83 lines
3.2 KiB
C
83 lines
3.2 KiB
C
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/* $NetBSD: dlreg.h,v 1.1 1997/02/04 19:13:19 ragge Exp $ */
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/*
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* Copyright (c) 1997 Ben Harris. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Ben Harris.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* dlreg.h -- Definitions for the DL11 and DLV11 serial cards.
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*
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* Style in imitation of dzreg.h.
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*/
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union w_b
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{
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u_short word;
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struct {
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u_char byte_lo;
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u_char byte_hi;
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} bytes;
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};
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struct DLregs
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{
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volatile u_short dl_rcsr; /* Receive Control/Status Register (R/W) */
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volatile u_short dl_rbuf; /* Receive Buffer (R) */
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volatile u_short dl_xcsr; /* Transmit Control/Status Register (R/W) */
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volatile union w_b u_xbuf; /* Transmit Buffer (W) */
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#define dl_xbuf u_xbuf.bytes.byte_lo
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};
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typedef struct DLregs dlregs;
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/* RCSR bits */
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#define DL_RCSR_RX_DONE 0x0080 /* Receiver Done (R) */
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#define DL_RCSR_RXIE 0x0040 /* Receiver Interrupt Enable (R/W) */
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#define DL_RCSR_READER_ENABLE 0x0001 /* [paper-tape] Reader Enable (W) */
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#define DL_RCSR_BITS "\20\1READER_ENABLE\7RXIE\10RX_DONE\n"
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/* RBUF bits */
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#define DL_RBUF_ERR 0x8000 /* Error (R) */
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#define DL_RBUF_OVERRUN_ERR 0x4000 /* Overrun Error (R) */
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#define DL_RBUF_FRAMING_ERR 0x2000 /* Framing Error (R) */
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#define DL_RBUF_PARITY_ERR 0x1000 /* Parity Error (R) */
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#define DL_RBUF_DATA_MASK 0x00FF /* Receive Data (R) */
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#define DL_RBUF_BITS "\20\15PARITY_ERR\16FRAMING_ERR\17OVERRUN_ERR\20ERR\n"
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/* XCSR bits */
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#define DL_XCSR_TX_READY 0x0080 /* Transmitter Ready (R) */
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#define DL_XCSR_TXIE 0x0040 /* Transmit Interrupt Enable (R/W) */
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#define DL_XCSR_TX_BREAK 0x0001 /* Transmit Break (R/W) */
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#define DL_XCSR_BITS "\20\1TX_BREAK\7TXIE\10TX_READY\n"
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/* XBUF is just data byte right justified. */
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