204 lines
5.9 KiB
C
204 lines
5.9 KiB
C
/* $NetBSD: oplreg.h,v 1.1 1998/08/17 21:16:13 augustss Exp $ */
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/*
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* Author: Lennart Augustsson
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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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Offsets from base address */
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#define OPL_LO 0
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#define OPL_HI 2
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/* Offsets from base+[LO|HI] */
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#define OPL_STATUS 0
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#define OPL_STATUS_IRQ 0x80
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#define OPL_STATUS_FT1 0x40
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#define OPL_STATUS_FT2 0x20
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#define OPL_STATUS_MASK 0xE0
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#define OPL_ADDR 0
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#define OPL_DATA 1
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#define OPL_TEST 0x01
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#define OPL_ENABLE_WAVE_SELECT 0x20
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#define OPL_TIMER1 0x02
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#define OPL_TIMER2 0x03
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#define OPL_TIMER_CONTROL 0x04 /* LO */
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#define OPL_TIMER1_START 0x01
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#define OPL_TIMER2_START 0x02
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#define OPL_TIMER2_MASK 0x20
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#define OPL_TIMER1_MASK 0x40
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#define OPL_IRQ_RESET 0x80
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#define OPL_CONNECTION_SELECT 0x04 /* HI */
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#define OPL_NOCONNECTION 0x00
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#define OPL_HI_4OP_0 0x01
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#define OPL_HI_4OP_1 0x02
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#define OPL_HI_4OP_2 0x04
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#define OPL_LO_4OP_0 0x08
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#define OPL_LO_4OP_1 0x10
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#define OPL_LO_4OP_2 0x20
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#define OPL_MODE 0x05 /* HI */
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#define OPL3_ENABLE 0x01
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#define OPL4_ENABLE 0x02
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#define OPL_KBD_SPLIT 0x08 /* LO */
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#define OPL_KEYBOARD_SPLIT 0x40
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#define OPL_COMPOSITE_SINE_WAVE_MODE 0x80
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#define OPL_PERCUSSION 0xbd /* LO */
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#define OPL_NOPERCUSSION 0x00
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#define OPL_HIHAT 0x01
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#define OPL_CYMBAL 0x02
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#define OPL_TOMTOM 0x04
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#define OPL_SNAREDRUM 0x08
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#define OPL_BASSDRUM 0x10
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#define OPL_PERCUSSION_ENABLE 0x20
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#define OPL_VIBRATO_DEPTH 0x40
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#define OPL_TREMOLO_DEPTH 0x80
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/*
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* Offsets to the register banks for operators. To get the
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* register number just add the operator offset to the bank offset
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*
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* AM/VIB/EG/KSR/Multiple (0x20 to 0x35)
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*/
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#define OPL_AM_VIB 0x20
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#define OPL_KSR 0x10
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#define OPL_SUSTAIN 0x20
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#define OPL_VIBRATO 0x40
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#define OPL_TREMOLO 0x80
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#define OPL_MULTIPLE_MASK 0x0f
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/*
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* KSL/Total level (0x40 to 0x55)
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*/
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#define OPL_KSL_LEVEL 0x40
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#define OPL_KSL_MASK 0xc0 /* Envelope scaling bits */
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#define OPL_TOTAL_LEVEL_MASK 0x3f /* Strength (volume) of OP */
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/*
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* Attack / Decay rate (0x60 to 0x75)
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*/
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#define OPL_ATTACK_DECAY 0x60
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#define OPL_ATTACK_MASK 0xf0
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#define DECAY_MASK 0x0f
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/*
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* Sustain level / Release rate (0x80 to 0x95)
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*/
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#define OPL_SUSTAIN_RELEASE 0x80
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#define OPL_SUSTAIN_MASK 0xf0
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#define OPL_RELEASE_MASK 0x0f
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/*
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* Wave select (0xE0 to 0xF5)
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*/
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#define OPL_WAVE_SELECT 0xe0
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#define OPL_MAXREG 0xf5
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/*
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* Offsets to the register banks for voices. Just add to the
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* voice number to get the register number.
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*
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* F-Number low bits (0xA0 to 0xA8).
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*/
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#define OPL_FNUM_LOW 0xa0
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/*
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* F-number high bits / Key on / Block (octave) (0xB0 to 0xB8)
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*/
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#define OPL_KEYON_BLOCK 0xb0
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#define OPL_KEYON_BIT 0x20
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#define OPL_BLOCKNUM_MASK 0x1c
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#define OPL_FNUM_HIGH_MASK 0x03
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/*
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* Feedback / Connection (0xc0 to 0xc8)
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*
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* These registers have two new bits when the OPL-3 mode
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* is selected. These bits controls connecting the voice
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* to the stereo channels. For 4 OP voices this bit is
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* defined in the second half of the voice (add 3 to the
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* register offset).
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*
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* For 4 OP voices the connection bit is used in the
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* both halves (gives 4 ways to connect the operators).
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*/
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#define OPL_FEEDBACK_CONNECTION 0xc0
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#define OPL_FEEDBACK_MASK 0x0e /* Valid just for 1st OP of a voice */
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#define OPL_CONNECTION_BIT 0x01
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/*
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* In the 4 OP mode there is four possible configurations how the
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* operators can be connected together (in 2 OP modes there is just
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* AM or FM). The 4 OP connection mode is defined by the rightmost
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* bit of the FEEDBACK_CONNECTION (0xC0-0xC8) on the both halves.
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*
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* First half Second half Mode
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*
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* +---+
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* v |
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* 0 0 >+-1-+--2--3--4-->
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*
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*
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*
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* +---+
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* | |
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* 0 1 >+-1-+--2-+
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* |->
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* >--3----4-+
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*
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* +---+
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* | |
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* 1 0 >+-1-+-----+
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* |->
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* >--2--3--4-+
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*
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* +---+
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* | |
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* 1 1 >+-1-+--+
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* |
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* >--2--3-+->
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* |
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* >--4----+
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*/
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#define OPL_STEREO_BITS 0x30 /* OPL-3 only */
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#define OPL_VOICE_TO_LEFT 0x10
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#define OPL_VOICE_TO_RIGHT 0x20
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#define OPL2_NVOICE 9
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#define OPL3_NVOICE 18
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