1 /* $NetBSD: cmsreg.h,v 1.4 2008/04/28 20:23:52 martin Exp $ */ 2 3 /* 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #define CMS_NVOICES 12 30 #define CMS_FIRST_NOTE 30 31 32 /* direct registers */ 33 34 #define CMS_DATA0 0x00 /* for chip 0, voices 0-5 */ 35 #define CMS_ADDR0 0x01 36 37 #define CMS_DATA1 0x02 /* for chip 1, voices 6-11 */ 38 #define CMS_ADDR1 0x03 39 40 #define CMS_MREG 0x04 /* always returns 0x7f */ 41 #define CMS_WREG 0x07 /* writable register */ 42 #define CMS_RREG 0x0b /* readable register */ 43 44 #define CMS_IOSIZE 16 45 46 /* 47 * Note that for each register, if ports CMS_DATA1/CMS_ADDR1 are used 48 * then the first voice is modified. If ports CMS_DATA2/CMS_ADDR2 are 49 * used then the second voice is modified. 50 */ 51 52 /* 53 * Each voice can have a volume between 0 and 15 on both left and 54 * right channels. The high-order nibble is the right channel volume, 55 * and the low-order nibble is the left channel volume. 56 */ 57 58 #define CMS_IREG_VOL0 0x00 59 #define CMS_IREG_VOL1 0x01 60 #define CMS_IREG_VOL2 0x02 61 #define CMS_IREG_VOL3 0x03 62 #define CMS_IREG_VOL4 0x04 63 #define CMS_IREG_VOL5 0x05 64 65 /* Frequency registers */ 66 #define CMS_IREG_FREQ0 0x08 67 #define CMS_IREG_FREQ1 0x09 68 #define CMS_IREG_FREQ2 0x0a 69 #define CMS_IREG_FREQ3 0x0b 70 #define CMS_IREG_FREQ4 0x0c 71 #define CMS_IREG_FREQ5 0x0d 72 73 /* 74 * Octave Registers: To get tones in higher octaves the octave 75 * register for the voice must be set. Each octave register stores 76 * the octave number for two voices. The high-order nibble is for 77 * first voice and the low-order nibble is for the second voice. 78 */ 79 80 #define CMS_IREG_OCTAVE_1_0 0x10 81 #define CMS_IREG_OCTAVE_3_2 0x11 82 #define CMS_IREG_OCTAVE_5_4 0x12 83 84 #define CMS_IREG_FREQ_CTL 0x14 /* voice frequencies */ 85 #define CMS_IREG_FREQ_ENBL0 0x01 /* setting the bit enables the voice */ 86 #define CMS_IREG_FREQ_ENBL1 0x02 /* clearing the bit disables the voice */ 87 #define CMS_IREG_FREQ_ENBL2 0x04 88 #define CMS_IREG_FREQ_ENBL3 0x08 89 #define CMS_IREG_FREQ_ENBL4 0x10 90 #define CMS_IREG_FREQ_ENBL5 0x20 91 92 /* 93 * There are 4 noise generators, each noise generator can be connected 94 * up to any of three voices: 95 * 96 * Noise generator 0: connected to voices 0,1,2 97 * 1: connected to voices 3,4,5 98 * 2: connected to voices 6,7,8 99 * 3: connected to voices 0,10,11 100 * 101 * CMS_DATA1/CMS_ADDR1 access noise generators 0 and 1. Each noise 102 * generator has two bits which control the noise generator rate. 103 */ 104 105 #define CMS_IREG_NOISE_CTL 0x15 /* noises */ 106 #define CMS_IREG_NOISE_ENBL0 0x01 107 #define CMS_IREG_NOISE_ENBL1 0x02 108 #define CMS_IREG_NOISE_ENBL2 0x04 109 #define CMS_IREG_NOISE_ENBL3 0x08 110 #define CMS_IREG_NOISE_ENBL4 0x10 111 #define CMS_IREG_NOISE_ENBL5 0x20 112 113 #define CMS_IREG_NOISE_BW 0x16 114 #define CMS_IREG_NOISE_MASK0 0x03 /* bits for noise generator 0 */ 115 #define CMS_IREG_NOISE_MASK1 0x30 /* bits for noise generator 1 */ 116 /* the bits in the mask have the following meaning */ 117 #define CMS_IREG_NOISE_MASK_28k 0 /* 28kHz */ 118 #define CMS_IREG_NOISE_MASK_14k 1 /* 14kHz */ 119 #define CMS_IREG_NOISE_MASK_7k 2 /* 6.8kHz */ 120 121 #define CMS_IREG_SYS_CTL 0x1c 122 #define CMS_IREG_SYS_ENBL 0x01 /* enable all channels */ 123 #define CMS_IREG_SYS_RESET 0x02 /* reset and synchronise generators */ 124 125 126 /* 127 * Some useful macros 128 */ 129 130 #define CMS_WRITE(sc, chip, reg, val) \ 131 do { \ 132 (sc)->sc_shadowregs[((chip)<<5) + (reg)] = val; \ 133 bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, \ 134 CMS_ADDR0 + ((chip)<<1), (reg)); \ 135 bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, \ 136 CMS_DATA0 + ((chip)<<1), (val)); \ 137 } while (0) 138 139 #define CMS_READ(sc, chip, reg) ((sc)->sc_shadowregs[((chip)<<5) + (reg)]) 140 141 #define CHAN_TO_CHIP(chan) ((chan)>5) 142 #define CHAN_TO_VOICE(chan) ((chan)%6) 143 #define OCTAVE_OFFSET(voice) ((voice)>>1) 144 #define OCTAVE_SHIFT(voice) (((voice)&1)<<2) 145
Indexes created Sat Sep 20 22:09:52 GMT 2025