mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-15 17:25:06 +00:00
Merge branch 'cam900-vrc6'
This commit is contained in:
tildearrow
commit
56786d96d1
17 changed files with 1234 additions and 3 deletions
|
|
@ -277,6 +277,8 @@ src/engine/platform/sound/n163/n163.cpp
|
|||
|
||||
src/engine/platform/sound/vic20sound.c
|
||||
|
||||
src/engine/platform/sound/vrcvi/vrcvi.cpp
|
||||
|
||||
src/engine/platform/ym2610Interface.cpp
|
||||
|
||||
src/engine/blip_buf.c
|
||||
|
|
@ -327,6 +329,7 @@ src/engine/platform/bubsyswsg.cpp
|
|||
src/engine/platform/n163.cpp
|
||||
src/engine/platform/pet.cpp
|
||||
src/engine/platform/vic20.cpp
|
||||
src/engine/platform/vrc6.cpp
|
||||
src/engine/platform/dummy.cpp
|
||||
)
|
||||
|
||||
|
|
|
|||
|
|
@ -28,6 +28,7 @@ depending on the instrument type, there are currently 13 different types of an i
|
|||
- [Seta/Allumer X1-010](x1_010.md) - for use with Wavetable portion in Seta/Allumer X1-010.
|
||||
- [Konami SCC/Bubble System WSG](scc.md) - for use with Konami SCC and Wavetable portion in Bubble System's sound hardware.
|
||||
- [Namco 163](n163.md) - for use with Namco 163.
|
||||
- [Konami VRC6](vrc6.md) - for use with VRC6's PSG sound source.
|
||||
|
||||
# macros
|
||||
|
||||
|
|
|
|||
7
papers/doc/4-instrument/vrc6.md
Normal file
7
papers/doc/4-instrument/vrc6.md
Normal file
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|
@ -0,0 +1,7 @@
|
|||
# VRC6 instrument editor
|
||||
|
||||
VRC6 instrument editor consists of only three macros:
|
||||
|
||||
- [Volume] - volume sequence
|
||||
- [Arpeggio] - pitch sequence
|
||||
- [Duty cycle] - specifies duty cycle for pulse wave channels
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||||
|
|
@ -29,5 +29,6 @@ this is a list of systems that Furnace supports, including each system's effects
|
|||
- [PC Speaker](pcspkr.md)
|
||||
- [Commodore PET](pet.md)
|
||||
- [Commodore VIC-20](vic20.md)
|
||||
- [Konami VRC6](vrc6.md)
|
||||
|
||||
Furnace also reads .dmf files with the [Yamaha YMU759](ymu759.md) system, but...
|
||||
|
|
|
|||
16
papers/doc/7-systems/vrc6.md
Normal file
16
papers/doc/7-systems/vrc6.md
Normal file
|
|
@ -0,0 +1,16 @@
|
|||
# Konami VRC6
|
||||
|
||||
the most popular expansion chip to the NES' sound system.
|
||||
|
||||
the chip has 2 pulse wave channels and one sawtooth channel.
|
||||
volume register is 4 bit for pulse wave and 6 bit for sawtooth, but sawtooth output is corrupted when volume register value is too high. because this register is actually an 8 bit accumulator, its output may wrap around.
|
||||
|
||||
pulse wave duty cycle is 8-level. it can be ignored and it has potential for DAC at this case: volume register in this mode is DAC output and it can be PCM playback through this mode.
|
||||
Furnace supports this routine for PCM playback, but it consumes a lot of CPU time in real hardware (even if conjunction with VRC6's integrated IRQ timer).
|
||||
|
||||
# effects
|
||||
|
||||
these effects only are effective in the pulse channels.
|
||||
|
||||
- `12xx`: set duty cycle (0 to 7).
|
||||
- `17xx`: toggle PCM mode.
|
||||
|
|
@ -49,6 +49,7 @@
|
|||
#include "platform/n163.h"
|
||||
#include "platform/pet.h"
|
||||
#include "platform/vic20.h"
|
||||
#include "platform/vrc6.h"
|
||||
#include "platform/dummy.h"
|
||||
#include "../ta-log.h"
|
||||
#include "song.h"
|
||||
|
|
@ -287,6 +288,9 @@ void DivDispatchContainer::init(DivSystem sys, DivEngine* eng, int chanCount, do
|
|||
case DIV_SYSTEM_VIC20:
|
||||
dispatch=new DivPlatformVIC20;
|
||||
break;
|
||||
case DIV_SYSTEM_VRC6:
|
||||
dispatch=new DivPlatformVRC6;
|
||||
break;
|
||||
default:
|
||||
logW("this system is not supported yet! using dummy platform.\n");
|
||||
dispatch=new DivPlatformDummy;
|
||||
|
|
|
|||
313
src/engine/platform/sound/vrcvi/vrcvi.cpp
Normal file
313
src/engine/platform/sound/vrcvi/vrcvi.cpp
Normal file
|
|
@ -0,0 +1,313 @@
|
|||
/*
|
||||
License: BSD-3-Clause
|
||||
see https://github.com/cam900/vgsound_emu/LICENSE for more details
|
||||
|
||||
Copyright holder(s): cam900
|
||||
Konami VRC VI sound emulation core
|
||||
|
||||
It's one of NES mapper with built-in sound chip, and also one of 2 Konami VRCs with this feature. (rest one has OPLL derivatives.)
|
||||
|
||||
It's also DACless like other sound chip and mapper-with-sound manufactured by konami,
|
||||
the Chips 6 bit digital sound output is needs converted to analog sound output when you it want to make some sounds, or send to sound mixer.
|
||||
|
||||
Its are used for Akumajou Densetsu (Japan release of Castlevania III), Madara, Esper Dream 2.
|
||||
|
||||
The chip is installed in 351951 PCB and 351949A PCB.
|
||||
|
||||
351951 PCB is used exclusivly for Akumajou Densetsu, Small board has VRC VI, PRG and CHR ROM.
|
||||
- It's configuration also calls VRC6a, iNES mapper 024.
|
||||
|
||||
351949A PCB is for Last 2 titles with VRC VI, Bigger board has VRC VI, PRG and CHR ROM, and Battery Backed 8K x 8 bit SRAM.
|
||||
- Additionally, It's PRG A0 and A1 bit to VRC VI input is swapped, compare to above.
|
||||
- It's configuration also calls VRC6b, iNES mapper 026.
|
||||
|
||||
The chip itself has 053328, 053329, 053330 Revision, but Its difference between revision is unknown.
|
||||
|
||||
Like other mappers for NES, It has internal timer - Its timer can be sync with scanline like other Konami mapper in this era.
