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Remove some "tricksy" code from the Z80 emulator chain.

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Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
This commit is contained in:
Adrian Conlon
2018-04-14 09:39:06 +01:00
parent 4b4f6b1a49
commit 9de0f597f6
14 changed files with 140 additions and 141 deletions
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src/Bus.cpp
+10 -10
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@@ -11,7 +11,7 @@ uint8_t& EightBit::Bus::DATA() {
return *m_data;
}
uint8_t& EightBit::Bus::placeDATA(uint8_t value) {
uint8_t& EightBit::Bus::placeDATA(const uint8_t value) {
m_temporary = value;
m_data = &m_temporary;
return DATA();
@@ -22,17 +22,17 @@ uint8_t& EightBit::Bus::referenceDATA(uint8_t& value) {
return DATA();
}
uint8_t EightBit::Bus::peek(uint16_t address) {
uint8_t EightBit::Bus::peek(const uint16_t address) {
bool rom;
return reference(address, rom);
}
void EightBit::Bus::poke(uint16_t address, uint8_t value) {
void EightBit::Bus::poke(const uint16_t address, const uint8_t value) {
bool rom;
reference(address, rom) = value;
}
uint16_t EightBit::Bus::peekWord(uint16_t address) {
uint16_t EightBit::Bus::peekWord(const uint16_t address) {
register16_t returned;
returned.low = peek(address);
returned.high = peek(address + 1);
@@ -46,28 +46,28 @@ uint8_t EightBit::Bus::read() {
return returned;
}
uint8_t EightBit::Bus::read(uint16_t offset) {
uint8_t EightBit::Bus::read(const uint16_t offset) {
ADDRESS().word = offset;
return read();
}
uint8_t EightBit::Bus::read(register16_t address) {
uint8_t EightBit::Bus::read(const register16_t address) {
ADDRESS() = address;
return read();
}
void EightBit::Bus::write(uint8_t value) {
void EightBit::Bus::write(const uint8_t value) {
WritingByte.fire(ADDRESS().word);
reference() = value;
WrittenByte.fire(ADDRESS().word);
}
void EightBit::Bus::write(uint16_t offset, uint8_t value) {
void EightBit::Bus::write(const uint16_t offset, const uint8_t value) {
ADDRESS().word = offset;
write(value);
}
void EightBit::Bus::write(register16_t address, uint8_t value) {
void EightBit::Bus::write(const register16_t address, const uint8_t value) {
ADDRESS() = address;
write(value);
}
@@ -75,5 +75,5 @@ void EightBit::Bus::write(register16_t address, uint8_t value) {
uint8_t& EightBit::Bus::reference() {
bool rom;
auto& value = reference(ADDRESS().word, rom);
return LIKELY(!rom) ? referenceDATA(value) : placeDATA(value);
return rom ? placeDATA(value) : referenceDATA(value);
}