#include  <machine.h>
#define _SPR2_ / * Use sprite display extension library * /
#include "sega_spr.h"
#include "sega_scl.h"
#include "sega_int.h"

#define COMMAND_MAX 512 / * Maximum number of commands * /
#define GOUR_TBL_MAX 512 / * Maximum number of gour tables * /
#define LOOKUP_TBL_MAX 512 / * Maximum number of lookup tables * /
#define CHAR_MAX 100 / * Maximum number of characters * /
#define DRAW_PRTY_MAX 256 / * Maximum number of drawing priority blocks * /
SPR_2DefineWork(work2d, COMMAND_MAX, GOUR_TBL_MAX,
                      LOOKUP_TBL_MAX, CHAR_MAX, DRAW_PRTY_MAX)
                                          / * 2D work area definition * /
extern void vbStart (void); / * V-BLANK IN interrupt routine * /
extern void vbEnd (void); / * V-BLANK OUT interrupt routine * / 

main()
{
      set_imask (0); / * Enable interrupt * / 

     SCL_Vdp2Init (); / * Scroll and initialize priority * / 

     SCL_SetPriority(SCL_SP0|SCL_SP1|SCL_SP2|SCL_SP3|SCL_SP4|
                              SCL_SP5|SCL_SP6|SCL_SP7,7);
     SCL_SetSpriteMode(SCL_TYPE1,SCL_MIX,SCL_SP_WINDOW);
     SPR_2Initial (& work2d); / * 2D sprite display initialization * / 

     INT_ChgMsk(INT_MSK_NULL, INT_MSK_VBL_IN | INT_MSK_VBL_OUT);
                                          / * Disable V-BLANK interrupt * /
     INT_SetFunc(INT_SCU_VBLK_IN, &vbStart);
                                          / * Register V-BLANK IN interrupt routine * /
     INT_SetFunc(INT_SCU_VBLK_OUT, &vbEnd);     
                                          / * Register V-BLANK OUT interrupt routine * /
     INT_ChgMsk( INT_MSK_VBL_IN | INT_MSK_VBL_OUT, INT_MSK_NULL);
                                          / * Enable V-BLANK interrupt * / 

     for(;;){
         SPR_2SetChar (...); / * Character data set to VRAM * /
     }

     SPR_2FrameChgIntr (0xffff); / * Frame change interval * /
                                          / * Set to undefined mode * / 

     for(;;){

                   ------------- / * Scroll data set * / 

          SPR_2OpenCommand(SPR_2DRAW_PRTY_OFF);
                                          / * Command write open * /
          SPR_2SysClip (0, & xy); / * System clip area command * /
          SPR_2LocalCoord (0, & xy); / * Local coordinate command * /