gunfront.c

十七种模拟器源代码 非常有用的作课程设计不可缺少的

   /*-----[Sound Setup]-----*/

   Z80ROM=RAM+0x38000;
   if(!load_rom("c71-12.rom", Z80ROM, 0x10000)) return;	// Z80 SOUND ROM

   if(!(PCMROM=AllocateMem(0x100000))) return;
   if(!load_rom("c71-01.rom",PCMROM,0x100000)) return;	// ADPCM A rom
   YM2610SetBuffers(PCMROM, PCMROM, 0x100000, 0x100000);

   AddTaitoYM2610(0x01A4, 0x0150, 0x10000);

   /*-----------------------*/

   memset(RAM+0x00000,0x00,0x34000);

   RAM_VIDEO  = RAM+0x10000;
   RAM_SCROLL = RAM+0x32100;
   RAM_OBJECT = RAM+0x20000;
   RAM_INPUT  = RAM+0x32000;
   GFX_FG0    = RAM+0x34000;

   GFX_BG0_SOLID = make_solid_mask_8x8  (GFX_BG0, 0x8000);
   GFX_SPR_SOLID = make_solid_mask_16x16(GFX_SPR, 0x2000);

   set_colour_mapper(&col_map_rrrr_gggg_bbbb_xxxx);
   InitPaletteMap(RAM+0x30000, 0x100, 0x10, 0x1000);


   // speed hack

   WriteWord68k(&ROM[0x151DE],0x4EF9);			//	jmp	$0000C0
   WriteLong68k(&ROM[0x151E0],0x000000C0);

   WriteLong68k(&ROM[0x000C0],0x13FC0000);		//	move.b	#$00,$AA0000
   WriteLong68k(&ROM[0x000C4],0x00AA0000);

   WriteWord68k(&ROM[0x000C8],0x082D);			//	btst	#2,-32762(a5)
   WriteLong68k(&ROM[0x000CA],0x00028006);

   WriteWord68k(&ROM[0x000CE],0x6700+(0x100-0x10)); 	//	beq.s	<loop>

   WriteWord68k(&ROM[0x000D0],0x082D);			//	btst	#5,-1223(a5)
   WriteLong68k(&ROM[0x000D2],0x0005FB39);

   WriteWord68k(&ROM[0x000D6],0x6600+(0x100-0x18)); 	//	bne.s	<loop>

   WriteWord68k(&ROM[0x000D8],0x4EF9);			//	jmp	$0151EE
   WriteLong68k(&ROM[0x000DA],0x000151EE);

   // scroll hack

   WriteLong68k(&ROM[0x10DFC],0x4EB80100);		//	jsr	$100.w

   WriteWord68k(&ROM[0x00100],0x4EB9);			//	jsr	$1101C
   WriteLong68k(&ROM[0x00102],0x0001101C);

   WriteLong68k(&ROM[0x00106],0x13FC0000);		//	move.b	#$00,$AA0000
   WriteLong68k(&ROM[0x0010A],0x00AA0000);

   WriteWord68k(&ROM[0x0010E],0x4E75);			//	rts

   // Init tc0220ioc emulation
   // ------------------------

   tc0220ioc.RAM  = RAM_INPUT;
   tc0220ioc.ctrl = 0;	//TC0220_STOPCPU;
   reset_tc0220ioc();

   // Init tc0100scn emulation
   // ------------------------

   tc0100scn[0].layer[0].RAM	=RAM_VIDEO+0x0000;
   tc0100scn[0].layer[0].GFX	=GFX;
   tc0100scn[0].layer[0].MASK	=GFX_BG0_SOLID;
   tc0100scn[0].layer[0].SCR	=RAM_SCROLL+0;
   tc0100scn[0].layer[0].type	=SCN_BG0;
   tc0100scn[0].layer[0].bmp_x	=32;
   tc0100scn[0].layer[0].bmp_y	=32;
   tc0100scn[0].layer[0].bmp_w	=224;
   tc0100scn[0].layer[0].bmp_h	=320;
// Mapper disabled
   tc0100scn[0].layer[0].tile_mask=0x7FFF;
   tc0100scn[0].layer[0].scr_x	=0x0013;
   tc0100scn[0].layer[0].scr_y	=0x0008;

