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45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
//
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// 65816Base.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 28/09/2020.
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// Copyright © 2020 Thomas Harte. All rights reserved.
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//
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#include "../65816.hpp"
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using namespace CPU::WDC65816;
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uint16_t ProcessorBase::get_value_of_register(Register r) const {
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switch (r) {
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case Register::ProgramCounter: return pc_;
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case Register::LastOperationAddress: return last_operation_pc_;
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case Register::StackPointer: return s_.full;
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case Register::Flags: return get_flags();
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case Register::A: return a_.full;
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case Register::X: return x_.full;
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case Register::Y: return y_.full;
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case Register::EmulationFlag: return emulation_flag_;
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case Register::DataBank: return data_bank_ >> 16;
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case Register::ProgramBank: return program_bank_ >> 16;
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case Register::Direct: return direct_;
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default: return 0;
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}
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}
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void ProcessorBase::set_value_of_register(Register r, uint16_t value) {
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switch (r) {
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case Register::ProgramCounter: pc_ = value; break;
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case Register::StackPointer: s_.full = value; break;
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case Register::Flags: set_flags(uint8_t(value)); break;
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case Register::A: a_.full = value; break;
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case Register::X: x_.full = value; break;
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case Register::Y: y_.full = value; break;
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case Register::EmulationFlag: set_emulation_mode(value); break;
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case Register::DataBank: data_bank_ = uint32_t(value) << 16; break;
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case Register::ProgramBank: program_bank_ = uint32_t(value) << 16; break;
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case Register::Direct: direct_ = value; break;
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default: break;
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}
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}
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