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- /* bios.h 1990 Dave Newman IBM Bios package */
- #ifndef bios_h
- #define bios_h
-
- /* see note at bottom for need of use */
- void bios_open(void);
-
- /* currently just returns (does nothing) */
- void bios_close(void);
-
- /* get video mode (value same as cur_mode)
- if bios_open() was called */
- int bios_mode(void);
-
- /* scroll active page down */
- void bios_scroll_dn(int,int,int,int,int);
-
- /* scroll active page up */
- void bios_scroll_up(int,int,int,int,int);
-
- /* set cursor type */
- void bios_cursor(int);
-
- /* move cursor to row/col */
- void bios_move(int,int);
-
- /* return current cursor location */
- void bios_rc(void);
-
- /* put char at cursor */
- void bios_putchar(char);
-
- /* put char with attribute */
- void bios_pchatt(char);
-
- /* put string at cursor */
- void bios_puts(char *);
-
- /* read char at cursor */
- char bios_rdchar(void);
-
- /* read char and attribute at cursor */
- int bios_rdchatt(void);
-
- /* adapter types */
- extern char
- cga, /* color graphics adapter */
- ega, /* Enhanced graphics adapter */
- vga, /* video graphics array */
- mcga, /* PS/2 mcga display */
- mono, /* just black and white */
- herc, /* hercules graphics adapter */
- none; /* no monitor at all (or unknown) */
-
- extern char /* these are set even if none == 1 */
- color, /* is is using a color monitor */
- b_w; /* or black+white? */
-
- /* these vars hold information about the system.
- They are valid after the call to bios_open().
- If the information in them is not relevant,
- the call to bios_open() is not necessary. */
- extern int cur_mode;
- extern int cur_page;
- extern int num_cols;
-
- /* these vars hold info about the cursor position
- and the current color/attribute being used.
- (no bios_open call necessary) */
-
- /* display attribute */
- extern unsigned char cur_attr;
-
- /* current row of cursor */
- extern int cur_row;
-
- /* current column of cursor */
- extern int cur_col;
-
- /* clear text mode 80x25 screen */
- #define cls()
- bios_scroll_dn(25,0,0,24,79);bios_move(0,0)
-
- #endif
- /* end bios.h */
-
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