6502/EightBit
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Start adding comparison operations to EightBit classes

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This commit is contained in:
Adrian Conlon committed 2021-12-27 14:24:38 +00:00
1 parent af7679505c
commit 945fcefb36
16 files changed
+154 -34
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Intel8080/inc/Intel8080.h
+8 -4
View File
@@ -35,10 +35,14 @@ namespace EightBit {
virtual int execute() final;
virtual int step() final;
[[nodiscard]] virtual register16_t& AF() noexcept final;
[[nodiscard]] virtual register16_t& BC() noexcept final;
[[nodiscard]] virtual register16_t& DE() noexcept final;
[[nodiscard]] virtual register16_t& HL() noexcept final;
[[nodiscard]] const register16_t& AF() const noexcept final;
[[nodiscard]] auto& AF() noexcept { return IntelProcessor::AF(); }
[[nodiscard]] const register16_t& BC() const noexcept final;
[[nodiscard]] auto& BC() noexcept { return IntelProcessor::BC(); }
[[nodiscard]] const register16_t& DE() const noexcept final;
[[nodiscard]] auto& DE() noexcept { return IntelProcessor::DE(); }
[[nodiscard]] const register16_t& HL() const noexcept final;
[[nodiscard]] auto& HL() noexcept { return IntelProcessor::HL(); }
[[nodiscard]] bool requestingIO() noexcept { return m_requestIO; }
[[nodiscard]] bool requestingMemory() noexcept { return m_requestMemory; }
Intel8080/src/Intel8080.cpp
+6 -5
View File
@@ -19,20 +19,21 @@ EightBit::Intel8080::Intel8080(Bus& bus)
DEFINE_PIN_LEVEL_CHANGERS(DBIN, Intel8080);
DEFINE_PIN_LEVEL_CHANGERS(WR, Intel8080);
EightBit::register16_t& EightBit::Intel8080::AF() noexcept {
af.low = (af.low | Bit1) & ~(Bit5 | Bit3);
const EightBit::register16_t& EightBit::Intel8080::AF() const noexcept {
auto* processor = const_cast<Intel8080*>(this);
processor->af.low = (af.low | Bit1) & ~(Bit5 | Bit3);
return af;
}
EightBit::register16_t& EightBit::Intel8080::BC() noexcept {
const EightBit::register16_t& EightBit::Intel8080::BC() const noexcept {
return bc;
}
EightBit::register16_t& EightBit::Intel8080::DE() noexcept {
const EightBit::register16_t& EightBit::Intel8080::DE() const noexcept {
return de;
}
EightBit::register16_t& EightBit::Intel8080::HL() noexcept {
const EightBit::register16_t& EightBit::Intel8080::HL() const noexcept {
return hl;
}