Initial Burgundy sound codec emulation.

devices/sound/burgundy.cpp

@@ -0,0 +1,104 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-23 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+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 3 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, see <https://www.gnu.org/licenses/>.
+*/
+
+/** Burgundy sound codec emulation. */
+
+#include <core/timermanager.h>
+#include <devices/common/hwcomponent.h>
+#include <devices/deviceregistry.h>
+#include <devices/sound/burgundy.h>
+#include <endianswap.h>
+#include <loguru.hpp>
+#include <memaccess.h>
+
+BurgundyCodec::BurgundyCodec(std::string name) : AwacsBase(name)
+{
+    supports_types(HWCompType::SND_CODEC);
+
+    static int burgundy_sample_rates[1] = { 44100 };
+
+    // Burgundy seems to supports only one sample rate
+    this->sr_table  = burgundy_sample_rates;
+    this->max_sr_id = 1;
+
+    this->set_sample_rate(0); // set default sample rate
+}
+
+uint32_t BurgundyCodec::snd_ctrl_read(uint32_t offset, int size) {
+    uint32_t result = 0;
+
+    switch (offset) {
+    case AWAC_CODEC_CTRL_REG:
+        result = this->last_ctrl_data;
+        break;
+    case AWAC_CODEC_STATUS_REG:
+        result = (this->first_valid << 23) | BURGUNDY_READY |
+                 (this->byte_counter << 14) | (this->read_pos << 12) |
+                 (this->data_byte << 4);
+        break;
+    default:
+        LOG_F(ERROR, "%s: read from unsupported register 0x%X", this->name.c_str(),
+              offset);
+    }
+
+    return BYTESWAP_32(result);
+}
+
+void BurgundyCodec::snd_ctrl_write(uint32_t offset, uint32_t value, int size) {
+    uint8_t reg_addr, cur_byte, last_byte;
+
+    value = BYTESWAP_32(value);
+
+    switch (offset) {
+    case AWAC_CODEC_CTRL_REG:
+        this->last_ctrl_data = value;
+        reg_addr  = (value >> 12) & 0xFF;
+        cur_byte  = (value >>  8) & 3;
+        last_byte = (value >> 10) & 3;
+        if (value & BURGUNDY_REG_WR) {
+            uint32_t mask = 0xFFU << (cur_byte * 8);
+            this->reg_array[reg_addr] = (this->reg_array[reg_addr] & ~mask) |
+                                        ((value & 0xFFU) << (cur_byte * 8));
+        } else {
+            this->reg_addr  = reg_addr;
+            this->read_pos  = cur_byte;
+            this->data_byte = (this->reg_array[reg_addr] >> (cur_byte * 8)) & 0xFFU;
+            this->first_valid = 1;
+
+            TimerManager::get_instance()->add_oneshot_timer(
+                USECS_TO_NSECS(10), // not sure if this is the correct delay
+                [this]() {
+                    this->first_valid  = 0;
+                    this->byte_counter = (this->byte_counter + 1) & 3;
+            });
+        }
+        break;
+    default:
+        LOG_F(ERROR, "%s: write to unsupported register 0x%X", this->name.c_str(),
+              offset);
+    }
+}
+
+static const DeviceDescription Burgundy_Descriptor = {
+    BurgundyCodec::create, {}, {}
+};
+
+REGISTER_DEVICE(BurgundySnd, Burgundy_Descriptor);

devices/sound/burgundy.h

@@ -0,0 +1,64 @@
+/*
+DingusPPC - The Experimental PowerPC Macintosh emulator
+Copyright (C) 2018-23 divingkatae and maximum
+                      (theweirdo)     spatium
+
+(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
+
+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 3 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, see <https://www.gnu.org/licenses/>.
+*/
+
+/** Burgundy sound codec definitions. */
+
+#ifndef BURGUNDY_H
+#define BURGUNDY_H
+
+#include <devices/common/hwcomponent.h>
+#include <devices/sound/awacs.h>
+
+#include <cinttypes>
+#include <string>
+
+enum {
+    BURGUNDY_REG_WR = 1 << 21,
+    BURGUNDY_READY  = 1 << 22,
+};
+
+/** Number of internal registers implemented in Burgundy. */
+#define BURGUNDY_NUM_REGS   123
+
+class BurgundyCodec : public MacioSndCtrl {
+public:
+    BurgundyCodec(std::string name);
+    ~BurgundyCodec() = default;
+
+    uint32_t    snd_ctrl_read(uint32_t offset, int size);
+    void        snd_ctrl_write(uint32_t offset, uint32_t value, int size);
+
+    static std::unique_ptr<HWComponent> create() {
+        return std::unique_ptr<BurgundyCodec>(new BurgundyCodec("Burgundy"));
+    }
+
+private:
+    uint32_t    last_ctrl_data  = 0;
+    uint8_t     byte_counter    = 0;
+    uint8_t     reg_addr        = 0;
+    uint8_t     first_valid     = 0;
+    uint8_t     read_pos        = 0;
+    uint8_t     data_byte       = 0;
+
+    uint32_t    reg_array[BURGUNDY_NUM_REGS] = {};
+};
+
+#endif // BURGUNDY_H

machines/machineyosemite.cpp

@@ -97,7 +97,7 @@ static const PropMap yosemite_settings = {
 };
 
 static vector<string> pmg3nw_devices = {
-    "Grackle", "Dec21154", "Heathrow"
+    "Grackle", "Dec21154", "BurgundySnd", "Heathrow"
 };
 
 static const MachineDescription pmg3nw_descriptor = {