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cpc464: force DDI-1 to use only ROM slot 7, should fix issues with Speedlock protected games.

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This commit is contained in:
mahlemiut 2015-10-17 14:30:51 +13:00
parent 9f91d26cec
commit bc622e4fa6
3 changed files with 27 additions and 2 deletions
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23
src/devices/bus/cpc/ddi1.c
View File

@ -23,7 +23,7 @@ SLOT_INTERFACE_END
//-------------------------------------------------
ROM_START( cpc_ddi1 )
ROM_REGION( 0x4000, "exp_rom", 0 )
ROM_REGION( 0x4000, "disc_rom", 0 )
ROM_LOAD("cpcados.rom", 0x0000, 0x4000, CRC(1fe22ecd) SHA1(39102c8e9cb55fcc0b9b62098780ed4a3cb6a4bb))
ROM_END
@ -80,6 +80,7 @@ void cpc_ddi1_device::device_start()
space.install_write_handler(0xfa7e,0xfa7f,0,0,write8_delegate(FUNC(cpc_ddi1_device::motor_w),this));
space.install_readwrite_handler(0xfb7e,0xfb7f,0,0,read8_delegate(FUNC(cpc_ddi1_device::fdc_r),this),write8_delegate(FUNC(cpc_ddi1_device::fdc_w),this));
space.install_write_handler(0xdf00,0xdfff,0,0,write8_delegate(FUNC(cpc_ddi1_device::rombank_w),this));
}
//-------------------------------------------------
@ -88,6 +89,7 @@ void cpc_ddi1_device::device_start()
void cpc_ddi1_device::device_reset()
{
m_rom_active = false;
}
WRITE8_MEMBER(cpc_ddi1_device::motor_w)
@ -137,3 +139,22 @@ READ8_MEMBER(cpc_ddi1_device::fdc_r)
}
return data;
}
WRITE8_MEMBER(cpc_ddi1_device::rombank_w)
{
if(data == 0x07)
m_rom_active = true;
else
m_rom_active = false;
m_slot->rom_select(space,0,data);
}
void cpc_ddi1_device::set_mapping()
{
if(m_rom_active)
{
UINT8* ROM = memregion("disc_rom")->base();
membank(":bank7")->set_base(ROM);
membank(":bank8")->set_base(ROM+0x2000);
}
}

4
src/devices/bus/cpc/ddi1.h
View File

@ -25,10 +25,12 @@ public:
// optional information overrides
virtual const rom_entry *device_rom_region() const;
virtual machine_config_constructor device_mconfig_additions() const;
virtual void set_mapping();
DECLARE_WRITE8_MEMBER(motor_w);
DECLARE_WRITE8_MEMBER(fdc_w);
DECLARE_READ8_MEMBER(fdc_r);
DECLARE_WRITE8_MEMBER(rombank_w);
protected:
// device-level overrides
virtual void device_start();
@ -39,6 +41,8 @@ private:
required_device<upd765_family_device> m_fdc;
required_device<floppy_connector> m_connector;
bool m_rom_active;
};
// device type definition

2
src/mame/machine/amstrad.c
View File

@ -1972,7 +1972,7 @@ WRITE8_MEMBER(amstrad_state::rom_select)
exp_port = temp_dev->subdevice<cpc_expansion_slot_device>("exp");
}
amstrad_setUpperRom();
amstrad_rethinkMemory();
}
/* Offset handler for write */