|
||||
|
||||
Register layout (Sound and Timer only; 351951 PCB case, 351949A swaps xxx1 and xxx2):
|
||||
|
||||
Address Bits Description
|
||||
7654 3210
|
||||
|
||||
9000-9002 Pulse 1
|
||||
|
||||
9000 x--- ---- Pulse 1 Duty ignore
|
||||
-xxx ---- Pulse 1 Duty cycle
|
||||
---- xxxx Pulse 1 Volume
|
||||
9001 xxxx xxxx Pulse 1 Pitch bit 0-7
|
||||
9002 x--- ---- Pulse 1 Enable
|
||||
---- xxxx Pulse 1 Pitch bit 8-11
|
||||
|
||||
9003 Sound control
|
||||
|
||||
9003 ---- -x-- 4 bit Frequency mode
|
||||
---- -0x- 8 bit Frequency mode
|
||||
---- ---x Halt
|
||||
|
||||
a000-a002 Pulse 2
|
||||
|
||||
a000 x--- ---- Pulse 2 Duty ignore
|
||||
-xxx ---- Pulse 2 Duty cycle
|
||||
---- xxxx Pulse 2 Volume
|
||||
a001 xxxx xxxx Pulse 2 Pitch bit 0-7
|
||||
a002 x--- ---- Pulse 2 Enable
|
||||
---- xxxx Pulse 2 Pitch bit 8-11
|
||||
|
||||
b000-b002 Sawtooth
|
||||
|
||||
b000 --xx xxxx Sawtooth Accumulate Rate
|
||||
b001 xxxx xxxx Sawtooth Pitch bit 0-7
|
||||
b002 x--- ---- Sawtooth Enable
|
||||
---- xxxx Sawtooth Pitch bit 8-11
|
||||
|
||||
f000-f002 IRQ Timer
|
||||
|
||||
f000 xxxx xxxx IRQ Timer latch
|
||||
f001 ---- -0-- Sync with scanline
|
||||
---- --x- Enable timer
|
||||
---- ---x Enable timer after IRQ Acknowledge
|
||||
f002 ---- ---- IRQ Acknowledge
|
||||
|
||||
Frequency calculations:
|
||||
|
||||
if 4 bit Frequency Mode then
|
||||
Frequency: Input clock / (bit 8 to 11 of Pitch + 1)
|
||||
end else if 8 bit Frequency Mode then
|
||||
Frequency: Input clock / (bit 4 to 11 of Pitch + 1)
|
||||
end else then
|
||||
Frequency: Input clock / (Pitch + 1)
|
||||
end
|
||||
*/
|
||||
|
||||
#include "vrcvi.hpp"
|
||||
|
||||
void vrcvi_core::tick()
|
||||
{
|
||||
m_out = 0;
|
||||
if (!m_control.m_halt) // Halt flag
|
||||
{
|
||||
// tick per each clock
|
||||
for (auto & elem : m_pulse)
|
||||
{
|
||||
if (elem.tick())
|
||||
m_out += elem.m_control.m_volume; // add 4 bit pulse output
|
||||
}
|
||||
if (m_sawtooth.tick())
|
||||
m_out += bitfield(m_sawtooth.m_accum, 3, 5); // add 5 bit sawtooth output
|
||||
}
|
||||
if (m_timer.tick())
|
||||
m_timer.counter_tick();
|
||||
}
|
||||
|
||||
void vrcvi_core::reset()
|
||||
{
|
||||
for (auto & elem : m_pulse)
|
||||
elem.reset();
|
||||
|
||||
m_sawtooth.reset();
|
||||
m_timer.reset();
|
||||
m_control.reset();
|
||||
m_out = 0;
|
||||
}
|
||||
|
||||
bool vrcvi_core::alu_t::tick()
|
||||
{
|
||||
if (m_divider.m_enable)
|
||||
{
|
||||
const u16 temp = m_counter;
|
||||
// post decrement
|
||||
if (bitfield(m_host.m_control.m_shift, 1))
|
||||
{
|
||||
m_counter = (m_counter & 0x0ff) | (bitfield(bitfield(m_counter, 8, 4) - 1, 0, 4) << 8);
|
||||
m_counter = (m_counter & 0xf00) | (bitfield(bitfield(m_counter, 0, 8) - 1, 0, 8) << 0);
|
||||
}
|
||||
else if (bitfield(m_host.m_control.m_shift, 0))
|
||||
{
|
||||
m_counter = (m_counter & 0x00f) | (bitfield(bitfield(m_counter, 4, 8) - 1, 0, 8) << 4);
|
||||
m_counter = (m_counter & 0xff0) | (bitfield(bitfield(m_counter, 0, 4) - 1, 0, 4) << 0);
|
||||
}
|
||||
else
|
||||
m_counter = bitfield(bitfield(m_counter, 0, 12) - 1, 0, 12);
|
||||
|
||||
// carry handling
|
||||
bool carry = bitfield(m_host.m_control.m_shift, 1) ? (bitfield(temp, 8, 4) == 0) :
|
||||
(bitfield(m_host.m_control.m_shift, 0) ? (bitfield(temp, 4, 8) == 0) :
|
||||
(bitfield(temp, 0, 12) == 0));
|
||||
if (carry)
|
||||
m_counter = m_divider.m_divider;
|
||||
|
||||
return carry;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
bool vrcvi_core::pulse_t::tick()
|
||||
{
|
||||
if (!m_divider.m_enable)
|
||||
{
|
||||
m_cycle = 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
if (vrcvi_core::alu_t::tick())
|
||||
m_cycle = bitfield(m_cycle + 1, 0, 4);
|
||||
|
||||
return m_control.m_mode ? true : ((m_cycle > m_control.m_duty) ? true : false);
|
||||
}
|
||||
|
||||
bool vrcvi_core::sawtooth_t::tick()
|
||||
{
|
||||
if (!m_divider.m_enable)
|
||||
{
|
||||
m_accum = 0;
|
||||
return false;
|
||||
}
|
||||
|
||||
if (vrcvi_core::alu_t::tick())
|
||||
{
|
||||
if (bitfield(m_cycle++, 0)) // Even step only
|
||||
m_accum += m_rate;
|
||||
if (m_cycle >= 14) // Reset accumulator at every 14 cycles
|
||||
{
|
||||
m_accum = 0;
|
||||
m_cycle = 0;
|
||||
}
|
||||
}
|
||||
return (m_accum == 0) ? false : true;
|
||||
}
|
||||
|
||||
void vrcvi_core::alu_t::reset()
|
||||
{
|
||||
m_divider.reset();
|
||||
m_counter = 0;
|
||||
m_cycle = 0;
|
||||
}
|
||||
|
||||
void vrcvi_core::pulse_t::reset()
|
||||
{
|
||||
vrcvi_core::alu_t::reset();
|
||||
m_control.reset();
|
||||
}
|
||||
|
||||
void vrcvi_core::sawtooth_t::reset()
|
||||
{
|
||||
vrcvi_core::alu_t::reset();
|
||||
m_rate = 0;
|
||||
m_accum = 0;
|
||||
}
|
||||
|
||||
bool vrcvi_core::timer_t::tick()
|
||||
{
|
||||
if (m_timer_control.m_enable)
|
||||
{
|
||||
if (!m_timer_control.m_sync) // scanline sync mode
|
||||
{
|
||||
m_prescaler -= 3;
|
||||
if (m_prescaler <= 0)
|
||||
{
|
||||
m_prescaler += 341;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
}
|
||||
return (m_timer_control.m_enable && m_timer_control.m_sync) ? true : false;
