diff options
Diffstat (limited to 'src/devices/bus/a2bus/a2vulcan.cpp')
-rw-r--r-- | src/devices/bus/a2bus/a2vulcan.cpp | 89 |
1 files changed, 80 insertions, 9 deletions
diff --git a/src/devices/bus/a2bus/a2vulcan.cpp b/src/devices/bus/a2bus/a2vulcan.cpp index dcc8e454a73..889e7df5de3 100644 --- a/src/devices/bus/a2bus/a2vulcan.cpp +++ b/src/devices/bus/a2bus/a2vulcan.cpp @@ -55,15 +55,12 @@ #include "emu.h" #include "a2vulcan.h" + +#include "bus/ata/ataintf.h" #include "imagedev/harddriv.h" -//************************************************************************** -// GLOBAL VARIABLES -//************************************************************************** -DEFINE_DEVICE_TYPE(A2BUS_VULCAN, a2bus_vulcan_device, "a2vulcan", "Applied Engineering Vulcan IDE controller (IIgs version)") -DEFINE_DEVICE_TYPE(A2BUS_VULCANIIE, a2bus_vulcaniie_device, "a2vuliie", "Applied Engineering Vulcan IDE controller (//e version)") -DEFINE_DEVICE_TYPE(A2BUS_VULCANGOLD, a2bus_vulcangold_device, "a2vulgld", "Applied Engineering Vulcan Gold IDE controller (IIgs version)") +namespace { #define VULCAN_ROM_REGION "vulcan_rom" #define VULCAN_ATA_TAG "vulcan_ata" @@ -83,6 +80,69 @@ ROM_START( vulcangold ) ROM_LOAD( "ae vulcan gold rom v2.0.bin", 0x000000, 0x004000, CRC(19bc3958) SHA1(96a22c2540fa603648a4e638e176eee76523b4e1) ) ROM_END +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +class a2bus_vulcanbase_device: + public device_t, + public device_a2bus_card_interface +{ +protected: + // construction/destruction + a2bus_vulcanbase_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + + virtual void device_start() override; + virtual void device_reset() override; + virtual void device_add_mconfig(machine_config &config) override; + + // overrides of standard a2bus slot functions + virtual uint8_t read_c0nx(uint8_t offset) override; + virtual void write_c0nx(uint8_t offset, uint8_t data) override; + virtual uint8_t read_cnxx(uint8_t offset) override; + virtual uint8_t read_c800(uint16_t offset) override; + virtual void write_c800(uint16_t offset, uint8_t data) override; + + required_device<ata_interface_device> m_ata; + required_region_ptr<uint8_t> m_rom; + + uint8_t m_ram[8*1024]; + +private: + uint16_t m_lastdata; + int m_rombank, m_rambank; + bool m_last_read_was_0; +}; + +class a2bus_vulcan_device : public a2bus_vulcanbase_device +{ +public: + a2bus_vulcan_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + virtual const tiny_rom_entry *device_rom_region() const override; + virtual void device_start() override; +}; + +class a2bus_vulcaniie_device : public a2bus_vulcanbase_device +{ +public: + a2bus_vulcaniie_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + virtual const tiny_rom_entry *device_rom_region() const override; + virtual void device_start() override; +}; + +class a2bus_vulcangold_device : public a2bus_vulcanbase_device +{ +public: + a2bus_vulcangold_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + +protected: + virtual const tiny_rom_entry *device_rom_region() const override; +}; + /*************************************************************************** FUNCTION PROTOTYPES ***************************************************************************/ @@ -122,7 +182,9 @@ const tiny_rom_entry *a2bus_vulcangold_device::device_rom_region() const a2bus_vulcanbase_device::a2bus_vulcanbase_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, type, tag, owner, clock), device_a2bus_card_interface(mconfig, *this), - m_ata(*this, VULCAN_ATA_TAG), m_rom(nullptr), m_lastdata(0), m_rombank(0), m_rambank(0), m_last_read_was_0(false) + m_ata(*this, VULCAN_ATA_TAG), + m_rom(*this, VULCAN_ROM_REGION), + m_lastdata(0), m_rombank(0), m_rambank(0), m_last_read_was_0(false) { } @@ -147,8 +209,6 @@ a2bus_vulcangold_device::a2bus_vulcangold_device(const machine_config &mconfig, void a2bus_vulcanbase_device::device_start() { - m_rom = device().machine().root_device().memregion(this->subtag(VULCAN_ROM_REGION).c_str())->base(); - save_item(NAME(m_lastdata)); save_item(NAME(m_ram)); save_item(NAME(m_rombank)); @@ -317,3 +377,14 @@ void a2bus_vulcanbase_device::write_c800(uint16_t offset, uint8_t data) m_ram[offset + m_rambank] = data; } } + +} // anonymous namespace + + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +DEFINE_DEVICE_TYPE_PRIVATE(A2BUS_VULCAN, device_a2bus_card_interface, a2bus_vulcan_device, "a2vulcan", "Applied Engineering Vulcan IDE controller (IIgs version)") +DEFINE_DEVICE_TYPE_PRIVATE(A2BUS_VULCANIIE, device_a2bus_card_interface, a2bus_vulcaniie_device, "a2vuliie", "Applied Engineering Vulcan IDE controller (//e version)") +DEFINE_DEVICE_TYPE_PRIVATE(A2BUS_VULCANGOLD, device_a2bus_card_interface, a2bus_vulcangold_device, "a2vulgld", "Applied Engineering Vulcan Gold IDE controller (IIgs version)") |