   tc0100scn[0].layer[1].RAM	=RAM_VIDEO+0x8000;
   tc0100scn[0].layer[1].GFX	=GFX;
   tc0100scn[0].layer[1].MASK	=GFX_BG0_SOLID;
   tc0100scn[0].layer[1].SCR	=RAM_SCROLL+2;
   tc0100scn[0].layer[1].type	=SCN_BG1;
   tc0100scn[0].layer[1].bmp_x	=32;
   tc0100scn[0].layer[1].bmp_y	=32;
   tc0100scn[0].layer[1].bmp_w	=224;
   tc0100scn[0].layer[1].bmp_h	=320;
// Mapper disabled
   tc0100scn[0].layer[1].tile_mask=0x7FFF;
   tc0100scn[0].layer[1].scr_x	=0x0013;
   tc0100scn[0].layer[1].scr_y	=0x0008;

   tc0100scn[0].layer[2].RAM	=RAM_VIDEO+0x4000;
   tc0100scn[0].layer[2].GFX	=GFX_FG0;
   tc0100scn[0].layer[2].SCR	=RAM_SCROLL+4;
   tc0100scn[0].layer[2].type	=SCN_FG0_SCROLL;
   tc0100scn[0].layer[2].bmp_x	=32;
   tc0100scn[0].layer[2].bmp_y	=32;
   tc0100scn[0].layer[2].bmp_w	=224;
   tc0100scn[0].layer[2].bmp_h	=320;
// Mapper disabled
   tc0100scn[0].layer[2].scr_x	=0x0013;
   tc0100scn[0].layer[2].scr_y	=0x0008;

   tc0100scn[0].RAM     = RAM_VIDEO;
   tc0100scn[0].GFX_FG0 = GFX_FG0;

   init_tc0100scn(0);

   // Init tc0200obj emulation
   // ------------------------

   tc0200obj.RAM	= RAM_OBJECT+0x0000;
   tc0200obj.RAM_B	= RAM_OBJECT+0x8000;
   tc0200obj.GFX	= GFX_SPR;
   tc0200obj.MASK	= GFX_SPR_SOLID;
   tc0200obj.bmp_x	= 32;
   tc0200obj.bmp_y	= 32;
   tc0200obj.bmp_w	= 224;
   tc0200obj.bmp_h	= 320;
// Mapper disabled
   tc0200obj.tile_mask	= 0x1FFF;
   tc0200obj.ofs_x	= 0;
   tc0200obj.ofs_y	= 0;

   init_tc0200obj();

/*
 *  StarScream Stuff follows
 */

   ByteSwap(ROM,0xC0000);
   ByteSwap(RAM,0x2C000);

   AddMemFetch(0x000000, 0x0BFFFF, ROM+0x000000-0x000000);	// 68000 ROM
   AddMemFetch(-1, -1, NULL);

   AddReadByte(0x000000, 0x0BFFFF, NULL, ROM+0x000000);			// 68000 ROM
   AddReadByte(0x100000, 0x10FFFF, NULL, RAM+0x000000);			// 68000 RAM
   AddReadByte(0x800000, 0x80FFFF, NULL, RAM_VIDEO);			// SCREEN RAM
   AddReadByte(0x900000, 0x90FFFF, NULL, RAM_OBJECT);			// OBJECT RAM
   AddReadByte(0x300000, 0x30000F, tc0220ioc_rb_bswap, NULL);		// INPUT
   AddReadByte(0x320000, 0x320003, tc0140syt_read_main_68k, NULL);	// SOUND COMM
   AddReadByte(0x000000, 0xFFFFFF, DefBadReadByte, NULL);		// <Bad Reads>
   AddReadByte(-1, -1, NULL, NULL);

   AddReadWord(0x000000, 0x0BFFFF, NULL, ROM+0x000000);			// 68000 ROM
   AddReadWord(0x100000, 0x10FFFF, NULL, RAM+0x000000);			// 68000 RAM
   AddReadWord(0x800000, 0x80FFFF, NULL, RAM_VIDEO);			// SCREEN RAM
   AddReadWord(0x900000, 0x90FFFF, NULL, RAM_OBJECT);			// OBJECT RAM
   AddReadWord(0x200000, 0x201FFF, NULL, RAM+0x030000);			// COLOR RAM
   AddReadWord(0x300000, 0x30000F, tc0220ioc_rw_bswap, NULL);		// INPUT
   AddReadWord(0x000000, 0xFFFFFF, DefBadReadWord, NULL);		// <Bad Reads>
   AddReadWord(-1, -1, NULL, NULL);