|
||||
}
|
||||
|
||||
void vrcvi_core::timer_t::counter_tick()
|
||||
{
|
||||
if (bitfield(++m_counter, 0, 8) == 0)
|
||||
{
|
||||
m_counter = m_counter_latch;
|
||||
irq_set();
|
||||
}
|
||||
}
|
||||
|
||||
void vrcvi_core::timer_t::reset()
|
||||
{
|
||||
m_timer_control.reset();
|
||||
m_prescaler = 341;
|
||||
m_counter = m_counter_latch = 0;
|
||||
irq_clear();
|
||||
}
|
||||
|
||||
// Accessors
|
||||
|
||||
void vrcvi_core::alu_t::divider_t::write(bool msb, u8 data)
|
||||
{
|
||||
if (msb)
|
||||
{
|
||||
m_divider = (m_divider & ~0xf00) | (bitfield<u32>(data, 0, 4) << 8);
|
||||
m_enable = bitfield(data, 7);
|
||||
}
|
||||
else
|
||||
m_divider = (m_divider & ~0x0ff) | data;
|
||||
}
|
||||
|
||||
|
||||
void vrcvi_core::pulse_w(u8 voice, u8 address, u8 data)
|
||||
{
|
||||
pulse_t &v = m_pulse[voice];
|
||||
switch (address)
|
||||
{
|
||||
case 0x00: // Control - 0x9000 (Pulse 1), 0xa000 (Pulse 2)
|
||||
v.m_control.m_mode = bitfield(data, 7);
|
||||
v.m_control.m_duty = bitfield(data, 4, 3);
|
||||
v.m_control.m_volume = bitfield(data, 0, 4);
|
||||
break;
|
||||
case 0x01: // Pitch LSB - 0x9001/0x9002 (Pulse 1), 0xa001/0xa002 (Pulse 2)
|
||||
v.m_divider.write(false, data);
|
||||
break;
|
||||
case 0x02: // Pitch MSB, Enable/Disable - 0x9002/0x9001 (Pulse 1), 0xa002/0xa001 (Pulse 2)
|
||||
v.m_divider.write(true, data);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void vrcvi_core::saw_w(u8 address, u8 data)
|
||||
{
|
||||
switch (address)
|
||||
{
|
||||
case 0x00: // Sawtooth Accumulate - 0xb000
|
||||
m_sawtooth.m_rate = bitfield(data, 0, 6);
|
||||
break;
|
||||
case 0x01: // Pitch LSB - 0xb001/0xb002 (Sawtooth)
|
||||
m_sawtooth.m_divider.write(false, data);
|
||||
break;
|
||||
case 0x02: // Pitch MSB, Enable/Disable - 0xb002/0xb001 (Sawtooth)
|
||||
m_sawtooth.m_divider.write(true, data);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void vrcvi_core::timer_w(u8 address, u8 data)
|
||||
{
|
||||
switch (address)
|
||||
{
|
||||
case 0x00: // Timer latch - 0xf000
|
||||
m_timer.m_counter_latch = data;
|
||||
break;
|
||||
case 0x01: // Timer control - 0xf001/0xf002
|
||||
m_timer.m_timer_control.m_sync = bitfield(data, 2);
|
||||
m_timer.m_timer_control.m_enable = bitfield(data, 1);
|
||||
m_timer.m_timer_control.m_enable_ack = bitfield(data, 0);
|
||||
if (m_timer.m_timer_control.m_enable)
|
||||
{
|
||||
m_timer.m_counter = m_timer.m_counter_latch;
|
||||
m_timer.m_prescaler = 341;
|
||||
}
|
||||
m_timer.irq_clear();
|
||||
break;
|
||||
case 0x02: // IRQ Acknowledge - 0xf002/0xf001
|
||||
m_timer.irq_clear();
|
||||
m_timer.m_timer_control.m_enable = m_timer.m_timer_control.m_enable_ack;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void vrcvi_core::control_w(u8 data)
|
||||
{
|
||||
// Global control - 0x9003
|
||||
m_control.m_halt = bitfield(data, 0);
|
||||
m_control.m_shift = bitfield(data, 1, 2);
|
||||
}
|
||||
238
src/engine/platform/sound/vrcvi/vrcvi.hpp
Normal file
238
src/engine/platform/sound/vrcvi/vrcvi.hpp
Normal file
|
|
@ -0,0 +1,238 @@
|
|||
/*
|
||||
License: BSD-3-Clause
|
||||
see https://github.com/cam900/vgsound_emu/LICENSE for more details
|
||||
|
||||
Copyright holder(s): cam900
|
||||
Konami VRC VI sound emulation core
|
||||
|
||||
See vrcvi.cpp to more infos.
|
||||
*/
|
||||
|
||||
#include <algorithm>
|
||||
#include <memory>
|
||||
|
||||
#ifndef _VGSOUND_EMU_VRCVI_HPP
|
||||
#define _VGSOUND_EMU_VRCVI_HPP
|
||||
|
||||
#pragma once
|
||||
|
||||
namespace vrcvi
|
||||
{
|
||||
typedef unsigned char u8;
|
||||
typedef unsigned short u16;
|
||||
typedef unsigned int u32;
|
||||
typedef signed char s8;
|
||||
typedef signed short s16;
|
||||
|
||||
// get bitfield, bitfield(input, position, len)
|
||||
template<typename T> T bitfield(T in, u8 pos, u8 len = 1)
|
||||
{
|
||||
return (in >> pos) & (len ? (T(1 << len) - 1) : 1);
|
||||
}
|
||||
};
|
||||
|
||||
class vrcvi_intf
|
||||
{
|
||||
public:
|
||||
virtual void irq_w(bool irq) { }
|
||||
};
|
||||
|
||||
using namespace vrcvi;
|
||||
class vrcvi_core
|
||||
{
|
||||
public:
|
||||
friend class vrcvi_intf;
|
||||
// constructor
|
||||
vrcvi_core(vrcvi_intf &intf)
|
||||
: m_pulse{*this,*this}
|
||||
, m_sawtooth(*this)
|
||||
, m_timer(*this)
|
||||
, m_intf(intf)
|
||||
{
|
||||
}
|
||||
// accessors, getters, setters
|
||||
void pulse_w(u8 voice, u8 address, u8 data);
|
||||
void saw_w(u8 address, u8 data);
|
||||
void timer_w(u8 address, u8 data);
|
||||
void control_w(u8 data);
|
||||
|
||||
// internal state
|
||||
void reset();
|
||||
void tick();
|
||||
|
||||
// 6 bit output
|
||||
s8 out() { return m_out; }
|
||||
private:
|
||||
// Common ALU for sound channels
|
||||
struct alu_t
|
||||
{
|
||||
alu_t(vrcvi_core &host)
|
||||
: m_host(host)
|
||||
{ };
|
||||
|
||||
|
||||
virtual void reset();
|
||||
virtual bool tick();
|
||||
|
||||
struct divider_t
|
||||
{
|
||||
divider_t()
|
||||
: m_divider(0)
|
||||
, m_enable(0)
|
||||
{ };
|
||||
|
||||
void reset()
|
||||
{
|
||||
m_divider = 0;
|
||||
m_enable = 0;
|
||||
}
