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Add JMP Absolute, JMP Indirect, JSR Absolute, JSL_AbsoluteLong

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scawful
2023-08-19 17:40:36 -04:00
parent d83d341b1e
commit f5c5c34b47
4 changed files with 119 additions and 6 deletions
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19
src/app/emu/mem.h
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@@ -38,6 +38,9 @@ class Memory {
virtual uint8_t PopByte() = 0;
virtual void PushWord(uint16_t value) = 0;
virtual uint16_t PopWord() = 0;
virtual void PushLong(uint32_t value) = 0;
virtual uint32_t PopLong() = 0;
virtual int16_t SP() const = 0;
virtual void SetSP(int16_t value) = 0;
@@ -74,7 +77,7 @@ class MemoryImpl : public Memory {
}
void WriteByte(uint32_t address, uint8_t value) override {
// uint32_t mapped_address = GetMappedAddress(address);
// uint32_t mapped_address = GetMappedAddress(address);
memory_[address] = value;
}
void WriteWord(uint32_t address, uint16_t value) override {
@@ -114,6 +117,20 @@ class MemoryImpl : public Memory {
return (static_cast<uint16_t>(high) << 8) | low;
}
void PushLong(uint32_t value) override {
PushByte(value >> 16);
PushByte(value >> 8);
PushByte(value & 0xFF);
}
uint32_t PopLong() override {
uint8_t low = PopByte();
uint8_t mid = PopByte();
uint8_t high = PopByte();
return (static_cast<uint32_t>(high) << 16) |
(static_cast<uint32_t>(mid) << 8) | low;
}
int16_t SP() const override { return SP_; }
void SetSP(int16_t value) override { SP_ = value; }