diff options
Diffstat (limited to 'ym2612.h')
| -rw-r--r-- | ym2612.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/ym2612.h b/ym2612.h new file mode 100644 index 0000000..6b99dd0 --- /dev/null +++ b/ym2612.h @@ -0,0 +1,29 @@ +#ifndef YM2612_H_ +#define YM2612_H_ + +#include <stdint.h> + +#define NUM_SHARED_REGS (0x30-0x21) +#define NUM_PART_REGS (0xB7-0x30) + +typedef struct { + uint32_t current_cycle; + uint32_t write_cycle; + uint8_t *selected_reg; + uint16_t timer_a; + uint8_t timer_b; + uint8_t reg_num; + uint8_t status; + uint8_t part1_regs[NUM_SHARED_REGS+NUM_PART_REGS]; + uint8_t part2_regs[NUM_PART_REGS]; +} ym2612_context; + +void ym_init(ym2612_context * context); +void ym_run(ym2612_context * context, uint32_t to_cycle); +void ym_address_write_part1(ym2612_context * context, uint8_t address); +void ym_address_write_part2(ym2612_context * context, uint8_t address); +void ym_data_write(ym2612_context * context, uint8_t value); +uint8_t ym_read_status(ym2612_context * context); + +#endif //YM2612_H_ + |