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Start refactoring the processor classes to allow big/little endian processors to be specified.

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Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
This commit is contained in:
Adrian Conlon
2018-08-17 21:53:49 +01:00
parent 677b9a608e
commit cc64e114a9
9 changed files with 151 additions and 50 deletions
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14
src/IntelProcessor.cpp
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@@ -2,7 +2,7 @@
#include "IntelProcessor.h"
EightBit::IntelProcessor::IntelProcessor(Bus& bus)
: Processor(bus) {
: LittleEndianProcessor(bus) {
for (int i = 0; i < 0x100; ++i)
m_decodedOpcodes[i] = i;
}
@@ -21,14 +21,12 @@ uint8_t EightBit::IntelProcessor::pop() {
}
EightBit::register16_t EightBit::IntelProcessor::getWord() {
const auto low = BUS().read();
MEMPTR() = ++BUS().ADDRESS();
const auto high = BUS().read();
return register16_t(low, high);
const auto returned = LittleEndianProcessor::getWord();
MEMPTR() = BUS().ADDRESS();
return returned;
}
void EightBit::IntelProcessor::setWord(const register16_t value) {
BUS().write(value.low);
MEMPTR() = ++BUS().ADDRESS();
BUS().write(value.high);
LittleEndianProcessor::setWord(value);
MEMPTR() = BUS().ADDRESS();
}