102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*
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* RoboPlay for MSX
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* Copyright (C) 2020 by RoboSoft Inc.
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*
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* opl4_defines.h
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*
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*/
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#ifndef __OPL4_DEFINES_H
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#define __OPL4_DEFINES_H
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/*
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* Register numbers
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*/
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#define OPL4_REG_TEST0 0x00
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#define OPL4_REG_TEST1 0x01
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#define OPL4_REG_MEMORY_CONFIGURATION 0x02
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#define OPL4_MODE_BIT 0x01
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#define OPL4_MTYPE_BIT 0x02
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#define OPL4_TONE_HEADER_MASK 0x1C
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#define OPL4_DEVICE_ID_MASK 0xE0
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#define OPL4_REG_MEMORY_ADDRESS_HIGH 0x03
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#define OPL4_REG_MEMORY_ADDRESS_MID 0x04
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#define OPL4_REG_MEMORY_ADDRESS_LOW 0x05
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#define OPL4_REG_MEMORY_DATA 0x06
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/*
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* Offsets to the register banks for voices. To get the
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* register number just add the voice number to the bank offset.
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*
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* Wave Table Number low bits (0x08 to 0x1F)
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*/
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#define OPL4_REG_TONE_NUMBER 0x08
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/* Wave Table Number high bit, F-Number low bits (0x20 to 0x37) */
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#define OPL4_REG_F_NUMBER 0x20
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#define OPL4_TONE_NUMBER_BIT8 0x01
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#define OPL4_F_NUMBER_LOW_MASK 0xFE
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/* F-Number high bits, Octave, Pseudo-Reverb (0x38 to 0x4F) */
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#define OPL4_REG_OCTAVE 0x38
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#define OPL4_F_NUMBER_HIGH_MASK 0x07
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#define OPL4_BLOCK_MASK 0xF0
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#define OPL4_PSEUDO_REVERB_BIT 0x08
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/* Total Level, Level Direct (0x50 to 0x67) */
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#define OPL4_REG_LEVEL 0x50
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#define OPL4_TOTAL_LEVEL_MASK 0xFE
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#define OPL4_LEVEL_DIRECT_BIT 0x01
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/* Key On, Damp, LFO RST, CH, Panpot (0x68 to 0x7F) */
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#define OPL4_REG_MISC 0x68
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#define OPL4_KEY_ON_BIT 0x80
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#define OPL4_DAMP_BIT 0x40
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#define OPL4_LFO_RESET_BIT 0x20
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#define OPL4_OUTPUT_CHANNEL_BIT 0x10
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#define OPL4_PAN_POT_MASK 0x0F
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/* LFO, VIB (0x80 to 0x97) */
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#define OPL4_REG_LFO_VIBRATO 0x80
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#define OPL4_LFO_FREQUENCY_MASK 0x38
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#define OPL4_VIBRATO_DEPTH_MASK 0x07
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#define OPL4_CHORUS_SEND_MASK 0xC0
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/* Attack / Decay 1 rate (0x98 to 0xAF) */
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#define OPL4_REG_ATTACK_DECAY1 0x98
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#define OPL4_ATTACK_RATE_MASK 0xF0
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#define OPL4_DECAY1_RATE_MASK 0x0F
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/* Decay level / 2 rate (0xB0 to 0xC7) */
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#define OPL4_REG_LEVEL_DECAY2 0xB0
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#define OPL4_DECAY_LEVEL_MASK 0xF0
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#define OPL4_DECAY2_RATE_MASK 0x0F
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/* Release rate / Rate correction (0xC8 to 0xDF) */
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#define OPL4_REG_RELEASE_CORRECTION 0xC8
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#define OPL4_RELEASE_RATE_MASK 0x0F
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#define OPL4_RATE_INTERPOLATION_MASK 0xF0
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/* AM (0xE0 to 0xF7) */
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#define OPL4_REG_TREMOLO 0xE0
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#define OPL4_TREMOLO_DEPTH_MASK 0x07
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#define OPL4_REVERB_SEND_MASK 0xE0
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/* Mixer */
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#define OPL4_REG_MIX_CONTROL_FM 0xF8
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#define OPL4_REG_MIX_CONTROL_PCM 0xF9
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#define OPL4_MIX_LEFT_MASK 0x07
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#define OPL4_MIX_RIGHT_MASK 0x38
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#define OPL4_REG_ATC 0xFA
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#define OPL4_ATC_BIT 0x01
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/* Bits in the OPL4 Status register */
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#define OPL4_STATUS_BUSY 0x01
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#define OPL4_STATUS_LOAD 0x02
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#endif /* __OPL4_DEFINES_H */
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