|
||||
|
||||
void write(bool msb, u8 data);
|
||||
|
||||
u16 m_divider : 12; // divider (pitch)
|
||||
u16 m_enable : 1; // channel enable flag
|
||||
};
|
||||
|
||||
vrcvi_core &m_host;
|
||||
divider_t m_divider;
|
||||
u16 m_counter = 0; // clock counter
|
||||
u8 m_cycle = 0; // clock cycle
|
||||
};
|
||||
|
||||
// 2 Pulse channels
|
||||
struct pulse_t : alu_t
|
||||
{
|
||||
pulse_t(vrcvi_core &host)
|
||||
: alu_t(host)
|
||||
{ };
|
||||
|
||||
virtual void reset() override;
|
||||
virtual bool tick() override;
|
||||
|
||||
// Control bits
|
||||
struct pulse_control_t
|
||||
{
|
||||
pulse_control_t()
|
||||
: m_mode(0)
|
||||
, m_duty(0)
|
||||
, m_volume(0)
|
||||
{ };
|
||||
|
||||
void reset()
|
||||
{
|
||||
m_mode = 0;
|
||||
m_duty = 0;
|
||||
m_volume = 0;
|
||||
}
|
||||
|
||||
u8 m_mode : 1; // duty toggle flag
|
||||
u8 m_duty : 3; // 3 bit duty cycle
|
||||
u8 m_volume : 4; // 4 bit volume
|
||||
};
|
||||
|
||||
pulse_control_t m_control;
|
||||
};
|
||||
|
||||
// 1 Sawtooth channel
|
||||
struct sawtooth_t : alu_t
|
||||
{
|
||||
sawtooth_t(vrcvi_core &host)
|
||||
: alu_t(host)
|
||||
{ };
|
||||
|
||||
virtual void reset() override;
|
||||
virtual bool tick() override;
|
||||
|
||||
u8 m_rate = 0; // sawtooth accumulate rate
|
||||
u8 m_accum = 0; // sawtooth accumulator, high 5 bit is accumulated to output
|
||||
};
|
||||
|
||||
// Internal timer
|
||||
struct timer_t
|
||||
{
|
||||
timer_t(vrcvi_core &host)
|
||||
: m_host(host)
|
||||
{ };
|
||||
|
||||
void reset();
|
||||
bool tick();
|
||||
void counter_tick();
|
||||
|
||||
// IRQ update
|
||||
void update() { m_host.m_intf.irq_w(m_timer_control.m_irq_trigger); }
|
||||
void irq_set()
|
||||
{
|
||||
if (!m_timer_control.m_irq_trigger)
|
||||
{
|
||||
m_timer_control.m_irq_trigger = 1;
|
||||
update();
|
||||
}
|
||||
}
|
||||
void irq_clear()
|
||||
{
|
||||
if (m_timer_control.m_irq_trigger)
|
||||
{
|
||||
m_timer_control.m_irq_trigger = 0;
|
||||
update();
|
||||
}
|
||||
}
|
||||
|
||||
// Control bits
|
||||
struct timer_control_t
|
||||
{
|
||||
timer_control_t()
|
||||
: m_irq_trigger(0)
|
||||
, m_enable_ack(0)
|
||||
, m_enable(0)
|
||||
, m_sync(0)
|
||||
{ };
|
||||
|
||||
void reset()
|
||||
{
|
||||
m_irq_trigger = 0;
|
||||
m_enable_ack = 0;
|
||||
m_enable = 0;
|
||||
m_sync = 0;
|
||||
}
|
||||
|
||||
u8 m_irq_trigger : 1;
|
||||
u8 m_enable_ack : 1;
|
||||
u8 m_enable : 1;
|
||||
u8 m_sync : 1;
|
||||
};
|
||||
|
||||
vrcvi_core &m_host; // host core
|
||||
timer_control_t m_timer_control; // timer control bits
|
||||
s16 m_prescaler = 341; // prescaler
|
||||
u8 m_counter = 0; // clock counter
|
||||
u8 m_counter_latch = 0; // clock counter latch
|
||||
};
|
||||
|
||||
struct global_control_t
|
||||
{
|
||||
global_control_t()
|
||||
: m_halt(0)
|
||||
, m_shift(0)
|
||||
{ };
|
||||
|
||||
void reset()
|
||||
{
|
||||
m_halt = 0;
|
||||
m_shift = 0;
|
||||
}
|
||||
|
||||
u8 m_halt : 1; // halt sound
|
||||
u8 m_shift : 2; // 4/8 bit right shift
|
||||
};
|
||||
|
||||
pulse_t m_pulse[2]; // 2 pulse channels
|
||||
sawtooth_t m_sawtooth; // sawtooth channel
|
||||
timer_t m_timer; // internal timer
|
||||
global_control_t m_control; // control
|
||||
|
||||
vrcvi_intf &m_intf;
|
||||
|
||||
s8 m_out = 0; // 6 bit output
|
||||
};
|
||||
|
||||
#endif
|
||||
496
src/engine/platform/vrc6.cpp
Normal file
496
src/engine/platform/vrc6.cpp
Normal file
|
|
@ -0,0 +1,496 @@
|
|||
/**
|
||||
* Furnace Tracker - multi-system chiptune tracker
|
||||
* Copyright (C) 2021-2022 tildearrow and contributors
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#include "vrc6.h"
|
||||
#include "../engine.h"
|
||||
#include <cstddef>
|
||||
#include <math.h>
|
||||
|
||||
#define CHIP_DIVIDER 1 // 16 for pulse, 14 for sawtooth
|
||||
|
||||
#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
|
||||
#define chWrite(c,a,v) rWrite(0x9000+(c<<12)+(a&3),v)
|
||||
|
||||
const char* regCheatSheetVRC6[]={
|
||||
"S0DutyVol", "9000",
|
||||
"S0PeriodL", "9001",
|
||||
"S0PeriodH", "9002",
|
||||
"GlobalCtl", "9003",
|
||||
"S1DutyVol", "A000",
|
||||
"S1PeriodL", "A001",
|
||||
"S1PeriodH", "A002",
|
||||
"SawVolume", "B000",
|
||||
"SawPeriodL", "B001",
|
||||
"SawPeriodH", "B002",
|
||||
"TimerLatch", "F000",
|
||||
"TimerCtl", "F001",
|
||||
"IRQAck", "F002",
|
||||
NULL
|
||||
};
|
||||
|
||||
const char** DivPlatformVRC6::getRegisterSheet() {
|
||||
return regCheatSheetVRC6;
|
||||
}
|
||||
|
||||
const char* DivPlatformVRC6::getEffectName(unsigned char effect) {
|
||||
switch (effect) {
|
||||
case 0x12:
|
||||
return "12xx: Set duty cycle (pulse: 0 to 7)";
|
||||
break;
|
||||
case 0x17:
|
||||
return "17xx: Toggle PCM mode (pulse channel)";
|
||||
break;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::acquire(short* bufL, short* bufR, size_t start, size_t len) {
|
||||
for (size_t i=start; i<start+len; i++) {
|
||||
// PCM part
|
||||
for (int i=0; i<2; i++) {
|
||||
if (chan[i].pcm && chan[i].dacSample!=-1) {
|
||||
chan[i].dacPeriod+=chan[i].dacRate;
|
||||