   AddWriteByte(0x100000, 0x10FFFF, NULL, RAM+0x000000);		// 68000 RAM
   AddWriteByte(0x806000, 0x806FFF, tc0100scn_0_gfx_fg0_wb_r270, NULL);	// FG0 GFX RAM
   AddWriteByte(0x800000, 0x80FFFF, NULL, RAM_VIDEO);			// SCREEN RAM
   AddWriteByte(0x900000, 0x90FFFF, NULL, RAM_OBJECT);			// OBJECT RAM
   AddWriteByte(0x320000, 0x320003, tc0140syt_write_main_68k, NULL);	// SOUND COMM
   AddWriteByte(0x300000, 0x30000F, tc0220ioc_wb_bswap, NULL);		// INPUT
   AddWriteByte(0xAA0000, 0xAA0001, Stop68000, NULL);			// Trap Idle 68000
   AddWriteByte(0x000000, 0xFFFFFF, DefBadWriteByte, NULL);		// <Bad Writes>
   AddWriteByte(-1, -1, NULL, NULL);

   AddWriteWord(0x100000, 0x10FFFF, NULL, RAM+0x000000);		// 68000 RAM
   AddWriteWord(0x806000, 0x806FFF, tc0100scn_0_gfx_fg0_ww_r270, NULL);	// FG0 GFX RAM
   AddWriteWord(0x800000, 0x80FFFF, NULL, RAM_VIDEO);			// SCREEN RAM
   AddWriteWord(0x900000, 0x90FFFF, NULL, RAM_OBJECT);			// OBJECT RAM
   AddWriteWord(0x200000, 0x201FFF, NULL, RAM+0x030000);		// COLOR RAM
   AddWriteWord(0x820000, 0x82000F, NULL, RAM_SCROLL);			// SCROLL RAM
   AddWriteWord(0xB00000, 0xB0000F, NULL, RAM+0x032200);		// ??? RAM
   AddWriteWord(0x300000, 0x30000F, tc0220ioc_ww_bswap, NULL);		// INPUT
   AddWriteWord(0x000000, 0xFFFFFF, DefBadWriteWord, NULL);		// <Bad Writes>
   AddWriteWord(-1, -1, NULL, NULL);

   AddInitMemory();	// Set Starscream mem pointers... 
}

void ClearGunFront(void)
{
   RemoveTaitoYM2610();

   #ifdef RAINE_DEBUG
      //save_debug("ROM.bin",ROM,0x0C0000,1);
      //save_debug("RAM.bin",RAM,0x048000,1);
      //save_debug("GFX.bin",GFX,0x500000,0);
   #endif
}

void ExecuteGunFrontFrame(void)
{
   cpu_execute_cycles(CPU_68K_0, CPU_FRAME_MHz(20,60) - s68000context.odometer);
   /*#ifdef RAINE_DEBUG
      print_debug("PC:%06x SR:%04x\n",s68000context.pc,s68000context.sr);
   #endif*/
   cpu_interrupt(CPU_68K_0, 6);
   cpu_interrupt(CPU_68K_0, 5);
   s68000context.odometer = 0;
   cpu_execute_cycles(CPU_68K_0, CPU_FRAME_MHz(20,60));

   Taito2610_Frame();			// Z80 and YM2610
}

void DrawGunFront(void)
{
   ClearPaletteMap();

   // Init tc0100scn emulation
   // ------------------------

   tc0100scn_layer_count = 0;
   tc0100scn[0].ctrl = ReadWord(RAM_SCROLL+12);

   // BG0
   // ---

   render_tc0100scn_layer_mapped_r270(0,0);

   // BG1
   // ---

   render_tc0100scn_layer_mapped_r270(0,1);

   // OBJECT
   // ------

   render_tc0200obj_mapped_r270();

   // FG0
   // ---

   render_tc0100scn_layer_mapped_r270(0,2);
}