mirror of
https://github.com/holub/mame
synced 2025-06-05 12:26:35 +03:00
158 lines
4.6 KiB
C
158 lines
4.6 KiB
C
/**********************************************************************
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Dela 7x8K EPROM cartridge emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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#include "c64_dela_ep7x8.h"
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//**************************************************************************
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// DEVICE DEFINITIONS
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//**************************************************************************
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const device_type C64_DELA_EP7X8 = &device_creator<c64_dela_ep7x8_cartridge_device>;
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//-------------------------------------------------
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// ROM( c64_dela_ep7x8 )
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//-------------------------------------------------
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ROM_START( c64_dela_ep7x8 )
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ROM_REGION( 0x10000, "rom", 0 )
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ROM_CART_LOAD( "rom1", 0x2000, 0x2000, ROM_MIRROR )
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ROM_CART_LOAD( "rom2", 0x4000, 0x2000, ROM_MIRROR )
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ROM_CART_LOAD( "rom3", 0x6000, 0x2000, ROM_MIRROR )
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ROM_CART_LOAD( "rom4", 0x8000, 0x2000, ROM_MIRROR )
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ROM_CART_LOAD( "rom5", 0xa000, 0x2000, ROM_MIRROR )
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ROM_CART_LOAD( "rom6", 0xc000, 0x2000, ROM_MIRROR )
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ROM_CART_LOAD( "rom7", 0xe000, 0x2000, ROM_MIRROR )
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ROM_END
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//-------------------------------------------------
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// rom_region - device-specific ROM region
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//-------------------------------------------------
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const rom_entry *c64_dela_ep7x8_cartridge_device::device_rom_region() const
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{
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return ROM_NAME( c64_dela_ep7x8 );
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}
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//-------------------------------------------------
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// MACHINE_CONFIG_FRAGMENT( c64_dela_ep7x8 )
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//-------------------------------------------------
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static MACHINE_CONFIG_FRAGMENT( c64_dela_ep7x8 )
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MCFG_CARTSLOT_ADD("rom1")
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MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
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MCFG_CARTSLOT_ADD("rom2")
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MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
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MCFG_CARTSLOT_ADD("rom3")
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MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
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MCFG_CARTSLOT_ADD("rom4")
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MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
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MCFG_CARTSLOT_ADD("rom5")
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MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
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MCFG_CARTSLOT_ADD("rom6")
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MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
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MCFG_CARTSLOT_ADD("rom7")
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MCFG_CARTSLOT_EXTENSION_LIST("rom,bin")
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MACHINE_CONFIG_END
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//-------------------------------------------------
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// machine_config_additions - device-specific
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// machine configurations
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//-------------------------------------------------
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machine_config_constructor c64_dela_ep7x8_cartridge_device::device_mconfig_additions() const
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{
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return MACHINE_CONFIG_NAME( c64_dela_ep7x8 );
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// c64_dela_ep7x8_cartridge_device - constructor
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//-------------------------------------------------
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c64_dela_ep7x8_cartridge_device::c64_dela_ep7x8_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) :
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device_t(mconfig, C64_DELA_EP7X8, "C64 Dela 7x8KB EPROM cartridge", tag, owner, clock),
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device_c64_expansion_card_interface(mconfig, *this)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void c64_dela_ep7x8_cartridge_device::device_start()
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{
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m_rom = memregion("rom")->base();
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// state saving
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save_item(NAME(m_bank));
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void c64_dela_ep7x8_cartridge_device::device_reset()
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{
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m_bank = 0xfe;
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m_exrom = 0;
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}
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//-------------------------------------------------
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// c64_cd_r - cartridge data read
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//-------------------------------------------------
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UINT8 c64_dela_ep7x8_cartridge_device::c64_cd_r(address_space &space, offs_t offset, int ba, int roml, int romh, int io1, int io2)
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{
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UINT8 data = 0;
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if (!roml)
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{
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offs_t addr = offset & 0x1fff;
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if (!BIT(m_bank, 0)) data |= m_roml[addr];
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if (!BIT(m_bank, 1)) data |= m_rom[0x2000 + addr];
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if (!BIT(m_bank, 2)) data |= m_rom[0x4000 + addr];
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if (!BIT(m_bank, 3)) data |= m_rom[0x6000 + addr];
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if (!BIT(m_bank, 4)) data |= m_rom[0x8000 + addr];
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if (!BIT(m_bank, 5)) data |= m_rom[0xa000 + addr];
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if (!BIT(m_bank, 6)) data |= m_rom[0xc000 + addr];
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if (!BIT(m_bank, 7)) data |= m_rom[0xe000 + addr];
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}
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return data;
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}
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//-------------------------------------------------
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// c64_cd_w - cartridge data write
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//-------------------------------------------------
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void c64_dela_ep7x8_cartridge_device::c64_cd_w(address_space &space, offs_t offset, UINT8 data, int ba, int roml, int romh, int io1, int io2)
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{
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if (!io1)
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{
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m_bank = data;
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m_exrom = (data == 0xff);
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}
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}
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