scc.h

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// -*- coding: utf-8-unix -*-
/*
 * Copyright (c) 2021-2024 Daishi Mori (mori0091)
 *
 * This software is released under the MIT License.\n
 * See https://github.com/mori0091/libmsx/blob/main/LICENSE
 *
 * GitHub libmsx project\n
 * https://github.com/mori0091/libmsx
 */
#pragma once
 
#ifndef SCC_H_
#define SCC_H_
 
#include <stdint.h>
 
struct SCC_Waveform {
  int8_t data[32];
};
 
struct SCC_Channel {
  volatile const struct SCC_Waveform * ro_waveform;
  volatile struct SCC_Waveform * wo_waveform;
  volatile uint16_t * rw_fdr;
  volatile uint8_t * rw_volume;
};
 
struct SCC_Device {
  volatile uint8_t * rw_channel_mask;
  volatile uint8_t * wo_deformation;
  struct SCC_Channel channels[5];
};
 
struct SCC {
  uint8_t slot;                 
  uint8_t version;              
  uint8_t mode;                 
  const struct SCC_Device * device; 
};
 
uint8_t SCC_inspect(uint8_t slot);
 
uint8_t SCC_find(struct SCC * scc);
 
void SCC_set_mode(struct SCC * scc, uint8_t mode);
 
uint8_t SCC_get_mode(struct SCC * scc);
 
void SCC_enable(const struct SCC * scc);
 
void SCC_disable(const struct SCC * scc);
 
#endif // SCC_H_