* Copyright (c) 1982, 1986, 1990 Regents of the University of California.
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* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
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* may be used to endorse or promote products derived from this software
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* @(#)dcareg.h 7.3 (Berkeley) 5/7/91
volatile u_char dca_irid
;
volatile short dca_ocbrc
;
volatile u_char dca_data
;
volatile u_char dca_iir
; /* read-only */
#define dca_fifo dca_iir /* write-only */
#define DCAIPL(x) ((((x) >> 4) & 3) + 3)
/* 16 bit baud rate divisor (lower byte in dca_data, upper in dca_ier) */
#define DCABRD(x) (153600 / (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 SC9