189 lines
4.6 KiB
C
189 lines
4.6 KiB
C
/* $NetBSD: opm.c,v 1.2 1996/05/21 15:32:34 oki Exp $ */
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/*
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* Copyright (c) 1995 Masanobu Saitoh, Takuya Harakawa.
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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 Masanobu Saitoh.
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* 4. Neither the name of the University nor of the Laboratory may be used
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* to endorse or promote products derived from this software without
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* 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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#include "fd.h"
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/*#include "bsdaudio.h"*/
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#include "bell.h"
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#if ((NBSDAUDIO > 0) || (NFD > 0) || (NBELL > 0))
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <x68k/dev/opmreg.h>
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#include <x68k/dev/bsd_audioreg.h>
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#include <x68k/x68k/iodevice.h>
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static u_char opmreg[0x100];
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static struct opm_voice vdata[8];
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void opm_set_voice(int, struct opm_voice *);
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void opm_set_voice_sub(int, struct opm_operator *);
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static inline void
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writeopm(reg, dat)
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int reg, dat;
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{
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while (OPM.data & 0x80);
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OPM.reg = reg;
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while (OPM.data & 0x80);
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OPM.data = opmreg[reg] = dat;
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}
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static inline int
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readopm(reg)
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int reg;
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{
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return opmreg[reg];
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}
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void
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adpcm_chgclk(clk)
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u_char clk;
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{
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writeopm(0x1b, readopm(0x1b) & ~OPM1B_CT1MSK | clk);
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}
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void
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fdc_force_ready(rdy)
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u_char rdy;
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{
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writeopm(0x1b, readopm(0x1b) & ~OPM1B_CT2MSK | rdy);
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}
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void
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opm_key_on(channel)
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u_char channel;
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{
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writeopm(0x08, vdata[channel].sm << 3 | channel);
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}
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void
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opm_key_off(channel)
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u_char channel;
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{
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writeopm(0x08, channel);
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}
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void
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opm_set_voice(channel, voice)
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int channel;
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struct opm_voice *voice;
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{
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bcopy(voice, &vdata[channel], sizeof(struct opm_voice));
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opm_set_voice_sub(0x40 + channel, &voice->m1);
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opm_set_voice_sub(0x48 + channel, &voice->m2);
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opm_set_voice_sub(0x50 + channel, &voice->c1);
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opm_set_voice_sub(0x58 + channel, &voice->c2);
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writeopm(0x20 + channel, 0xc0 | (voice->fb & 0x7) << 3 | (voice->con & 0x7));
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}
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void
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opm_set_voice_sub(reg, op)
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register int reg;
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struct opm_operator *op;
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{
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/* DT1/MUL */
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writeopm(reg, (op->dt1 & 0x7) << 3 | (op->mul & 0x7));
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/* TL */
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writeopm(reg + 0x20, op->tl & 0x7f);
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/* KS/AR */
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writeopm(reg + 0x40, (op->ks & 0x3) << 6 | (op->ar & 0x1f));
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/* AMS/D1R */
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writeopm(reg + 0x60, (op->ame & 0x1) << 7 | (op->d1r & 0x1f));
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/* DT2/D2R */
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writeopm(reg + 0x80, (op->dt2 & 0x3) << 6 | (op->d2r & 0x1f));
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/* D1L/RR */
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writeopm(reg + 0xa0, (op->d1l & 0xf) << 4 | (op->rr & 0xf));
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}
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void
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opm_set_volume(channel, volume)
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int channel;
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int volume;
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{
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int value;
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switch (vdata[channel].con) {
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case 7:
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value = vdata[channel].m1.tl + volume;
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writeopm(0x60 + channel, ((value > 0x7f) ? 0x7f : value));
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case 6:
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case 5:
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value = vdata[channel].m2.tl + volume;
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writeopm(0x68 + channel, ((value > 0x7f) ? 0x7f : value));
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case 4:
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value = vdata[channel].c1.tl + volume;
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writeopm(0x70 + channel, ((value > 0x7f) ? 0x7f : value));
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case 3:
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case 2:
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case 1:
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case 0:
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value = vdata[channel].c2.tl + volume;
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writeopm(0x78 + channel, ((value > 0x7f) ? 0x7f : value));
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}
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}
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void
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opm_set_key(channel, tone)
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int channel;
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int tone;
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{
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writeopm(0x28 + channel, tone >> 8);
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writeopm(0x30 + channel, tone & 0xff);
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}
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/*ARGSUSED*/
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int
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opmopen(dev, flag, mode)
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dev_t dev;
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{
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return 0;
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}
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/*ARGSUSED*/
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int
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opmclose(dev)
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dev_t dev;
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{
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return 0;
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}
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#endif
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