diff options
Diffstat (limited to 'lib/nes/cartridge.hh')
| -rw-r--r-- | lib/nes/cartridge.hh | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/lib/nes/cartridge.hh b/lib/nes/cartridge.hh deleted file mode 100644 index fb75946..0000000 --- a/lib/nes/cartridge.hh +++ /dev/null @@ -1,78 +0,0 @@ -#pragma once - -#include "nes/util/status.hh" -#include "nes/mapper.hh" -#include <cstddef> -#include <vector> -#include <string_view> - -namespace nes -{ - enum class name_table_arrangement - { - horizontal, - vertical, - }; - - class cartridge - { - static constexpr auto prg_rom_bank_size = std::size_t{ 16 * 1024 }; - static constexpr auto chr_rom_bank_size = std::size_t{ 8 * 1024 }; - static constexpr auto ram_bank_size = std::size_t{ 8 * 1024 }; - static constexpr auto header_length = std::size_t{ 16 }; - - struct header - { - auto get_magic_0() const -> std::uint8_t { return value[0]; } - auto get_magic_1() const -> std::uint8_t { return value[1]; } - auto get_magic_2() const -> std::uint8_t { return value[2]; } - auto get_magic_3() const -> std::uint8_t { return value[3]; } - auto get_prg_rom_banks() const -> unsigned { return value[4]; } - auto get_chr_rom_banks() const -> unsigned { return value[5]; } - auto get_control_1() const -> std::uint8_t { return value[6]; } - auto get_control_2() const -> std::uint8_t { return value[7]; } - auto get_ram_banks() const -> unsigned { return value[8]; } - auto get_has_trainer() const -> bool { return get_control_1() & 0b00000100; } - auto get_mapper_low() const -> unsigned { return (get_control_1() & 0b11110000) >> 4; } - auto get_mapper_high() const -> unsigned { return (get_control_2() & 0b11110000) >> 0; } - auto get_name_table_arrangement() const -> name_table_arrangement { return static_cast<name_table_arrangement>((get_control_1() & 0b00000001) >> 0); } - - std::uint8_t value[header_length]{}; - - explicit header(std::uint8_t const* v) - { - for (auto i = std::size_t{ 0 }; i < header_length; ++i) - { - value[i] = v[i]; - } - } - }; - - status status_{ status::error_uninitialized }; - std::vector<std::uint8_t> prg_rom_; - std::vector<std::uint8_t> chr_rom_; - std::vector<std::uint8_t> ram_; - name_table_arrangement name_table_arrangement_{}; - mapper* mapper_{ &mapper::invalid() }; - - public: - explicit cartridge() = default; - - static auto from_data(void const* data, std::size_t length) -> cartridge; - static auto from_file(std::string_view path) -> cartridge; - - auto get_status() const -> status { return status_; } - auto get_prg_rom() const -> std::uint8_t const* { return prg_rom_.data(); } - auto get_prg_rom_length() const -> std::size_t { return prg_rom_.size(); } - auto get_chr_rom() const -> std::uint8_t const* { return chr_rom_.data(); } - auto get_chr_rom_length() const -> std::size_t { return chr_rom_.size(); } - auto get_ram() const -> std::uint8_t const* { return ram_.data(); } - auto get_ram_mut() -> std::uint8_t* { return ram_.data(); } - auto get_ram_length() const -> std::size_t { return ram_.size(); } - auto get_mapper() const -> mapper& { return *mapper_; } - auto get_name_table_arrangement() const -> name_table_arrangement { return name_table_arrangement_; } - - private: - explicit cartridge(status); - }; -} // namespace nes
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