if (chan[i].dacPeriod>rate) {
|
||||
DivSample* s=parent->getSample(chan[i].dacSample);
|
||||
if (s->samples<=0) {
|
||||
chan[i].dacSample=-1;
|
||||
chWrite(i,0,0);
|
||||
continue;
|
||||
}
|
||||
unsigned char dacData=(((unsigned char)s->data8[chan[i].dacPos]^0x80)>>4);
|
||||
chan[i].dacOut=MAX(0,MIN(15,(dacData*chan[i].outVol)>>4));
|
||||
if (!isMuted[i]) {
|
||||
chWrite(i,0,0x80|chan[i].dacOut);
|
||||
}
|
||||
chan[i].dacPos++;
|
||||
if (chan[i].dacPos>=s->samples) {
|
||||
if (s->loopStart>=0 && s->loopStart<(int)s->samples) {
|
||||
chan[i].dacPos=s->loopStart;
|
||||
} else {
|
||||
chan[i].dacSample=-1;
|
||||
chWrite(i,0,0);
|
||||
}
|
||||
}
|
||||
chan[i].dacPeriod-=rate;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// VRC6 part
|
||||
vrc6.tick();
|
||||
int sample=vrc6.out()<<9; // scale to 16 bit
|
||||
if (sample>32767) sample=32767;
|
||||
if (sample<-32768) sample=-32768;
|
||||
bufL[i]=bufR[i]=sample;
|
||||
|
||||
// Command part
|
||||
while (!writes.empty()) {
|
||||
QueuedWrite w=writes.front();
|
||||
switch (w.addr&0xf000) {
|
||||
case 0x9000: // Pulse 1
|
||||
if (w.addr<=0x9003) {
|
||||
if (w.addr==0x9003) {
|
||||
vrc6.control_w(w.val);
|
||||
} else if (w.addr<=0x9002) {
|
||||
vrc6.pulse_w(0,w.addr&3,w.val);
|
||||
}
|
||||
regPool[w.addr-0x9000]=w.val;
|
||||
}
|
||||
break;
|
||||
case 0xa000: // Pulse 2
|
||||
if (w.addr<=0xa002) {
|
||||
vrc6.pulse_w(1,w.addr&3,w.val);
|
||||
regPool[(w.addr-0xa000)+4]=w.val;
|
||||
}
|
||||
break;
|
||||
case 0xb000: // Sawtooth
|
||||
if (w.addr<=0xb002) {
|
||||
vrc6.saw_w(w.addr&3,w.val);
|
||||
regPool[(w.addr-0xb000)+7]=w.val;
|
||||
}
|
||||
break;
|
||||
case 0xf000: // IRQ/Timer
|
||||
if (w.addr<=0xf002) {
|
||||
vrc6.timer_w(w.addr&3,w.val);
|
||||
regPool[(w.addr-0xf000)+10]=w.val;
|
||||
}
|
||||
break;
|
||||
}
|
||||
writes.pop();
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::tick() {
|
||||
for (int i=0; i<3; i++) {
|
||||
chan[i].std.next();
|
||||
if (chan[i].std.hadVol) {
|
||||
if (i==2) { // sawtooth
|
||||
chan[i].outVol=((chan[i].vol&63)*MIN(63,chan[i].std.vol))/63;
|
||||
if (chan[i].outVol<0) chan[i].outVol=0;
|
||||
if (chan[i].outVol>63) chan[i].outVol=63;
|
||||
if (!isMuted[i]) {
|
||||
chWrite(i,0,chan[i].outVol);
|
||||
}
|
||||
} else { // pulse
|
||||
chan[i].outVol=((chan[i].vol&15)*MIN(63,chan[i].std.vol))/63;
|
||||
if (chan[i].outVol<0) chan[i].outVol=0;
|
||||
if (chan[i].outVol>15) chan[i].outVol=15;
|
||||
if ((!isMuted[i]) && (!chan[i].pcm)) {
|
||||
chWrite(i,0,(chan[i].outVol&0xf)|((chan[i].duty&7)<<4));
|
||||
}
|
||||
}
|
||||
}
|
||||
if (chan[i].std.hadArp) {
|
||||
if (!chan[i].inPorta) {
|
||||
if (chan[i].std.arpMode) {
|
||||
chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp);
|
||||
} else {
|
||||
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
|
||||
}
|
||||
}
|
||||
chan[i].freqChanged=true;
|
||||
} else {
|
||||
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
|
||||
chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
|
||||
chan[i].freqChanged=true;
|
||||
}
|
||||
}
|
||||
if (chan[i].std.hadDuty) {
|
||||
chan[i].duty=chan[i].std.duty;
|
||||
if ((!isMuted[i]) && (i!=2) && (!chan[i].pcm)) { // pulse
|
||||
chWrite(i,0,(chan[i].outVol&0xf)|((chan[i].duty&7)<<4));
|
||||
}
|
||||
}
|
||||
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
|
||||
if (i==2) { // sawtooth
|
||||
chan[i].freq=parent->calcFreq(chan[i].baseFreq/14,chan[i].pitch,true)-1;
|
||||
} else { // pulse
|
||||
chan[i].freq=parent->calcFreq(chan[i].baseFreq/16,chan[i].pitch,true)-1;
|
||||
if (chan[i].furnaceDac) {
|
||||
double off=1.0;
|
||||
if (chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
|
||||
DivSample* s=parent->getSample(chan[i].dacSample);
|
||||
if (s->centerRate<1) {
|
||||
off=1.0;
|
||||
} else {
|
||||
off=8363.0/(double)s->centerRate;
|
||||
}
|
||||
}
|
||||
chan[i].dacRate=((double)chipClock)/MAX(1,off*chan[i].freq);
|
||||
if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dacRate);
|
||||
}
|
||||
}
|
||||
if (chan[i].freq>4095) chan[i].freq=4095;
|
||||
if (chan[i].freq<0) chan[i].freq=0;
|
||||
if (chan[i].keyOn) {
|
||||
//rWrite(16+i*5+1,((chan[i].duty&3)<<6)|(63-(ins->gb.soundLen&63)));
|
||||
//rWrite(16+i*5+2,((chan[i].vol<<4))|(ins->gb.envLen&7)|((ins->gb.envDir&1)<<3));
|
||||
}
|
||||
if (chan[i].keyOff) {
|
||||
chWrite(i,2,0);
|
||||
} else {
|
||||
chWrite(i,1,chan[i].freq&0xff);
|
||||
chWrite(i,2,0x80|((chan[i].freq>>8)&0xf));
|
||||
}
|
||||
if (chan[i].keyOn) chan[i].keyOn=false;
|
||||
if (chan[i].keyOff) chan[i].keyOff=false;
|
||||
chan[i].freqChanged=false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int DivPlatformVRC6::dispatch(DivCommand c) {
|
||||
switch (c.cmd) {
|
||||
case DIV_CMD_NOTE_ON:
|
||||
if (c.chan!=2) { // pulse wave
|
||||
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
|
||||
if (ins->type==DIV_INS_AMIGA) {
|
||||
chan[c.chan].pcm=true;
|
||||
} else if (chan[c.chan].furnaceDac) {
|
||||
chan[c.chan].pcm=false;
|
||||
}
|
||||
if (chan[c.chan].pcm) {
|
||||
