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Diffstat (limited to 'src/devices/sound/meg.h')
-rw-r--r-- | src/devices/sound/meg.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/devices/sound/meg.h b/src/devices/sound/meg.h new file mode 100644 index 00000000000..e9ff44f990a --- /dev/null +++ b/src/devices/sound/meg.h @@ -0,0 +1,122 @@ +// license:BSD-3-Clause +// copyright-holders:Olivier Galibert + +// Yamaha MEG - Multiple effects generator +// +// Audio dsp dedicated to effects generation + +#ifndef DEVICES_SOUND_MEG_H +#define DEVICES_SOUND_MEG_H + +#pragma once + +#include "megd.h" + + +class meg_base_device : public cpu_device, public meg_disassembler::info +{ +public: + enum { + AS_FP = 1, + AS_OFFSETS = 2 + }; + + meg_base_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, u32 prg_size); + + void prg_w(u16 address, u64 opcode); + void fp_w(u16 address, u16 value); + void offset_w(u16 address, u16 value); + void lfo_w(u8 reg, u16 value); + void map_w(u8 reg, u16 value); + u64 prg_r(u16 address) const; + virtual u16 fp_r(u16 address) const override; + virtual u16 offset_r(u16 address) const override; + u16 lfo_r(u8 reg) const; + u16 map_r(u8 reg) const; + +protected: + virtual void device_start() override; + virtual void device_reset() override; + virtual uint32_t execute_min_cycles() const override; + virtual uint32_t execute_max_cycles() const override; + virtual uint32_t execute_input_lines() const override; + virtual void execute_run() override; + virtual space_config_vector memory_space_config() const override; + virtual void state_import(const device_state_entry &entry) override; + virtual void state_export(const device_state_entry &entry) override; + virtual void state_string_export(const device_state_entry &entry, std::string &str) const override; + virtual std::unique_ptr<util::disasm_interface> create_disassembler() override; + +private: + address_space_config m_program_config, m_fp_config, m_offsets_config; + address_space *m_program, *m_fp, *m_offsets; + + u32 m_prg_size, m_pc; + int m_icount; + + u16 m_lfo[0x18], m_map[8]; + + void prg_map(address_map &map); + void fp_map(address_map &map); + void offsets_map(address_map &map); +}; + +class meg_embedded_device : public meg_base_device +{ +public: + meg_embedded_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 44100*384); +}; + +class meg_device : public meg_base_device +{ +public: + meg_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 44100*256); + void map(address_map &map); + +private: + u8 m_r4[256]; + u8 m_r5[256]; + u8 m_r8[256]; + u8 m_r9[256]; + u8 m_re[256]; + u8 m_rf[256]; + u8 m_r12[256]; + u8 m_r13[256]; + u8 m_r14[256]; + u8 m_r16[256]; + u8 m_r17[256]; + u8 m_r18[256]; + u8 m_reg; + u8 s2_r(); + u8 s10_r(); + u8 s11_r(); + void select_w(u8 reg); + void s1_w(u8 data); + void s2_w(u8 data); + void s3_w(u8 data); + void s4_w(u8 data); + void s5_w(u8 data); + void s7_w(u8 data); + void s8_w(u8 data); + void s9_w(u8 data); + void sa_w(u8 data); + void fph_w(u8 data); + void fpl_w(u8 data); + void se_w(u8 data); + void sf_w(u8 data); + void s10_w(u8 data); + void s11_w(u8 data); + void offseth_w(u8 data); + void offsetl_w(u8 data); + void s14_w(u8 data); + void s15_w(u8 data); + void s16_w(u8 data); + void s17_w(u8 data); + void s18_w(u8 data); +}; + + +DECLARE_DEVICE_TYPE(MEG, meg_device) +DECLARE_DEVICE_TYPE(MEGEMB, meg_embedded_device) + +#endif |