51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* $NetBSD: i8253.h,v 1.2 2003/12/04 16:23:36 drochner Exp $ */
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/* Copyright (c) 1995 Vixie Enterprises
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies, and that
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* the name of Vixie Enterprises not be used in advertising or publicity
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* pertaining to distribution of the document or software without specific,
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* written prior permission.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND VIXIE ENTERPRISES DISCLAIMS ALL
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* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL VIXIE ENTERPRISES
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* BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#ifndef _I8253_DEFINED
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#define _I8253_DEFINED
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typedef union {
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unsigned char i;
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struct {
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unsigned int bcd : 1;
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#define i8253_binary 0
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#define i8253_bcd 1
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unsigned int mode : 3;
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#define i8253_termcnt 0
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#define i8253_oneshot 1
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#define i8253_rategen 2
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#define i8253_sqrwave 3
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#define i8253_softstb 4
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#define i8253_hardstb 5
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unsigned int rl : 2;
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#define i8253_latch 0
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#define i8253_lsb 1
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#define i8253_msb 2
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#define i8253_lmb 3
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unsigned int cntr : 2;
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#define i8253_cntr_0 0
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#define i8253_cntr_1 1
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#define i8253_cntr_2 2
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} s;
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} i8253_ctrl;
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#endif /*_I8253_DEFINED*/
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