/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                                tty.h
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                                                    Forrest Yu, 2005
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/

#ifndef	_TINIX_TTY_H_
#define	_TINIX_TTY_H_


#define TTY_IN_BYTES	256	/* tty input queue size */

struct s_tty;
struct s_console;

/* TTY */
typedef struct s_tty
{
	t_32	in_buf[TTY_IN_BYTES];	/* TTY 輸入緩沖區(qū) */
	t_32*	p_inbuf_head;		/* 指向緩沖區(qū)中下一個(gè)空閑位置 */
	t_32*	p_inbuf_tail;		/* 指向鍵盤(pán)任務(wù)應(yīng)處理的鍵值 */
	int	inbuf_count;		/* 緩沖區(qū)中已經(jīng)填充了多少 */

	struct s_console *	p_console;
}TTY;


#endif /* _TINIX_TTY_H_ */