98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
/* -*- c -*- ------------------------------------------------------------- *
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*
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* Copyright 2004-2005 Murali Krishnan Ganapathy - All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
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* Boston MA 02111-1307, USA; either version 2 of the License, or
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* (at your option) any later version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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#ifndef __COM32IO_H__
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#define __COM32IO_H__
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#include <com32.h>
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#ifndef NULL
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#define NULL ((void *)0)
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#endif
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/* BIOS Assisted output routines */
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void cswprint(const char *str, char attr, char left);
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// Print a C str (NUL-terminated) respecting the left edge of window
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// i.e. \n in str will move cursor to column left
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// Print a C str (NUL-terminated)
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static inline void csprint(const char *str, char attr)
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{
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cswprint(str,attr,0);
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}
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void cprint(char chr,char attr,unsigned int times, char disppage); // Print a char
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void setdisppage(char num); // Set the display page to specified number
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char getdisppage(); // Get current display page
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void gotoxy(char row,char col, char page);
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void getpos(char * row, char * col, char page);
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char inputc(char * scancode); // Return ASCII char by val, and scancode by reference
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static inline void putch(char x, char attr, char page)
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{
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cprint(x,attr,1,page);
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}
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void setcursorshape(char start,char end); // Set cursor shape
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void getcursorshape(char *start,char *end); // Get shape for current page
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// Get char displayed at current position in specified page
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unsigned char getcharat(char page);
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static inline void cursoroff(void) /* Turns off cursor */
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{
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setcursorshape(32,33);
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}
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static inline void cursoron(void) /* Turns on cursor */
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{
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setcursorshape(6,7);
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}
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static inline unsigned char readbiosb(unsigned int ofs)
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{
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return *((unsigned char *)MK_PTR(0,ofs));
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}
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static inline char getnumrows()
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{
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return readbiosb(0x484); // Actually numrows - 1
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}
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static inline char getnumcols(void)
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{
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return readbiosb(0x44a); // Actually numcols
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}
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void scrollup(); //Scroll up display screen by one line
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void setvideomode(char mode); // Set the video mode.
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unsigned char sleep(unsigned int msec); // Sleep for specified time
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void beep(); // A Bell
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unsigned char checkkbdbuf(); // Check to see if there is kbd buffer is non-empty?
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static inline void clearkbdbuf() // Clear the kbd buffer (how many chars removed?)
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{
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while (checkkbdbuf()) inputc(NULL);
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}
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#endif
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