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funtech/supracan.cpp: move lockout chip to umc6650_device
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // license:BSD-3-Clause | ||
| // copyright-holders:Angelo Salese | ||
| /************************************************************************************************* | ||
| [Super A'Can] UMC 6650 lockout chip | ||
| TODO: | ||
| - signal to cart B26 & B27 (from register $09?). | ||
| - Does the effective lockout resolution input merges with $1c signal from UMC6619 host space? | ||
| - /WR for optional cart save RAM | ||
| **************************************************************************************************/ | ||
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| #include "emu.h" | ||
| #include "umc6650.h" | ||
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| #define VERBOSE (1) | ||
| #include "logmacro.h" | ||
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| DEFINE_DEVICE_TYPE(UMC6650, umc6650_device, "umc6650", "UMC 6650 lockout chip") | ||
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| umc6650_device::umc6650_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) | ||
| : device_t(mconfig, UMC6650, tag, owner, clock) | ||
| , device_memory_interface(mconfig, *this) | ||
| , m_romkey(*this, "romkey") | ||
| , m_space_io_config("io", ENDIANNESS_LITTLE, 8, 7, 0, address_map_constructor(FUNC(umc6650_device::internal_map), this)) | ||
| { | ||
| } | ||
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| ROM_START( umc6650 ) | ||
| ROM_REGION(0x10, "romkey", ROMREGION_ERASEFF) | ||
| // 68k internal ROM (security related) | ||
| ROM_LOAD( "umc6650.bin", 0x00, 0x10, CRC(0ba78597) SHA1(f94805457976d60b91e8df18f9f49cccec77be78) ) | ||
| ROM_END | ||
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| const tiny_rom_entry *umc6650_device::device_rom_region() const | ||
| { | ||
| return ROM_NAME( umc6650 ); | ||
| } | ||
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| device_memory_interface::space_config_vector umc6650_device::memory_space_config() const | ||
| { | ||
| return space_config_vector{ | ||
| std::make_pair(AS_IO, &m_space_io_config) | ||
| }; | ||
| } | ||
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| void umc6650_device::device_start() | ||
| { | ||
| m_space_io = &space(AS_IO); | ||
| save_item(NAME(m_address)); | ||
| } | ||
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| void umc6650_device::device_reset() | ||
| { | ||
| m_address = 0x7f; | ||
| } | ||
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| u8 umc6650_device::read(offs_t offset) | ||
| { | ||
| return offset == 1 ? m_address : m_space_io->read_byte(m_address); | ||
| } | ||
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| void umc6650_device::write(offs_t offset, u8 data) | ||
| { | ||
| if (offset == 1) | ||
| m_address = data & 0x7f; | ||
| else | ||
| m_space_io->write_byte(m_address, data); | ||
| } | ||
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| void umc6650_device::internal_map(address_map &map) | ||
| { | ||
| // map(0x09, 0x09) | ||
| // map(0x0c, 0x0c) | ||
| map(0x20, 0x2f).rom().region(m_romkey, 0); | ||
| map(0x40, 0x5f).ram(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| // license:BSD-3-Clause | ||
| // copyright-holders:Angelo Salese | ||
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| #ifndef MAME_FUNTECH_UMC6650_H | ||
| #define MAME_FUNTECH_UMC6650_H | ||
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| #pragma once | ||
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| class umc6650_device : public device_t, public device_memory_interface | ||
| { | ||
| public: | ||
| umc6650_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); | ||
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| u8 read(offs_t offset); | ||
| void write(offs_t offset, u8 data); | ||
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| private: | ||
| virtual void device_start() override; | ||
| virtual void device_reset() override; | ||
| virtual space_config_vector memory_space_config() const override; | ||
| virtual const tiny_rom_entry *device_rom_region() const override; | ||
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| required_memory_region m_romkey; | ||
| address_space_config m_space_io_config; | ||
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| void internal_map(address_map &map); | ||
| address_space *m_space_io; | ||
| u8 m_address; | ||
| }; | ||
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| DECLARE_DEVICE_TYPE(UMC6650, umc6650_device) | ||
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| #endif // MAME_FUNTECH_UMC6650_H |