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(MESS) nes_bandai: added emulation of the barcode reader for

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Datach Joint ROM System unit, making playable most games 
using it. [Fabio Priuli]
This commit is contained in:
Fabio Priuli 2014-02-12 14:56:23 +00:00
parent e2cf4f8b34
commit 0b78c37106
2 changed files with 145 additions and 6 deletions
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128
src/mess/machine/nes_bandai.c
View File

@ -14,13 +14,12 @@
* Bandai LZ93D50 + 24C01 EEPROM [mapper 159]
* Bandai LZ93D50 + 24C02 EEPROM [mapper 16]
* Bandai Famicom Jump 2 (aka LZ93D50 + SRAM) [mapper 153]
* Bandai LZ93D50 + Datach Barcode reader [mapper 34]
* Bandai LZ93D50 + Datach Barcode reader [mapper 157]
* Bandai Karaoke Studio [mapper 188]
* Bandai Oeka Kids [mapper 96]
TODO:
- investigate why EEPROM does not work
- try to implement some sort of Datach emulation
- try to implement some sort of Karaoke emulation
- add support to the PPU for the code necessary to Oeka Kids games (also needed by UNL-DANCE2000 PCB)
- check the cause for the flickering in Famicom Jump 2
@ -42,6 +41,7 @@
#define LOG_MMC(x) do { if (VERBOSE) logerror x; } while (0)
//-------------------------------------------------
// constructor
//-------------------------------------------------
@ -104,7 +104,8 @@ nes_lz93d50_24c02_device::nes_lz93d50_24c02_device(const machine_config &mconfig
}
nes_datach_device::nes_datach_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: nes_lz93d50_device(mconfig, NES_DATACH, "NES Cart Bandai Datach PCB", tag, owner, clock, "nes_datach", __FILE__)
: nes_lz93d50_device(mconfig, NES_DATACH, "NES Cart Bandai Datach PCB", tag, owner, clock, "nes_datach", __FILE__),
m_reader(*this, "datach")
{
}
@ -190,6 +191,31 @@ void nes_lz93d50_24c01_device::pcb_reset()
m_i2c_dir = 0;
}
void nes_datach_device::device_start()
{
common_start();
irq_timer = timer_alloc(TIMER_IRQ);
serial_timer = timer_alloc(TIMER_SERIAL);
irq_timer->adjust(attotime::zero, 0, machine().device<cpu_device>("maincpu")->cycles_to_attotime(1));
serial_timer->adjust(attotime::zero, 0, machine().device<cpu_device>("maincpu")->cycles_to_attotime(1000));
save_item(NAME(m_irq_enable));
save_item(NAME(m_irq_count));
save_item(NAME(m_datach_latch));
}
void nes_datach_device::pcb_reset()
{
m_chr_source = m_vrom_chunks ? CHRROM : CHRRAM;
prg16_89ab(0);
prg16_cdef(m_prg_chunks - 1);
chr8(0, m_chr_source);
m_irq_enable = 0;
m_irq_count = 0;
m_datach_latch = 0;
}
void nes_fjump2_device::device_start()
{
common_start();
@ -517,3 +543,99 @@ WRITE8_MEMBER(nes_fjump2_device::write_h)
break;
}
}
/*-------------------------------------------------
Bandai LZ93D50 + Datach barcode reader emulation
Games: Datach Games
iNES: mappers 157
In MESS: Supported
TODO: Datach carts should actually be handled
separately! Original carts were minicarts to be
inserted in a smaller slot of the Barcode reader
FC cart. The Barcode reader acts as a passthrough
but it has no internal ROM (it does not work if
you don't have any minicart inserted)
TODO2: This class should be derived from the
LZ93D50 + X24C02 class, since the main board
has this EEPROM. Moreover, Datach - Battle Rush
has a second X24C01 EEPROM that we don't emulate yet...
-------------------------------------------------*/
void nes_datach_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
if (id == TIMER_IRQ)
{
if (m_irq_enable)
{
// 16bit counter, IRQ fired when the counter goes from 1 to 0
// after firing, the counter is *not* reloaded, but next clock
// counter wraps around from 0 to 0xffff
if (!m_irq_count)
m_irq_count = 0xffff;
else
m_irq_count--;
if (!m_irq_count)
{
machine().device("maincpu")->execute().set_input_line(M6502_IRQ_LINE, ASSERT_LINE);
m_irq_enable = 0;
}
}
}
if (id == TIMER_SERIAL)
{
m_datach_latch = (m_reader->read_pixel() << 3);
}
}
READ8_MEMBER(nes_datach_device::read_m)
{
LOG_MMC(("Datach read_m, offset: %04x\n", offset));
return m_datach_latch;
}
WRITE8_MEMBER(nes_datach_device::write_h)
{
LOG_MMC(("Datach write_h, offset: %04x, data: %02x\n", offset, data));
switch (offset & 0x0f)
{
case 0: case 1: case 2: case 3:
case 4: case 5: case 6: case 7:
// these don't switch CHR bank, but are SCL output
// of the oncart I2C EEPROM!
break;
case 0x0d:
// these should go to the I2C EEPROM on the Datach base
// but SDA line is shared with the oncart I2C EEPROM if
// there is one (only in Datach - Battle Rush )
break;
default:
fcg_write(space, offset & 0x0f, data, mem_mask);
break;
}
}
//-------------------------------------------------
// BARCODE READER DEVICE
//-------------------------------------------------
MACHINE_CONFIG_FRAGMENT( bandai_datach )
MCFG_BARCODE_READER_ADD("datach")
MACHINE_CONFIG_END
machine_config_constructor nes_datach_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( bandai_datach );
}

23
src/mess/machine/nes_bandai.h
View File

@ -3,6 +3,7 @@
#include "machine/nes_nxrom.h"
#include "machine/i2cmem.h"
#include "machine/bcreader.h"
// ======================> nes_karaokestudio_device
@ -97,6 +98,7 @@ public:
nes_lz93d50_24c01_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
nes_lz93d50_24c01_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// device-level overrides
virtual void device_start();
virtual machine_config_constructor device_mconfig_additions() const;
virtual DECLARE_READ8_MEMBER(read_m);
@ -118,6 +120,7 @@ public:
// construction/destruction
nes_lz93d50_24c02_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// device-level overrides
virtual machine_config_constructor device_mconfig_additions() const;
};
@ -130,7 +133,21 @@ public:
// construction/destruction
nes_datach_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// TODO: add some kind of barcode reader emulation
// device-level overrides
virtual void device_start();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
virtual machine_config_constructor device_mconfig_additions() const;
virtual DECLARE_READ8_MEMBER(read_m);
virtual DECLARE_WRITE8_MEMBER(write_h);
virtual void pcb_reset();
protected:
UINT8 m_datach_latch;
required_device<barcode_reader_device> m_reader;
static const device_timer_id TIMER_SERIAL = 1;
emu_timer *serial_timer;
};
@ -149,13 +166,13 @@ public:
virtual DECLARE_WRITE8_MEMBER(write_h);
virtual void pcb_reset();
private:
protected:
void set_prg();
UINT8 m_reg[5];
};
// device type definition
extern const device_type NES_KARAOKESTUDIO;
extern const device_type NES_OEKAKIDS;