/*
 * Character I/O
 */

/*
 * print a string
 */

#include "boot.h"

extern putchar ();


prs (a)
	char *a;
	{
	for (; *a; a++)
		{
		if (*a == '\n')
			putchar ('\r');

		putchar (*a);
		}
	}

/*
 * Run a single command on a disk controller
 */

run (state, status)
	char *state, *status;
	{
	*status = BUSY;

	*state = ACTIVE;

	wait (status);
	}

/*
 * wait for a contoller status to change
 */

#define TIME 170000

wait (a)
	char *a;
	{
	long t;

	for (t = TIME; t; t--)
		if (*a != BUSY)
			break;
	}