diff options
Diffstat (limited to 'src/devices/bus/apf/rom.c')
-rw-r--r-- | src/devices/bus/apf/rom.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/src/devices/bus/apf/rom.c b/src/devices/bus/apf/rom.c new file mode 100644 index 00000000000..9eb83e4f12c --- /dev/null +++ b/src/devices/bus/apf/rom.c @@ -0,0 +1,78 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +/*********************************************************************************************************** + + + APF Imagination / M-1000 cart emulation + + + ***********************************************************************************************************/ + + +#include "emu.h" +#include "rom.h" + + +//------------------------------------------------- +// apf_rom_device - constructor +//------------------------------------------------- + +const device_type APF_ROM_STD = &device_creator<apf_rom_device>; +const device_type APF_ROM_BASIC = &device_creator<apf_basic_device>; +const device_type APF_ROM_SPACEDST = &device_creator<apf_spacedst_device>; + + +apf_rom_device::apf_rom_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) + : device_t(mconfig, type, name, tag, owner, clock, shortname, source), + device_apf_cart_interface( mconfig, *this ) +{ +} + +apf_rom_device::apf_rom_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, APF_ROM_STD, "APF Standard Carts", tag, owner, clock, "apf_rom", __FILE__), + device_apf_cart_interface( mconfig, *this ) +{ +} + +apf_basic_device::apf_basic_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : apf_rom_device(mconfig, APF_ROM_BASIC, "APF BASIC Carts", tag, owner, clock, "apf_basic", __FILE__) +{ +} + +apf_spacedst_device::apf_spacedst_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : apf_rom_device(mconfig, APF_ROM_SPACEDST, "APF Space Destroyer Cart", tag, owner, clock, "apf_spacedst", __FILE__) +{ +} + + +/*------------------------------------------------- + mapper specific handlers + -------------------------------------------------*/ + +READ8_MEMBER(apf_rom_device::read_rom) +{ + if (offset < m_rom_size) + return m_rom[offset]; + else + return 0xff; +} + + +READ8_MEMBER(apf_basic_device::extra_rom) +{ + if (offset < (m_rom_size - 0x2000)) + return m_rom[offset + 0x2000]; + else + return 0xff; +} + + +READ8_MEMBER(apf_spacedst_device::read_ram) +{ + return m_ram[offset]; +} + +WRITE8_MEMBER(apf_spacedst_device::write_ram) +{ + m_ram[offset] = data; +} |