mirror of
https://github.com/dingusdev/dingusppc.git
synced 2024-06-08 00:29:42 +00:00
4f45d7de35
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.
127 lines
4.3 KiB
C++
127 lines
4.3 KiB
C++
/*
|
|
DingusPPC - The Experimental PowerPC Macintosh emulator
|
|
Copyright (C) 2018-24 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/>.
|
|
*/
|
|
|
|
/** @file Constructs a Catalyst (Power Macintosh 7200) machine. */
|
|
|
|
#include <cpu/ppc/ppcemu.h>
|
|
#include <devices/common/machineid.h>
|
|
#include <devices/common/pci/pcidevice.h>
|
|
#include <devices/common/pci/pcihost.h>
|
|
#include <devices/common/scsi/scsicdrom.h>
|
|
#include <devices/common/scsi/scsihd.h>
|
|
#include <devices/memctrl/platinum.h>
|
|
#include <loguru.hpp>
|
|
#include <machines/machinebase.h>
|
|
#include <machines/machinefactory.h>
|
|
#include <machines/machineproperties.h>
|
|
#include <memctrl/memctrlbase.h>
|
|
|
|
#include <string>
|
|
|
|
int initialize_catalyst(std::string& id)
|
|
{
|
|
LOG_F(INFO, "Building machine Catalyst...");
|
|
|
|
PlatinumCtrl* platinum_obj;
|
|
|
|
PCIHost *pci_host = dynamic_cast<PCIHost*>(gMachineObj->get_comp_by_name("Bandit1"));
|
|
|
|
// get (raw) pointer to the I/O controller
|
|
GrandCentral* gc_obj = dynamic_cast<GrandCentral*>(gMachineObj->get_comp_by_name("GrandCentral"));
|
|
|
|
// connect GrandCentral I/O controller to the PCI1 bus
|
|
pci_host->pci_register_device(DEV_FUN(0x10,0), gc_obj);
|
|
|
|
// attach IOBus Device #1 0xF301A000
|
|
gMachineObj->add_device("BoardReg1", std::unique_ptr<BoardRegister>(
|
|
new BoardRegister("Board Register 1",
|
|
0x3F | // pull up all PRSNT bits
|
|
((GET_BIN_PROP("emmo") ^ 1) << 8) | // factory tests (active low)
|
|
(0 << 11) | // 2-bit box ID
|
|
0xE000U // pull up unused bits
|
|
)));
|
|
|
|
gc_obj->attach_iodevice(0, dynamic_cast<BoardRegister*>(gMachineObj->get_comp_by_name("BoardReg1")));
|
|
|
|
// get (raw) pointer to the memory controller
|
|
platinum_obj = dynamic_cast<PlatinumCtrl*>(gMachineObj->get_comp_by_name("Platinum"));
|
|
|
|
// allocate ROM region
|
|
if (!platinum_obj->add_rom_region(0xFFC00000, 0x400000)) {
|
|
LOG_F(ERROR, "Could not allocate ROM region!");
|
|
return -1;
|
|
}
|
|
|
|
// plug 8MB RAM DIMM into slot #0
|
|
platinum_obj->insert_ram_dimm(0, DRAM_CAP_8MB);
|
|
|
|
// allocate and map physical RAM
|
|
platinum_obj->map_phys_ram();
|
|
|
|
std::string cpu = GET_STR_PROP("cpu");
|
|
if (cpu == "601") {
|
|
// init virtual CPU and request MPC601
|
|
ppc_cpu_init(platinum_obj, PPC_VER::MPC601, true, 7833600ULL);
|
|
}
|
|
else if (cpu == "750") {
|
|
// configure CPU clocks
|
|
uint64_t bus_freq = 50000000ULL;
|
|
uint64_t timebase_freq = bus_freq / 4;
|
|
|
|
// initialize virtual CPU and request MPC750 CPU aka G3
|
|
ppc_cpu_init(platinum_obj, PPC_VER::MPC750, false, timebase_freq);
|
|
|
|
// set CPU PLL ratio to 3.5
|
|
ppc_state.spr[SPR::HID1] = 0xE << 28;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const PropMap pm7200_settings = {
|
|
{"rambank1_size",
|
|
new IntProperty(16, vector<uint32_t>({4, 8, 16, 32, 64, 128}))},
|
|
{"rambank2_size",
|
|
new IntProperty( 0, vector<uint32_t>({0, 4, 8, 16, 32, 64, 128}))},
|
|
{"rambank3_size",
|
|
new IntProperty( 0, vector<uint32_t>({0, 4, 8, 16, 32, 64, 128}))},
|
|
{"rambank4_size",
|
|
new IntProperty( 0, vector<uint32_t>({0, 4, 8, 16, 32, 64, 128}))},
|
|
{"emmo",
|
|
new BinProperty(0)},
|
|
{"cpu",
|
|
new StrProperty("601", vector<std::string>({"601", "750"}))},
|
|
};
|
|
|
|
static vector<string> pm7200_devices = {
|
|
"Platinum", "Bandit1", "GrandCentral"
|
|
};
|
|
|
|
static const MachineDescription pm7200_descriptor = {
|
|
.name = "pm7200",
|
|
.description = "Power Macintosh 7200",
|
|
.devices = pm7200_devices,
|
|
.settings = pm7200_settings,
|
|
.init_func = &initialize_catalyst
|
|
};
|
|
|
|
REGISTER_MACHINE(pm7200, pm7200_descriptor);
|