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More CMOS initialization

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This commit is contained in:
StrikerX3 2018-12-09 14:30:51 -02:00
parent 25490129f2
commit ad0fbc9a29
1 changed files with 7 additions and 2 deletions
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9
src/core/vixen/hw/basic/cmos.cpp
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@ -23,14 +23,19 @@ static inline bool IsRTCRegister(uint8_t reg) {
CMOS::CMOS() {
// TODO: Are IRQs needed?
// TODO: Persist memory
memset(m_memory, 0, sizeof(m_memory));
}
CMOS::~CMOS() {
}
void CMOS::Reset() {
// The Xbox kernel checks that the CMOS user memory has an specific pattern
// Reset registers
m_memory[RegB] &= ~(RegB_PIE | RegB_AIE | RegB_SQWE);
m_memory[RegC] &= ~(RegC_UF | RegC_IRQF | RegC_PF | RegC_AF);
// The Xbox kernel checks that the CMOS user memory has an specific pattern
for (int i = 0x10; i < 0x70; i++) {
m_memory[i] = 0x55 << (i & 1);
}
@ -96,7 +101,7 @@ bool CMOS::IOWrite(uint32_t port, uint32_t value, uint8_t size) {
case RegB:
case RegC:
case RegD:
log_debug("handle this\n");
// TODO: Handle these
break;
}
m_memory[m_regAddr] = value;