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naomigd.cpp: add two debug-only dipswitches to configure emulation (nw)

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In the first one "enabled" means the dimm board is really emulated and
"disabled" means everything works as before, that is like running a rom cartridge version of the game.
In the second one "yes" means the dimm ram already contains valid game
data when the machine is turned on, "no" means there is no valid data
and the firmware will load it all from the gd-rom.
By default real emulation is disabled and valid data is already present.
This commit is contained in:
yz70s 2020-02-21 18:51:43 +01:00
parent efc6bca341
commit 3965c363e5
2 changed files with 50 additions and 23 deletions
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69
src/mame/machine/naomigd.cpp
View File

@ -512,8 +512,19 @@ WRITE32_MEMBER(idegdrom_device::ide_cs1_w)
// The board
static INPUT_PORTS_START(gdrom_board_ioports)
PORT_START("DEBUG ONLY")
PORT_DIPNAME(0x01, 0x00, "Full emulation") PORT_DIPLOCATION("DEBUG:1")
PORT_DIPSETTING(0x01, "Enabled")
PORT_DIPSETTING(0x00, "Disabled")
PORT_DIPNAME(0x02, 0x02, "Initialized") PORT_DIPLOCATION("DEBUG:2")
PORT_DIPSETTING(0x02, "Yes")
PORT_DIPSETTING(0x00, "No")
INPUT_PORTS_END
naomi_gdrom_board::naomi_gdrom_board(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: naomi_board(mconfig, NAOMI_GDROM_BOARD, tag, owner, clock),
work_mode(0),
m_maincpu(*this, "dimmcpu"),
m_securitycpu(*this, "pic"),
m_i2c0(*this, "i2c_0"),
@ -521,6 +532,7 @@ naomi_gdrom_board::naomi_gdrom_board(const machine_config &mconfig, const char *
m_eeprom(*this, "eeprom"),
m_315_6154(*this, "pci:00.0"),
m_idegdrom(*this, "pci:01.0"),
m_debug_dipswitches(*this, "DEBUG ONLY"),
picdata(*this, finder_base::DUMMY_TAG),
dimm_command(0xffff),
dimm_offsetl(0xffff),
@ -872,16 +884,6 @@ void naomi_gdrom_board::device_start()
uint64_t key;
uint8_t netpic = 0;
logerror("Work mode is %d\n", work_mode);
if (work_mode != 0)
{
dimm_command = 0;
dimm_offsetl = 0;
dimm_parameterl = 0;
dimm_parameterh = 0;
}
if(picdata) {
if(picdata.length() >= 0x4000) {
printf("Real PIC binary found\n");
@ -907,7 +909,7 @@ void naomi_gdrom_board::device_start()
memcpy(name, picdata+33, 7);
memcpy(name+7, picdata+25, 7);
key =((uint64_t(picdata[0x31]) << 56) |
key = ((uint64_t(picdata[0x31]) << 56) |
(uint64_t(picdata[0x32]) << 48) |
(uint64_t(picdata[0x33]) << 40) |
(uint64_t(picdata[0x34]) << 32) |
@ -977,10 +979,7 @@ void naomi_gdrom_board::device_start()
uint32_t file_rounded_size = (file_size + 2047) & -2048;
for (dimm_data_size = 4096; dimm_data_size < file_rounded_size; dimm_data_size <<= 1);
dimm_data = auto_alloc_array(machine(), uint8_t, dimm_data_size);
if (work_mode == 0)
dimm_des_data = dimm_data;
else
dimm_des_data = auto_alloc_array(machine(), uint8_t, dimm_data_size);
dimm_des_data = auto_alloc_array(machine(), uint8_t, dimm_data_size);
if (dimm_data_size != file_rounded_size)
memset(dimm_data + file_rounded_size, 0, dimm_data_size - file_rounded_size);
@ -1020,11 +1019,43 @@ void naomi_gdrom_board::device_start()
void naomi_gdrom_board::device_reset()
{
int dips = m_debug_dipswitches->read();
naomi_board::device_reset();
dimm_cur_address = 0;
if (dips & 1)
{
if (dips & 2)
work_mode = 1; // real emulation, dimm ram contains valid game data
else
work_mode = 2; // real emulation, dimm ram not initialized
}
else
work_mode = 0; // default cartridge-like mode
logerror("Work mode is %d\n", work_mode);
if (work_mode != 0)
{
dimm_command = 0;
dimm_offsetl = 0;
dimm_parameterl = 0;
dimm_parameterh = 0;
m_315_6154->memory()->install_ram(0x10000000, 0x10000000 + dimm_data_size - 1, dimm_des_data);
if (work_mode == 2) // invalidate dimm memory contents by setting the first 2048 bytes to 0
memset(dimm_des_data, 0, 2048);
}
else
{
m_maincpu->set_disable();
m_securitycpu->set_disable();
m_315_6154->memory()->unmap_readwrite(0x10000000, 0x10000000 + dimm_data_size - 1);
}
dimm_cur_address = 0;
}
ioport_constructor naomi_gdrom_board::device_input_ports() const
{
return INPUT_PORTS_NAME(gdrom_board_ioports);
}
void naomi_gdrom_board::board_setup_address(uint32_t address, bool is_dma)
@ -1064,7 +1095,6 @@ void naomi_gdrom_board::device_add_mconfig(machine_config &config)
m_maincpu->set_addrmap(AS_PROGRAM, &naomi_gdrom_board::sh4_map);
m_maincpu->set_addrmap(AS_IO, &naomi_gdrom_board::sh4_io_map);
PCI_ROOT(config, "pci", 0);
SEGA315_6154(config, m_315_6154, 0);
m_315_6154->set_addrmap(sega_315_6154_device::AS_PCI_MEMORY, &naomi_gdrom_board::pci_map);
@ -1080,11 +1110,6 @@ void naomi_gdrom_board::device_add_mconfig(machine_config &config)
m_i2c1->set_e0(1);
m_i2c1->set_wc(1);
EEPROM_93C46_8BIT(config, m_eeprom, 0);
if (work_mode == 0)
{
m_maincpu->set_disable();
m_securitycpu->set_disable();
}
}
// DIMM firmwares:

4
src/mame/machine/naomigd.h
View File

@ -127,6 +127,7 @@ public:
protected:
virtual void device_start() override;
virtual void device_reset() override;
virtual ioport_constructor device_input_ports() const override;
virtual void board_setup_address(uint32_t address, bool is_dma) override;
virtual void board_get_buffer(uint8_t *&base, uint32_t &limit) override;
@ -134,7 +135,7 @@ protected:
private:
enum { FILENAME_LENGTH=24 };
const int work_mode = 0; // set to 1 and rebuild to enable the cpus and full dimm board emulation
int work_mode; // set it different from 0 to enable the cpus and full dimm board emulation
required_device<sh4_device> m_maincpu;
required_device<pic16c622_device> m_securitycpu;
@ -143,6 +144,7 @@ private:
required_device<eeprom_serial_93cxx_device> m_eeprom;
required_device<sega_315_6154_device> m_315_6154;
required_device<idegdrom_device> m_idegdrom;
required_ioport m_debug_dipswitches;
const char *image_tag;
optional_region_ptr<uint8_t> picdata;