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/*
** Macros for managing direct video writes by Jerry Houston
**
** prototypes for SCROLL.C and VIDPORT.C functions added by Bob Stout
*/
#if defined(__TURBOC__)
#define FAR far
#else
#define FAR _far
#endif
#ifndef MK_FP
#define MK_FP(seg,off) ((void far *)(((long)(seg) << 16)|(unsigned)(off)))
#endif
/*
** Text screen scrolling function from SCROLL.C in SNIPPETS
*/
#define SCROLL_UP 0
#define SCROLL_DN 1
void scroll(int direction,
int num_lines,
int vattrib,
int ulrow,
int ulcomumn,
int lrrow,
int lrcolumn);
/*
** Functions in VIDPORT.C in SNIPPETS
*/
void GotoXY(int col, int row);
void ClrScrn(int vattrib);
void GetCurPos(int *col, int *row);
int GetCurAtr(void);
void ClrEol(void);
void ClrEop(void);
void Repaint(int vattrib);
#if !defined(COLORMODE)
#define COLORMODE ((*(char FAR *)0x0449) != 7)
#define EXT_KBD (*(char FAR *)0x0496 & 16)
#define VIDPAGE (*((unsigned char far *)0x0462))
#define ROWSIZE (*(int FAR *)0x044A)
#define SCANLINES ((int)*(char FAR*)0x0461)
#define SCRBUFF ((unsigned FAR *)((COLORMODE)?0xB8000000:0xB0000000))
#define SCREENSEG ((unsigned)((COLORMODE)?0xB800:0xB000))
#define SCREENSIZE ((*(int FAR *)0x044C) >> 1)
#define SCREENCOLS (*(int FAR *)0x044A)
#define SCREENROWS ((*(char FAR *)0x0484)?1+(*(char FAR *)0x0484):25)
#endif
/*
COLORMODE = true/false, are we using color?
EXT_KBD = true/false, extended keyboard in use?
VIDPAGE = current video page in use
SCANLINES = number of scan lines in a character.
SCRBUFF = returns B800:0000 if using color, B000:0000 if mono.
SCREENSEG = when you just need the segment portion.
SCREENSIZE = number of (2-byte) cells required to save screen.
SCREENCOLS = number of columns, often 80.
SCREENROWS = number of rows, usually defaults to 25.
*/
/*
** colors -- Use as is for foreground colors
** For background, shift left by 4 and OR with
** foreground and possible video attributes
*/
#define BLACK 0
#define BLUE 1
#define GREEN 2
#define CYAN 3
#define RED 4
#define MAGENTA 5
#define BROWN 6
#define WHITE 7
#define GRAY 8
#define LTBLUE 9
#define LTGREEN 10
#define LTCYAN 11
#define LTRED 12
#define LTMAGENTA 13
#define YELLOW 14
#define HIWHITE 15 /* hi-intensity white */
#define BG_(a) (((a) & 0x7f) << 4)
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