(void);
void set_mousetravel(int, int, int, int);
#define leftbutton() (mousebuttons()&1)
#define rightbutton() (mousebuttons()&2)
#define waitformouse() while(mousebuttons());
/* ------------ timer macros -------------- */
int timed_out(int timer);
void set_timer(int timer, int secs);
void set_timer_ticks(int timer, int ticks);
void disable_timer(int timer);
int timer_running(int timer);
/* void countdown(int timer); -- only used in IRQ handler anyway -- */
int timer_disabled(int timer);
/* ----------- video adaptor prototypes ----------- */
BOOL isEGA(void);
BOOL isVGA(void);
void Set25(void);
void Set43(void);
void Set50(void);
#ifndef BLACK
/* ============= Color Macros ============ */
#define BLACK 0
#define BLUE 1
#define GREEN 2
#define CYAN 3
#define RED 4
#define MAGENTA 5
#define BROWN 6
#define LIGHTGRAY 7
#define DARKGRAY 8
#define LIGHTBLUE 9
#define LIGHTGREEN 10
#define LIGHTCYAN 11
#define LIGHTRED 12
#define LIGHTMAGENTA 13
#define YELLOW 14
#define WHITE 15
#endif
#if MSC | WATCOM
#define keyhit ((kbhit()) ? TRUE : FALSE)
#endif
#if MSC | WATCOM
/* ============= Compatibility Macros ============ */
#define asm __asm
#undef FP_OFF
#undef FP_SEG
#undef MK_FP
#define FP_OFF(p) ((unsigned)(p))
#define FP_SEG(p) ((unsigned)((unsigned long)(p) >> 16))
#define MK_FP(s,o) ((void far *) \
(((unsigned long)(s) << 16) | (unsigned)(o)))
#define findfirst(p,f,a) _dos_findfirst(p,a,f)
#define findnext(f) _dos_findnext(f)
#define ffblk find_t
#define ff_name name
#define ff_fsize size
#define ff_attrib attrib
#define poke(a,b,c) (*((int far*)MK_FP((a),(b))) = (int)(c))
#define pokeb(a,b,c) (*((char far*)MK_FP((a),(b))) = (char)(c))
#define peek(a,b) (*((int far*)MK_FP((a),(b))))
#define peekb(a,b) (*((char far*)MK_FP((a),(b))))
#define getvect(v) _dos_getvect(v)
#define setvect(v,f) _dos_setvect(v,f)
#define fnsplit _splitpath
#define fnmerge _makepath
#define EXTENSION 2
#define FILENAME 4
#define DIRECTORY 8
#define DRIVE 16
int getdisk(void);
#define setdisk(d) _dos_setdrive((d)+1, NULL)
#define bioskey _bios_keybrd
#define MAXPATH 80
#define MAXDRIVE 3
#define MAXDIR 66
#define MAXFILE 9
#define MAXEXT 5
#endif
typedef enum messages {
#ifdef WATCOM
WATCOMFIX1 = -1,
#endif
#undef DFlatMsg
#define DFlatMsg(m) m,
#include "dflatmsg.h"
MESSAGECOUNT
} MESSAGE;
typedef enum window_class {
#ifdef WATCOM
WATCOMFIX2 = -1,
#endif
#define ClassDef(c,b,p,a) c,
#include "classes.h"
CLASSCOUNT
} CLASS;
#endif
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