dreamcast/aica/aica_rtc.hpp
Zack Buhman 73a685face aica: use SCIPD to detect TIMA overflow
Real hardware does not support TIMA reads--SCIPD is the correct way to
achieve this.
2024-03-01 15:26:47 +08:00

57 lines
1.2 KiB
C++

#include <stdint.h>
#include <stddef.h>
#include "type.hpp"
struct aica_rtc {
union {
reg32 reg_0000;
reg32 rtc0;
};
union {
reg32 reg_0004;
reg32 rtc1;
};
union {
reg32 reg_0008;
reg32 en;
};
uint32_t RTC() const
{
return (static_cast<uint32_t>((reg_0000 >> 0) & 0xffff) << 16) | (static_cast<uint32_t>((reg_0004 >> 0) & 0xffff) << 0);
}
void RTC(const uint32_t v)
{
reg_0000 = (((v >> 16) & 0xffff) << 0);
reg_0004 = (((v >> 0) & 0xffff) << 0);
}
uint32_t EN() const
{
return (static_cast<uint32_t>((reg_0008 >> 0) & 0x1) << 0);
}
void EN(const uint32_t v)
{
reg_0008 = (((v >> 0) & 0x1) << 0);
}
};
static_assert((sizeof (aica_rtc)) == 0xc - 0x0);
static_assert((offsetof (aica_rtc, reg_0000)) == 0x0 - 0x0);
static_assert((offsetof (aica_rtc, reg_0004)) == 0x4 - 0x0);
static_assert((offsetof (aica_rtc, reg_0008)) == 0x8 - 0x0);
namespace aica {
namespace rtc0 {
constexpr uint32_t RTC(const uint32_t v) { return (((v >> 16) & 0xffff) << 0); }
}
namespace rtc1 {
constexpr uint32_t RTC(const uint32_t v) { return (((v >> 0) & 0xffff) << 0); }
}
namespace en {
constexpr uint32_t EN(const uint32_t v) { return (((v >> 0) & 0x1) << 0); }
}
}