cool-bun-demo/system/system.h

#ifndef __SYSTEM_H__
#define __SYSTEM_H__

#include "../types.h"
#include "../screen.h"

#define WORD_ALIGNED_BYTE_POSITION(width, x, y) (((width * y + x) >> 3) & 0xfffe)
#define WORD_ALIGNED_BYTE_X(x) (((x) >> 3) & 0xfffe)

// this needs to be kept in sync with the XDEFs in system.s

// copperlist
extern void initializeCopperlist(void *copperlist);
extern uint16_t* endCopperlist(uint16_t *copperlist);
/**
  * This only adds bitplane pointers to the copperlist
  * and sets it up for double buffering.
  * You still need to configure the playfield hardware.
  */
extern uint16_t* addDisplayToCopperlist(
  uint16_t *copperlist,
  struct ScreenDefinition *,
  struct ActiveScreenBufferDetails *,
  void *copperlistBitplanePointers
);
extern void updateDisplayInCopperList(
  struct ScreenDefinition *,
  struct ActiveScreenBufferDetails *,
  void *copperlistBitplanePointers
);
extern uint16_t* addColorsToCopperlist(uint16_t *copperlist, color_t[], int count);
extern uint16_t* setUpEmptySpritesInCopperlist(uint16_t *copperlist);

extern void takeOverSystem(void);
extern void giveBackSystem(void);
extern void setUpDisplay(uint32_t bitplaneCount);

extern void myWaitBlit(void);
extern uint16_t WaitBOF(uint32_t line);

#endif