void gb_reset() { set_gb_type(); g_regs.SC=0; g_regs.DIV=0; g_regs.TIMA=0; g_regs.TMA=0; g_regs.TAC=0; g_regs.LCDC=0x91; g_regs.STAT=0; g_regs.SCY=0; g_regs.SCX=0; g_regs.LY=153; g_regs.LYC=0; g_regs.BGP=0xFC; g_regs.OBP1=0xFF; g_regs.OBP2=0xFF; g_regs.WY=0; g_regs.WX=0; g_regs.IF=0; g_regs.IE=0; cpu_irq_check(); // memset(&c_regs,0,sizeof(c_regs)); cpu_reset(); lcd_reset(); apu_reset(); mbc_reset(); sgb_reset(); gbe_reset(); gb_fill_vframe(0); // now_frame=0; gbSkip=0; //skip_buf=0; re_render=0; // char *gb_names[]={"Invalid","Gameboy","SuperGameboy","Gameboy Color","Gameboy Advance"}; // if (m_rom->get_loaded()) // renderer_output_log("Current GB Type : %s \n",gb_names[m_rom->get_info()->gb_type]); }
void gb_run() { #ifdef PROFILE prof_enter(PF_GB_RUN); #endif //if (rom_get_loaded()){ if (g_regs.LCDC&0x80){ // LCDC 起動時 g_regs.LY=(g_regs.LY+1)%154; g_regs.STAT&=0xF8; if (g_regs.LYC==g_regs.LY){ g_regs.STAT|=4; if (g_regs.STAT&0x40) cpu_irq(INT_LCDC); } if (g_regs.LY==0){ renderer_refresh(); if (now_frame>=skip){ //pgFillvram(0); render_screen(vframe); now_frame=0; } else now_frame++; lcd_clear_win_count(); // skip=skip_buf; } if (g_regs.LY>=144){ // VBlank 期間中 g_regs.STAT|=1; if (g_regs.LY==144){ cpu_exec(72); cpu_irq(INT_VBLANK); if (g_regs.STAT&0x10) cpu_irq(INT_LCDC); cpu_exec(456-80); } else if (g_regs.LY==153){ cpu_exec(80); g_regs.LY=0; cpu_exec(456-80); // 前のラインのかなり早目から0になるようだ。 g_regs.LY=153; } else cpu_exec(456); } else{ // VBlank 期間外 g_regs.STAT|=2; if (g_regs.STAT&0x20) cpu_irq(INT_LCDC); cpu_exec(80); // state=2 g_regs.STAT|=3; cpu_exec(169); // state=3 if (dma_executing){ // HBlank DMA if (b_dma_first){ dma_dest_bank=vram_bank; if (dma_src<0x4000) dma_src_bank=get_rom(); else if (dma_src<0x8000) dma_src_bank=mbc_get_rom(); else if (dma_src>=0xA000&&dma_src<0xC000) dma_src_bank=mbc_get_sram()-0xA000; else if (dma_src>=0xC000&&dma_src<0xD000) dma_src_bank=ram-0xC000; else if (dma_src>=0xD000&&dma_src<0xE000) dma_src_bank=ram_bank-0xD000; else dma_src_bank=NULL; b_dma_first=false; } memcpy(dma_dest_bank+(dma_dest&0x1ff0),dma_src_bank+dma_src,16); // fprintf(cpu_file,"%03d : dma exec %04X -> %04X rest %d\n",g_regs.LY,cpu_dma_src,cpu_dma_dest,cpu_dma_rest); dma_src+=16; dma_src&=0xfff0; dma_dest+=16; dma_dest&=0xfff0; dma_rest--; if (!dma_rest) dma_executing=false; // cpu_total_clock+=207*(cpu_speed?2:1); // cpu_sys_clock+=207*(cpu_speed?2:1); // cpu_div_clock+=207*(cpu_speed?2:1); // g_regs.STAT|=3; if (now_frame>=skip && !sgb_mask) lcd_render(vframe,g_regs.LY); g_regs.STAT&=0xfc; cpu_exec(207); // state=3 } else{ /* if (lcd_get_sprite_count()){ if (lcd_get_sprite_count()>=10){ cpu_exec(129); if ((g_regs.STAT&0x08)) cpu_irq(INT_LCDC); g_regs.STAT&=0xfc; if (now_frame>=skip) lcd_render(vframe,g_regs.LY); cpu_exec(78); // state=0 } else{ cpu_exec(129*lcd_get_sprite_count()/10); if ((g_regs.STAT&0x08)) cpu_irq(INT_LCDC); g_regs.STAT&=0xfc; if (now_frame>=skip) lcd_render(vframe,g_regs.LY); cpu_exec(207-(129*lcd_get_sprite_count()/10)); // state=0 } } else{ */ g_regs.STAT&=0xfc; if (now_frame>=skip && !sgb_mask) lcd_render(vframe,g_regs.LY); if ((g_regs.STAT&0x08)) cpu_irq(INT_LCDC); cpu_exec(207); // state=0 // } } } } else{ // LCDC 停止時 g_regs.LY=0; // g_regs.LY=(g_regs.LY+1)%154; re_render++; if (re_render>=154){ gb_fill_vframe(0xff); renderer_refresh(); if (now_frame>=skip){ //pgFillvram(0); render_screen(vframe); now_frame=0; } else now_frame++; lcd_clear_win_count(); re_render=0; } g_regs.STAT&=0xF8; cpu_exec(456); } //} #ifdef PROFILE prof_out(); #endif }