61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/* $NetBSD: ym2149.c,v 1.1 1996/03/27 10:08:32 leo Exp $ */
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/*
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* Copyright (c) 1996 Leo Weppelman.
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* 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 Leo Weppelman.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/iomap.h>
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#include <atari/dev/ym2149reg.h>
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/*
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* Yahama YM-2149 Programmable Sound Generator
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*
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* For now only an init function is here...
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*/
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u_char ym2149_ioa; /* Soft-copy of port-A */
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void
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ym2149_init()
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{
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/*
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* Initialize the sound-chip YM2149:
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* All sounds off, both I/O ports output.
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*/
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YM2149->sd_selr = YM_MFR;
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YM2149->sd_wdat = 0xff;
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/*
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* Sensible value for ioa:
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*/
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YM2149->sd_selr = YM_IOA;
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YM2149->sd_wdat = ym2149_ioa = PA_FDSEL|PA_PSTROBE|PA_SER2;
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}
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