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https://github.com/holub/mame
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A standard memory handler has as a prototype (where uX = u8, u16, u32 or u64): uX device::read(address_space &space, offs_t offset, uX mem_mask); void device::write(address_space &space, offs_t offset, uX data, uX mem_mask); We now allow simplified versions which are: uX device::read(offs_t offset, uX mem_mask); void device::write(offs_t offset, uX data, uX mem_mask); uX device::read(offs_t offset); void device::write(offs_t offset, uX data); uX device::read(); void device::write(uX data); Use them at will. Also consider (DECLARE_)(READ|WRITE)(8|16|32|64)_MEMBER on the way out, use the explicit prototypes. Same for lambdas in the memory map, the parameters are now optional following the same combinations.
69 lines
2.2 KiB
C++
69 lines
2.2 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Olivier Galibert
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// handler_entry_read_unmapped/handler_entry_write_unmapped
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// Logs an unmapped access
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template<int Width, int AddrShift, int Endian> class handler_entry_read_unmapped : public handler_entry_read<Width, AddrShift, Endian>
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{
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public:
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using uX = typename emu::detail::handler_entry_size<Width>::uX;
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using inh = handler_entry_read<Width, AddrShift, Endian>;
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handler_entry_read_unmapped(address_space *space) : handler_entry_read<Width, AddrShift, Endian>(space, 0) {}
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~handler_entry_read_unmapped() = default;
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uX read(offs_t offset, uX mem_mask) override;
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std::string name() const override;
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};
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template<int Width, int AddrShift, int Endian> class handler_entry_write_unmapped : public handler_entry_write<Width, AddrShift, Endian>
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{
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public:
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using uX = typename emu::detail::handler_entry_size<Width>::uX;
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using inh = handler_entry_write<Width, AddrShift, Endian>;
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handler_entry_write_unmapped(address_space *space) : handler_entry_write<Width, AddrShift, Endian>(space, 0) {}
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~handler_entry_write_unmapped() = default;
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void write(offs_t offset, uX data, uX mem_mask) override;
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std::string name() const override;
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};
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// handler_entry_read_nop/handler_entry_write_nop
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// Drops an unmapped access silently
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template<int Width, int AddrShift, int Endian> class handler_entry_read_nop : public handler_entry_read<Width, AddrShift, Endian>
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{
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public:
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using uX = typename emu::detail::handler_entry_size<Width>::uX;
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using inh = handler_entry_read<Width, AddrShift, Endian>;
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handler_entry_read_nop(address_space *space) : handler_entry_read<Width, AddrShift, Endian>(space, 0) {}
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~handler_entry_read_nop() = default;
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uX read(offs_t offset, uX mem_mask) override;
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std::string name() const override;
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};
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template<int Width, int AddrShift, int Endian> class handler_entry_write_nop : public handler_entry_write<Width, AddrShift, Endian>
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{
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public:
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using uX = typename emu::detail::handler_entry_size<Width>::uX;
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using inh = handler_entry_write<Width, AddrShift, Endian>;
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handler_entry_write_nop(address_space *space) : handler_entry_write<Width, AddrShift, Endian>(space, 0) {}
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~handler_entry_write_nop() = default;
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void write(offs_t offset, uX data, uX mem_mask) override;
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std::string name() const override;
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};
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