if (skipRegisterWrites) break;
|
||||
if (ins->type==DIV_INS_AMIGA) {
|
||||
chan[c.chan].dacSample=ins->amiga.initSample;
|
||||
if (chan[c.chan].dacSample<0 || chan[c.chan].dacSample>=parent->song.sampleLen) {
|
||||
chan[c.chan].dacSample=-1;
|
||||
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
|
||||
break;
|
||||
} else {
|
||||
if (dumpWrites) {
|
||||
chWrite(c.chan,2,0x80);
|
||||
chWrite(c.chan,0,isMuted[c.chan]?0:0x80);
|
||||
addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
|
||||
}
|
||||
}
|
||||
chan[c.chan].dacPos=0;
|
||||
chan[c.chan].dacPeriod=0;
|
||||
if (c.value!=DIV_NOTE_NULL) {
|
||||
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
|
||||
chan[c.chan].freqChanged=true;
|
||||
chan[c.chan].note=c.value;
|
||||
}
|
||||
chan[c.chan].active=true;
|
||||
chan[c.chan].std.init(ins);
|
||||
//chan[c.chan].keyOn=true;
|
||||
chan[c.chan].furnaceDac=true;
|
||||
} else {
|
||||
if (c.value!=DIV_NOTE_NULL) {
|
||||
chan[c.chan].note=c.value;
|
||||
}
|
||||
chan[c.chan].dacSample=12*sampleBank+chan[c.chan].note%12;
|
||||
if (chan[c.chan].dacSample>=parent->song.sampleLen) {
|
||||
chan[c.chan].dacSample=-1;
|
||||
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
|
||||
break;
|
||||
} else {
|
||||
if (dumpWrites) addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
|
||||
}
|
||||
chan[c.chan].dacPos=0;
|
||||
chan[c.chan].dacPeriod=0;
|
||||
chan[c.chan].dacRate=parent->getSample(chan[c.chan].dacSample)->rate;
|
||||
if (dumpWrites) {
|
||||
chWrite(c.chan,2,0x80);
|
||||
chWrite(c.chan,0,isMuted[c.chan]?0:0x80);
|
||||
addWrite(0xffff0001+(c.chan<<8),chan[c.chan].dacRate);
|
||||
}
|
||||
chan[c.chan].furnaceDac=false;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (c.value!=DIV_NOTE_NULL) {
|
||||
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
|
||||
chan[c.chan].freqChanged=true;
|
||||
chan[c.chan].note=c.value;
|
||||
}
|
||||
chan[c.chan].active=true;
|
||||
chan[c.chan].keyOn=true;
|
||||
chan[c.chan].std.init(parent->getIns(chan[c.chan].ins));
|
||||
if (!isMuted[c.chan]) {
|
||||
if (c.chan==2) { // sawtooth
|
||||
chWrite(c.chan,0,chan[c.chan].vol);
|
||||
} else if (!chan[c.chan].pcm) {
|
||||
chWrite(c.chan,0,(chan[c.chan].vol&0xf)|((chan[c.chan].duty&7)<<4));
|
||||
}
|
||||
}
|
||||
break;
|
||||
case DIV_CMD_NOTE_OFF:
|
||||
chan[c.chan].dacSample=-1;
|
||||
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
|
||||
chan[c.chan].pcm=false;
|
||||
chan[c.chan].active=false;
|
||||
chan[c.chan].keyOff=true;
|
||||
chan[c.chan].std.init(NULL);
|
||||
break;
|
||||
case DIV_CMD_NOTE_OFF_ENV:
|
||||
case DIV_CMD_ENV_RELEASE:
|
||||
chan[c.chan].std.release();
|
||||
break;
|
||||
case DIV_CMD_INSTRUMENT:
|
||||
if (chan[c.chan].ins!=c.value || c.value2==1) {
|
||||
chan[c.chan].ins=c.value;
|
||||
}
|
||||
break;
|
||||
case DIV_CMD_VOLUME:
|
||||
if (chan[c.chan].vol!=c.value) {
|
||||
chan[c.chan].vol=c.value;
|
||||
if (!chan[c.chan].std.hasVol) {
|
||||
chan[c.chan].outVol=c.value;
|
||||
}
|
||||
if (!isMuted[c.chan]) {
|
||||
if (chan[c.chan].active) {
|
||||
if (c.chan==2) { // sawtooth
|
||||
chWrite(c.chan,0,chan[c.chan].vol);
|
||||
} else if (!chan[c.chan].pcm) {
|
||||
chWrite(c.chan,0,(chan[c.chan].vol&0xf)|((chan[c.chan].duty&7)<<4));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
case DIV_CMD_GET_VOLUME:
|
||||
return chan[c.chan].vol;
|
||||
break;
|
||||
case DIV_CMD_PITCH:
|
||||
chan[c.chan].pitch=c.value;
|
||||
chan[c.chan].freqChanged=true;
|
||||
break;
|
||||
case DIV_CMD_NOTE_PORTA: {
|
||||
int destFreq=NOTE_PERIODIC(c.value2);
|
||||
bool return2=false;
|
||||
if (destFreq>chan[c.chan].baseFreq) {
|
||||
chan[c.chan].baseFreq+=c.value;
|
||||
if (chan[c.chan].baseFreq>=destFreq) {
|
||||
chan[c.chan].baseFreq=destFreq;
|
||||
return2=true;
|
||||
}
|
||||
} else {
|
||||
chan[c.chan].baseFreq-=c.value;
|
||||
if (chan[c.chan].baseFreq<=destFreq) {
|
||||
chan[c.chan].baseFreq=destFreq;
|
||||
return2=true;
|
||||
}
|
||||
}
|
||||
chan[c.chan].freqChanged=true;
|
||||
if (return2) {
|
||||
chan[c.chan].inPorta=false;
|
||||
return 2;
|
||||
}
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_STD_NOISE_MODE:
|
||||
if ((c.chan!=2) && (!chan[c.chan].pcm)) { // pulse
|
||||
chan[c.chan].duty=c.value;
|
||||
}
|
||||
break;
|
||||
case DIV_CMD_SAMPLE_MODE:
|
||||
if (c.chan!=2) { // pulse
|
||||
chan[c.chan].pcm=c.value;
|
||||
}
|
||||
break;
|
||||
case DIV_CMD_SAMPLE_BANK:
|
||||
sampleBank=c.value;
|
||||
if (sampleBank>(parent->song.sample.size()/12)) {
|
||||
sampleBank=parent->song.sample.size()/12;
|
||||
}
|
||||
break;
|
||||
case DIV_CMD_LEGATO:
|
||||
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp):(0)));
|
||||
chan[c.chan].freqChanged=true;
|
||||
chan[c.chan].note=c.value;
|
||||
break;
|
||||
case DIV_CMD_PRE_PORTA:
|
||||
if (chan[c.chan].active && c.value2) {
|
||||
if (parent->song.resetMacroOnPorta) chan[c.chan].std.init(parent->getIns(chan[c.chan].ins));
|
||||
}
|
||||
chan[c.chan].inPorta=c.value;
|
||||
break;
|
||||
case DIV_CMD_GET_VOLMAX:
|
