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https://github.com/dingusdev/dingusppc.git
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Barebones workings for serial
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@ -121,6 +121,15 @@ uint32_t HeathrowIC::read(uint32_t reg_start, uint32_t offset, int size) {
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case 8:
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case 8:
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res = dma_read(offset - 0x8000, size);
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res = dma_read(offset - 0x8000, size);
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break;
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break;
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case 0x13:
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if ((offset - 0x13000) >= 0x20) {
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LOG_F(INFO, "Serial: Reading from Channel A \n");
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}
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else {
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LOG_F(INFO, "Serial: Reading from Channel B \n");
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}
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res = this->serial->read(offset - 0x13000);
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break;
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case 0x14:
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case 0x14:
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res = this->screamer->snd_ctrl_read(offset - 0x14000, size);
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res = this->screamer->snd_ctrl_read(offset - 0x14000, size);
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break;
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break;
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@ -151,6 +160,14 @@ void HeathrowIC::write(uint32_t reg_start, uint32_t offset, uint32_t value, int
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case 8:
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case 8:
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dma_write(offset - 0x8000, value, size);
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dma_write(offset - 0x8000, value, size);
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break;
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break;
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case 0x13:
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if ((offset - 0x13000) >= 0x20) {
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LOG_F(INFO, "Serial: Writing to Channel A \n");
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} else {
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LOG_F(INFO, "Serial: Writing to Channel B \n");
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}
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this->serial->write(offset - 0x13000, value);
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break;
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case 0x14:
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case 0x14:
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this->screamer->snd_ctrl_write(offset - 0x14000, value, size);
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this->screamer->snd_ctrl_write(offset - 0x14000, value, size);
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break;
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break;
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@ -60,6 +60,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include "pcidevice.h"
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#include "pcidevice.h"
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#include "pcihost.h"
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#include "pcihost.h"
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#include "viacuda.h"
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#include "viacuda.h"
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#include "z85c30.h"
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#include <cinttypes>
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#include <cinttypes>
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/**
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/**
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@ -147,6 +148,7 @@ private:
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ViaCuda* viacuda; /* VIA cell with Cuda MCU attached to it */
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ViaCuda* viacuda; /* VIA cell with Cuda MCU attached to it */
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NVram* nvram; /* NVRAM cell */
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NVram* nvram; /* NVRAM cell */
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AWACDevice* screamer; /* Screamer audio codec instance */
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AWACDevice* screamer; /* Screamer audio codec instance */
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Z85C30* serial; /* Serial cell */
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DMAChannel* snd_out_dma;
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DMAChannel* snd_out_dma;
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};
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};
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70
devices/z85c30.cpp
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70
devices/z85c30.cpp
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@ -0,0 +1,70 @@
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/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-20 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "devices/z85c30.h"
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#include <cinttypes>
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#include <thirdparty/loguru/loguru.hpp>
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Z85C30::Z85C30() {
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write_registers[0x04] = 0x04;
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write_registers[0x09] = 0xC0;
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write_registers[0x0B] = 0x08;
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write_registers[0x0E] = 0x30;
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write_registers[0x0F] = 0xF8;
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read_registers[0x00] = 0x44;
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read_registers[0x01] = 0x06;
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}
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Z85C30::~Z85C30() {
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}
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uint8_t Z85C30::read(uint8_t reg) {
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LOG_F(INFO, "Reading from register %d: 0x%x \n", reg, this->write_registers[reg]);
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return this->write_registers[reg];
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}
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void Z85C30::write(uint8_t reg, uint8_t value) {
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LOG_F(INFO, "Writing value 0x%x to register %d \n", value, reg);
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if (reg == 0x07) {
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if (this->enable_wr7_alt) {
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this->wr7_alt = value;
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}
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else {
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this->write_registers[0x07] = value;
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}
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}
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else {
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this->write_registers[reg] = value;
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}
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if (reg == 0x0F) {
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if (this->write_registers[0x0F] & 0x1) {
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this->enable_wr7_alt = true;
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}
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else{
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this->enable_wr7_alt = false;
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}
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}
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}
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49
devices/z85c30.h
Normal file
49
devices/z85c30.h
Normal file
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@ -0,0 +1,49 @@
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/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-20 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** @file Descriptor-based direct memory access emulation.
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Official documentation can be found in the fifth chapter of the book
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"Macintosh Technology in the Common Hardware Reference Platform"
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by Apple Computer, Inc.
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*/
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#ifndef Z85C30_H
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#define Z85C30_H
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#include <cinttypes>
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class Z85C30 {
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public:
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Z85C30();
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~Z85C30();
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uint8_t read(uint8_t reg);
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void write(uint8_t reg, uint8_t value);
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private:
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uint8_t read_registers[16] = {0x00};
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uint8_t write_registers[16] = {0x00};
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uint8_t wr7_alt = 0x20;
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bool enable_wr7_alt = false;
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};
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#endif /* Z85C30_H */
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