* Copyright (c) 1991 The Regents of the University of California.
* %sccs.include.redist.c%
* @(#)comreg.h 7.2 (Berkeley) %G%
/* 16 bit baud rate divisor (lower byte in dca_data, upper in dca_ier) */
#define COMBRD(x) (1843200 / (16*(x)))
/* interrupt enable register */
/* interrupt identification register */
#define IIR_FIFO_MASK 0xc0 /* set if FIFOs are enabled */
/* fifo control register */
#define FIFO_RCV_RST 0x02
#define FIFO_XMT_RST 0x04
#define FIFO_DMA_MODE 0x08
#define FIFO_TRIGGER_1 0x00
#define FIFO_TRIGGER_4 0x40
#define FIFO_TRIGGER_8 0x80
#define FIFO_TRIGGER_14 0xc0
/* character format control register */
/* modem control register */
#define MCR_LOOPBACK 0x10
/* line status register */
#define LSR_RCV_FIFO 0x80
#define LSR_RCV_MASK 0x1f
/* modem status register */
* WARNING: Serial console is assumed to be at COM1 address