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(MESS) some meat added to the bone (nothing relevant, though). nw.

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This commit is contained in:
Fabio Priuli 2013-06-24 10:30:07 +00:00
parent 7c27ec1308
commit 0155e9f64d
2 changed files with 63 additions and 3 deletions
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53
src/mess/machine/sns_sgb.c
View File

@ -24,7 +24,9 @@ const device_type SNS_LOROM_SUPERGB = &device_creator<sns_rom_sgb_device>;
sns_rom_sgb_device::sns_rom_sgb_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: sns_rom_device(mconfig, SNS_LOROM_SUPERGB, "SNES Super Game Boy Cart", tag, owner, clock, "sns_rom_sgb", __FILE__),
m_gb_cpu(*this, "supergb"),
m_gb_cpu(*this, "sgb_cpu"),
m_gb_snd(*this, "sgb_snd"),
m_gb_lcd(*this, "sgb_lcd"),
m_cartslot(*this, "gb_slot")
{
}
@ -66,14 +68,53 @@ WRITE8_MEMBER(sns_rom_sgb_device::gb_ram_w)
m_cartslot->write_ram(space, offset, data);
}
READ8_MEMBER(sns_rom_sgb_device::gb_echo_r)
{
return space.read_byte(0xc000 + offset);
}
WRITE8_MEMBER(sns_rom_sgb_device::gb_echo_w)
{
return space.write_byte(0xc000 + offset, data);
}
READ8_MEMBER(sns_rom_sgb_device::gb_io_r)
{
return 0;
}
WRITE8_MEMBER(sns_rom_sgb_device::gb_io_w)
{
}
READ8_MEMBER(sns_rom_sgb_device::gb_ie_r)
{
// return m_gb_cpu->get_ie();
return 0;
}
WRITE8_MEMBER(sns_rom_sgb_device::gb_ie_w)
{
// m_gb_cpu->set_ie(data & 0x1f);
}
static ADDRESS_MAP_START(supergb_map, AS_PROGRAM, 8, sns_rom_sgb_device )
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x7fff) AM_READWRITE(gb_cart_r, gb_bank_w)
AM_RANGE(0x8000, 0x9fff) AM_DEVREADWRITE("sgb_lcd", sgb_lcd_device, vram_r, vram_w) /* 8k VRAM */
AM_RANGE(0xa000, 0xbfff) AM_READWRITE(gb_ram_r, gb_ram_w ) /* 8k switched RAM bank (cartridge) */
AM_RANGE(0xc000, 0xfdff) AM_RAM /* 8k low RAM, echo RAM */
AM_RANGE(0xc000, 0xdfff) AM_RAM /* 8k low RAM */
AM_RANGE(0xe000, 0xfdff) AM_READWRITE(gb_echo_r, gb_echo_w) /* echo RAM */
AM_RANGE(0xff00, 0xff0f) AM_READWRITE(gb_io_r, gb_io_w) /* I/O */
AM_RANGE(0xff10, 0xff26) AM_DEVREADWRITE("sgb_snd", gameboy_sound_device, sound_r, sound_w) /* sound registers */
AM_RANGE(0xfe00, 0xfeff) AM_DEVREADWRITE("sgb_lcd", sgb_lcd_device, oam_r, oam_w) /* OAM RAM */
AM_RANGE(0xff27, 0xff2f) AM_NOP /* unused */
AM_RANGE(0xff30, 0xff3f) AM_DEVREADWRITE("sgb_snd", gameboy_sound_device, wave_r, wave_w) /* Wave RAM */
AM_RANGE(0xff40, 0xff7f) AM_DEVREADWRITE("sgb_lcd", sgb_lcd_device, video_r, video_w) /* also disable bios?? */ /* Video controller & BIOS flip-flop */
AM_RANGE(0xff80, 0xfffe) AM_RAM /* High RAM */
AM_RANGE(0xffff, 0xffff) AM_READWRITE(gb_ie_r, gb_ie_w) /* Interrupt enable register */
ADDRESS_MAP_END
@ -84,14 +125,20 @@ WRITE8_MEMBER( sns_rom_sgb_device::gb_timer_callback )
static SLOT_INTERFACE_START(supergb_cart)
SLOT_INTERFACE_INTERNAL("rom", GB_STD_ROM)
SLOT_INTERFACE_INTERNAL("rom_mbc1", GB_ROM_MBC1)
SLOT_INTERFACE_END
static MACHINE_CONFIG_FRAGMENT( supergb )
MCFG_CPU_ADD("supergb", LR35902, 4295454) /* 4.295454 MHz */
MCFG_CPU_ADD("sgb_cpu", LR35902, 4295454) /* 4.295454 MHz */
MCFG_CPU_PROGRAM_MAP(supergb_map)
MCFG_LR35902_TIMER_CB(WRITE8(sns_rom_sgb_device, gb_timer_callback))
MCFG_LR35902_HALT_BUG
MCFG_GB_LCD_SGB_ADD("sgb_lcd")
MCFG_SOUND_ADD("sgb_snd", GAMEBOY, 0)
MCFG_GB_CARTRIDGE_ADD("gb_slot", supergb_cart, NULL)
MACHINE_CONFIG_END

13
src/mess/machine/sns_sgb.h
View File

@ -4,7 +4,12 @@
#include "machine/sns_slot.h"
#include "machine/sns_rom.h"
//#include "cpu/lr35902/lr35902.h"
#include "machine/gb_slot.h"
#include "machine/gb_rom.h"
#include "machine/gb_mbc.h"
#include "video/gb_lcd.h"
#include "audio/gb.h"
// ======================> sns_rom_sgb_device
@ -30,9 +35,17 @@ public:
virtual DECLARE_WRITE8_MEMBER(gb_bank_w);
virtual DECLARE_READ8_MEMBER(gb_ram_r);
virtual DECLARE_WRITE8_MEMBER(gb_ram_w);
virtual DECLARE_READ8_MEMBER(gb_echo_r);
virtual DECLARE_WRITE8_MEMBER(gb_echo_w);
virtual DECLARE_READ8_MEMBER(gb_io_r);
virtual DECLARE_WRITE8_MEMBER(gb_io_w);
virtual DECLARE_READ8_MEMBER(gb_ie_r);
virtual DECLARE_WRITE8_MEMBER(gb_ie_w);
virtual DECLARE_WRITE8_MEMBER(gb_timer_callback);
required_device<cpu_device> m_gb_cpu;
required_device<gameboy_sound_device> m_gb_snd;
required_device<sgb_lcd_device> m_gb_lcd;
required_device<gb_cart_slot_device> m_cartslot;
void lcd_render(UINT32 *source);