||||
if (c.chan==2) return 63; // sawtooth has 6 bit volume
|
||||
return 15; // pulse has 4 bit volume
|
||||
break;
|
||||
case DIV_ALWAYS_SET_VOLUME:
|
||||
return 1;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::muteChannel(int ch, bool mute) {
|
||||
isMuted[ch]=mute;
|
||||
if (isMuted[ch]) {
|
||||
chWrite(ch,0,0);
|
||||
} else if (chan[ch].active) {
|
||||
if (ch==2) { // sawtooth
|
||||
chWrite(ch,0,chan[ch].outVol);
|
||||
} else {
|
||||
chWrite(ch,0,chan[ch].pcm?chan[ch].dacOut:((chan[ch].outVol&0xf)|((chan[ch].duty&7)<<4)));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::forceIns() {
|
||||
for (int i=0; i<3; i++) {
|
||||
chan[i].insChanged=true;
|
||||
chan[i].freqChanged=true;
|
||||
}
|
||||
}
|
||||
|
||||
void* DivPlatformVRC6::getChanState(int ch) {
|
||||
return &chan[ch];
|
||||
}
|
||||
|
||||
unsigned char* DivPlatformVRC6::getRegisterPool() {
|
||||
return regPool;
|
||||
}
|
||||
|
||||
int DivPlatformVRC6::getRegisterPoolSize() {
|
||||
return 13;
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::reset() {
|
||||
for (int i=0; i<3; i++) {
|
||||
chan[i]=DivPlatformVRC6::Channel();
|
||||
}
|
||||
if (dumpWrites) {
|
||||
addWrite(0xffffffff,0);
|
||||
}
|
||||
|
||||
sampleBank=0;
|
||||
|
||||
vrc6.reset();
|
||||
// Initialize control register
|
||||
rWrite(0x9003,0);
|
||||
// Clear internal IRQ
|
||||
rWrite(0xf000,0);
|
||||
rWrite(0xf001,0);
|
||||
rWrite(0xf002,0);
|
||||
}
|
||||
|
||||
bool DivPlatformVRC6::keyOffAffectsArp(int ch) {
|
||||
return true;
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::setFlags(unsigned int flags) {
|
||||
if (flags==2) { // Dendy
|
||||
rate=COLOR_PAL*2.0/5.0;
|
||||
} else if (flags==1) { // PAL
|
||||
rate=COLOR_PAL*3.0/8.0;
|
||||
} else { // NTSC
|
||||
rate=COLOR_NTSC/2.0;
|
||||
}
|
||||
chipClock=rate;
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::notifyInsDeletion(void* ins) {
|
||||
for (int i=0; i<3; i++) {
|
||||
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::poke(unsigned int addr, unsigned short val) {
|
||||
rWrite(addr,val);
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::poke(std::vector<DivRegWrite>& wlist) {
|
||||
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
|
||||
}
|
||||
|
||||
int DivPlatformVRC6::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
|
||||
parent=p;
|
||||
dumpWrites=false;
|
||||
skipRegisterWrites=false;
|
||||
for (int i=0; i<3; i++) {
|
||||
isMuted[i]=false;
|
||||
}
|
||||
setFlags(flags);
|
||||
reset();
|
||||
return 3;
|
||||
}
|
||||
|
||||
void DivPlatformVRC6::quit() {
|
||||
}
|
||||
|
||||
DivPlatformVRC6::~DivPlatformVRC6() {
|
||||
}
|
||||
100
src/engine/platform/vrc6.h
Normal file
100
src/engine/platform/vrc6.h
Normal file
|
|
@ -0,0 +1,100 @@
|
|||
/**
|
||||
* Furnace Tracker - multi-system chiptune tracker
|
||||
* Copyright (C) 2021-2022 tildearrow and contributors
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along
|
||||
* with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#ifndef _VRC6_H
|
||||
#define _VRC6_H
|
||||
|
||||
#include <queue>
|
||||
#include "../dispatch.h"
|
||||
#include "../macroInt.h"
|
||||
#include "sound/vrcvi/vrcvi.hpp"
|
||||
|
||||
|
||||
class DivPlatformVRC6: public DivDispatch {
|
||||
struct Channel {
|
||||
int freq, baseFreq, pitch, note;
|
||||
int dacPeriod, dacRate, dacOut;
|
||||
unsigned int dacPos;
|
||||
int dacSample;
|
||||
unsigned char ins, duty;
|
||||
bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, pcm, furnaceDac;
|
||||
signed char vol, outVol;
|
||||
DivMacroInt std;
|
||||
Channel():
|
||||
freq(0),
|
||||
baseFreq(0),
|
||||
pitch(0),
|
||||
note(0),
|
||||
dacPeriod(0),
|
||||
dacRate(0),
|
||||
dacOut(0),
|
||||
dacPos(0),
|
||||
dacSample(-1),
|
||||
ins(-1),
|
||||
duty(0),
|
||||
active(false),
|
||||
insChanged(true),
|
||||
freqChanged(false),
|
||||
keyOn(false),
|
||||
keyOff(false),
|
||||
inPorta(false),
|
||||
pcm(false),
|
||||
furnaceDac(false),
|
||||
vol(15),
|
||||
outVol(15) {}
|
||||
};
|
||||
Channel chan[3];
|
||||
bool isMuted[3];
|
||||
struct QueuedWrite {
|
||||
unsigned short addr;
|
||||
unsigned char val;
|
||||
QueuedWrite(unsigned short a, unsigned char v): addr(a), val(v) {}
|
||||
};
|
||||
std::queue<QueuedWrite> writes;
|
||||
unsigned char sampleBank;
|
||||
vrcvi_intf intf;
|
||||
vrcvi_core vrc6;
|
||||
unsigned char regPool[13];
|
||||
|
||||
friend void putDispatchChan(void*,int,int);
|
||||
|
||||
public:
|
||||
void acquire(short* bufL, short* bufR, size_t start, size_t len);
|
||||
int dispatch(DivCommand c);
|
||||
void* getChanState(int chan);
|
||||
unsigned char* getRegisterPool();
|
||||
int getRegisterPoolSize();
|
||||
void reset();
|
||||
void forceIns();
|
||||
void tick();
|
||||
void muteChannel(int ch, bool mute);
|
||||
bool keyOffAffectsArp(int ch);
|
||||
void setFlags(unsigned int flags);
|
||||
void notifyInsDeletion(void* ins);
|
||||
void poke(unsigned int addr, unsigned short val);
|
||||
void poke(std::vector<DivRegWrite>& wlist);
|
||||
const char** getRegisterSheet();
