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Add WriteLong to Memory, CPU

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scawful
2023-12-10 02:14:30 -05:00
parent 231ef4678a
commit 519f0320ac
6 changed files with 78 additions and 14 deletions
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13
src/app/emu/memory/memory.h
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@@ -117,6 +117,7 @@ class Memory {
virtual void WriteByte(uint32_t address, uint8_t value) = 0;
virtual void WriteWord(uint32_t address, uint16_t value) = 0;
virtual void WriteLong(uint32_t address, uint32_t value) = 0;
virtual void PushByte(uint8_t value) = 0;
virtual uint8_t PopByte() = 0;
@@ -263,6 +264,12 @@ class MemoryImpl : public Memory, public Loggable {
memory_.at(mapped_address) = value & 0xFF;
memory_.at(mapped_address + 1) = (value >> 8) & 0xFF;
}
void WriteLong(uint32_t address, uint32_t value) override {
uint32_t mapped_address = GetMappedAddress(address);
memory_.at(mapped_address) = value & 0xFF;
memory_.at(mapped_address + 1) = (value >> 8) & 0xFF;
memory_.at(mapped_address + 2) = (value >> 16) & 0xFF;
}
// Stack operations
void PushByte(uint8_t value) override {
@@ -347,11 +354,11 @@ class MemoryImpl : public Memory, public Loggable {
}
if (bank <= 0x3F) {
if (offset <= 0x1FFF) {
if (address <= 0x1FFF) {
return (0x7E << 16) + offset; // Shadow RAM
} else if (offset <= 0x5FFF) {
} else if (address <= 0x5FFF) {
return (bank << 16) + (offset - 0x2000) + 0x2000; // Hardware Registers
} else if (offset <= 0x7FFF) {
} else if (address <= 0x7FFF) {
return offset - 0x6000 + 0x6000; // Expansion RAM
} else {
// Return lorom mapping