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The first option is a flag that enables MPC601 (POWER) instructions for CPUs that are not MPC601. This can be useful for the following reasons: 1) To produce results similar to classic Mac OS which emulates MPC601 instructions on CPUs that don't implement MPC601 instructions. This option is used to compare the risu traces produced in Mac OS 9 on a G3 or G4 with DPPC. 2) May increase performance in apps that use POWER instructions on emulated machines with CPUs that are not MPC601. It is not known if any such apps exist but there could be since Apple included MPC601 emulation in classic Mac OS.
131 lines
4.1 KiB
C++
131 lines
4.1 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-24 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 Construct a PDM-style Power Macintosh machine.
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Author: Max Poliakovski
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*/
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#include <cpu/ppc/ppcemu.h>
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#include <devices/common/hwcomponent.h>
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#include <devices/common/machineid.h>
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#include <devices/common/mmiodevice.h>
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#include <devices/common/scsi/scsi.h>
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#include <devices/common/scsi/scsicdrom.h>
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#include <devices/common/scsi/scsihd.h>
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#include <devices/memctrl/hmc.h>
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#include <loguru.hpp>
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#include <machines/machinebase.h>
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#include <machines/machinefactory.h>
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#include <machines/machineproperties.h>
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#include <string>
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#include <vector>
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int initialize_pdm(std::string& id)
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{
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LOG_F(INFO, "Building machine PDM...");
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uint16_t machine_id;
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// get raw pointer to HMC object
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HMC* hmc_obj = dynamic_cast<HMC*>(gMachineObj->get_comp_by_name("HMC"));
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if (id == "pm6100") {
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machine_id = 0x3011;
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} else if (id == "pm7100") {
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machine_id = 0x3012;
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} else if (id == "pm8100") {
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machine_id = 0x3013;
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} else {
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LOG_F(ERROR, "Unknown machine ID: %s!", id.c_str());
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return -1;
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}
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// create machine ID register
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gMachineObj->add_device("MachineID", std::unique_ptr<NubusMacID>(new NubusMacID(machine_id)));
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hmc_obj->add_mmio_region(0x5FFFFFFC, 4,
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dynamic_cast<MMIODevice*>(gMachineObj->get_comp_by_name("MachineID")));
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// allocate ROM region
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if (!hmc_obj->add_rom_region(0x40000000, 0x400000)) {
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LOG_F(ERROR, "Could not allocate ROM region!");
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return -1;
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}
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// mirror ROM to 0xFFC00000 for a PowerPC CPU to start
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if (!hmc_obj->add_mem_mirror(0xFFC00000, 0x40000000)) {
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LOG_F(ERROR, "Could not create ROM mirror!");
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return -1;
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}
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uint32_t bank_a_size = GET_INT_PROP("rambank1_size");
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uint32_t bank_b_size = GET_INT_PROP("rambank2_size");
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if (bank_b_size && bank_a_size != bank_b_size) {
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LOG_F(ERROR, "rambank1_size and rambank2_size should have equal size");
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return -1;
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}
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if (hmc_obj->install_ram(BANK_SIZE_8MB, bank_a_size << 20, bank_b_size << 20)) {
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LOG_F(ERROR, "Failed to allocate RAM!");
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return -1;
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}
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// Init virtual CPU and request MPC601
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ppc_cpu_init(hmc_obj, PPC_VER::MPC601, true, 7812500ULL);
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return 0;
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}
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// Monitors supported by the PDM on-board video.
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// see displayid.cpp for the full list of supported monitor IDs.
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static const vector<string> PDMBuiltinMonitorIDs = {
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"PortraitGS", "MacRGB12in", "MacRGB15in", "HiRes12-14in", "VGA-SVGA",
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"MacRGB16in", "Multiscan15in", "Multiscan17in", "Multiscan20in",
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"NotConnected"
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};
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static const PropMap pm6100_settings = {
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{"rambank1_size",
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new IntProperty(0, vector<uint32_t>({0, 2, 4, 8, 16, 32, 64, 128}))},
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{"rambank2_size",
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new IntProperty(0, vector<uint32_t>({0, 2, 4, 8, 16, 32, 64, 128}))},
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{"mon_id",
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new StrProperty("HiRes12-14in", PDMBuiltinMonitorIDs)},
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{"emmo",
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new BinProperty(0)},
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};
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static vector<string> pm6100_devices = {
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"HMC", "Amic"
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};
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static const MachineDescription pm6100_descriptor = {
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.name = "pm6100",
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.description = "Power Macintosh 6100",
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.devices = pm6100_devices,
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.settings = pm6100_settings,
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.init_func = initialize_pdm
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};
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// self-registration with the MachineFactory
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REGISTER_MACHINE(pm6100, pm6100_descriptor);
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