|
||||
const char* getEffectName(unsigned char effect);
|
||||
int init(DivEngine* parent, int channels, int sugRate, unsigned int flags);
|
||||
void quit();
|
||||
DivPlatformVRC6() : vrc6(intf) {};
|
||||
~DivPlatformVRC6();
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
@ -20,7 +20,6 @@
|
|||
#ifndef _X1_010_H
|
||||
#define _X1_010_H
|
||||
|
||||
#include <queue>
|
||||
#include "../dispatch.h"
|
||||
#include "../engine.h"
|
||||
#include "../macroInt.h"
|
||||
|
|
|
|||
|
|
@ -387,6 +387,18 @@ bool DivEngine::perSystemEffect(int ch, unsigned char effect, unsigned char effe
|
|||
return false;
|
||||
}
|
||||
break;
|
||||
case DIV_SYSTEM_VRC6:
|
||||
switch (effect) {
|
||||
case 0x12: // duty or noise mode
|
||||
dispatchCmd(DivCommand(DIV_CMD_STD_NOISE_MODE,ch,effectVal));
|
||||
break;
|
||||
case 0x17: // PCM enable
|
||||
dispatchCmd(DivCommand(DIV_CMD_SAMPLE_MODE,ch,(effectVal>0)));
|
||||
break;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -38,6 +38,7 @@
|
|||
#include "../engine/platform/amiga.h"
|
||||
#include "../engine/platform/x1_010.h"
|
||||
#include "../engine/platform/n163.h"
|
||||
#include "../engine/platform/vrc6.h"
|
||||
#include "../engine/platform/dummy.h"
|
||||
|
||||
#define GENESIS_DEBUG \
|
||||
|
|
@ -305,6 +306,33 @@ void putDispatchChan(void* data, int chanNum, int type) {
|
|||
ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
|
||||
break;
|
||||
}
|
||||
case DIV_SYSTEM_VRC6: {
|
||||
DivPlatformVRC6::Channel* ch=(DivPlatformVRC6::Channel*)data;
|
||||
ImGui::Text("> VRC6");
|
||||
ImGui::Text("* freq: %d",ch->freq);
|
||||
ImGui::Text(" - base: %d",ch->baseFreq);
|
||||
ImGui::Text(" - pitch: %d",ch->pitch);
|
||||
ImGui::Text("- note: %d",ch->note);
|
||||
ImGui::Text("* DAC:");
|
||||
ImGui::Text(" - period: %d",ch->dacPeriod);
|
||||
ImGui::Text(" - rate: %d",ch->dacRate);
|
||||
ImGui::Text(" - out: %d",ch->dacOut);
|
||||
ImGui::Text(" - pos: %d",ch->dacPos);
|
||||
ImGui::Text(" - sample: %d",ch->dacSample);
|
||||
ImGui::Text("- ins: %d",ch->ins);
|
||||
ImGui::Text("- duty: %d",ch->duty);
|
||||
ImGui::Text("- vol: %.2x",ch->vol);
|
||||
ImGui::Text("- outVol: %.2x",ch->outVol);
|
||||
ImGui::TextColored(ch->active?colorOn:colorOff,">> Active");
|
||||
ImGui::TextColored(ch->insChanged?colorOn:colorOff,">> InsChanged");
|
||||
ImGui::TextColored(ch->freqChanged?colorOn:colorOff,">> FreqChanged");
|
||||
ImGui::TextColored(ch->keyOn?colorOn:colorOff,">> KeyOn");
|
||||
ImGui::TextColored(ch->keyOff?colorOn:colorOff,">> KeyOff");
|
||||
ImGui::TextColored(ch->inPorta?colorOn:colorOff,">> InPorta");
|
||||
ImGui::TextColored(ch->pcm?colorOn:colorOff,">> DAC");
|
||||
ImGui::TextColored(ch->furnaceDac?colorOn:colorOff,">> FurnaceDAC");
|
||||
break;
|
||||
}
|
||||
default:
|
||||
ImGui::Text("Unknown system! Help!");
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -166,5 +166,6 @@ const int availableSystems[]={
|
|||
DIV_SYSTEM_N163,
|
||||
DIV_SYSTEM_PET,
|
||||
DIV_SYSTEM_VIC20,
|
||||
DIV_SYSTEM_VRC6,
|
||||
0 // don't remove this last one!
|
||||
};
|
||||
|
|
@ -2091,7 +2091,7 @@ void FurnaceGUI::drawInsEdit() {
|
|||
if ((ins->type==DIV_INS_PCE || ins->type==DIV_INS_AY8930)) {
|
||||
volMax=31;
|
||||
}
|
||||
if (ins->type==DIV_INS_OPL || ins->type==DIV_INS_VERA) {
|
||||
if (ins->type==DIV_INS_OPL || ins->type==DIV_INS_VERA || ins->type==DIV_INS_VRC6) {
|
||||
volMax=63;
|
||||
}
|
||||
if (ins->type==DIV_INS_AMIGA) {
|
||||
|
|
@ -2156,6 +2156,10 @@ void FurnaceGUI::drawInsEdit() {
|
|||
dutyLabel="Waveform pos.";
|
||||
dutyMax=255;
|
||||
}
|
||||
if (ins->type==DIV_INS_VRC6) {
|
||||
dutyLabel="Duty";
|
||||
dutyMax=7;
|
||||
}
|
||||
bool dutyIsRel=(ins->type==DIV_INS_C64 && !ins->c64.dutyIsAbs);
|
||||
|
||||
const char* waveLabel="Waveform";
|
||||
|
|
@ -2164,7 +2168,7 @@ void FurnaceGUI::drawInsEdit() {
|
|||
if (ins->type==DIV_INS_C64 || ins->type==DIV_INS_AY || ins->type==DIV_INS_AY8930 || ins->type==DIV_INS_SAA1099) {
|
||||
bitMode=true;
|
||||
}
|
||||
if (ins->type==DIV_INS_STD) waveMax=0;
|
||||
if (ins->type==DIV_INS_STD || ins->type==DIV_INS_VRC6) waveMax=0;
|
||||
if (ins->type==DIV_INS_TIA || ins->type==DIV_INS_VIC || ins->type==DIV_INS_OPLL) waveMax=15;
|
||||
if (ins->type==DIV_INS_C64) waveMax=4;
|
||||
if (ins->type==DIV_INS_SAA1099) waveMax=2;
|
||||
|
|
|
|||
|
|
@ -191,6 +191,13 @@ void FurnaceGUI::initSystemPresets() {
|
|||
0
|
||||
}
|
||||
));
|
||||
cat.systems.push_back(FurnaceGUISysDef(
|
||||
"NES with Konami VRC6", {
|
||||
DIV_SYSTEM_NES, 64, 0, 0,
|
||||
DIV_SYSTEM_VRC6, 64, 0, 0,
|
||||
0
|
||||
}
|
||||
));
|
||||
cat.systems.push_back(FurnaceGUISysDef(
|
||||
"NES with Konami VRC7", {
|
||||
DIV_SYSTEM_NES, 64, 0, 0,
|
||||
|
|
|
|||
|
|
@ -147,6 +147,7 @@ void FurnaceGUI::drawSysConf(int i) {
|
|||
}
|
||||
break;
|
||||
case DIV_SYSTEM_NES:
|
||||
case DIV_SYSTEM_VRC6:
|
||||
if (ImGui::RadioButton("NTSC (1.79MHz)",flags==0)) {
|
||||
e->setSysFlags(i,0,restart);
|
||||
updateWindowTitle();
|
||||
|
|
|
|||
Loading…
Reference in a new issue