dreamcast/maple/maple_host_bits.h

49 lines
1.2 KiB
C++

#include <cstdint>
#include "../float_uint32.h"
namespace host_instruction {
constexpr uint32_t end_flag = 1 << 31;
namespace port_select {
constexpr uint32_t a = 0 << 16;
constexpr uint32_t b = 1 << 16;
constexpr uint32_t c = 2 << 16;
constexpr uint32_t d = 3 << 16;
}
namespace pattern {
constexpr uint32_t normal = 0b000 << 8;
constexpr uint32_t light_gun_mode = 0b010 << 8;
constexpr uint32_t reset = 0b011 << 8;
constexpr uint32_t return_from_light_gun_mode = 0b100 << 8;
constexpr uint32_t nop = 0b111 << 8;
}
constexpr uint32_t transfer_length(uint32_t num) { return (num & 0xff) << 0; }
}
namespace ap {
namespace port_select {
constexpr uint32_t a = 0b00 << 6;
constexpr uint32_t b = 0b01 << 6;
constexpr uint32_t c = 0b10 << 6;
constexpr uint32_t d = 0b11 << 6;
}
namespace de {
constexpr uint32_t device = 1 << 5;
constexpr uint32_t expansion_device = 0 << 5;
constexpr uint32_t port = 0 << 5;
}
namespace lm_bus {
constexpr uint32_t _4 = 0b10000 << 0;
constexpr uint32_t _3 = 0b01000 << 0;
constexpr uint32_t _2 = 0b00100 << 0;
constexpr uint32_t _1 = 0b00010 << 0;
constexpr uint32_t _0 = 0b00001 << 0;
}
}