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/* -*- c -*- ------------------------------------------------------------- *
 *
 *   Copyright 2004-2005 Murali Krishnan Ganapathy - All Rights Reserved
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
 *   Boston MA 02111-1307, USA; either version 2 of the License, or
 *   (at your option) any later version; incorporated herein by reference.
 *
 * ----------------------------------------------------------------------- */

#ifndef __COM32IO_H__
#define __COM32IO_H__

#include <com32.h>
#include <stdio.h>
#include <libansi.h>

#ifndef NULL
#define NULL ((void *)0)
#endif

/* BIOS Assisted output routines */

void getpos(char *row, char *col, char page);

char inputc(char *scancode);	// Return ASCII char by val, and scancode by reference

void setcursorshape(char start, char end);	// Set cursor shape
void getcursorshape(char *start, char *end);	// Get shape for current page

// Get char displayed at current position in specified page
unsigned char getcharat(char page);

static inline unsigned char readbiosb(unsigned int ofs)
{
    return *((unsigned char *)MK_PTR(0, ofs));
}

static inline char getshiftflags(void)
{
    return readbiosb(0x417);
}

void scrollupwindow(char top, char left, char bot, char right, char attr, char numlines);	//Scroll up given window

void setvideomode(char mode);	// Set the video mode.

static inline char getvideomode(void)	// Get the current video mode
{
    return readbiosb(0x449);
}

unsigned char sleep(unsigned int msec);	// Sleep for specified time

unsigned char checkkbdbuf();	// Check to see if there is kbd buffer is non-empty?

static inline void clearkbdbuf()	// Clear the kbd buffer (how many chars removed?)
{
    while (checkkbdbuf())
	inputc(NULL);
}

#endif