PCEmulator.js

function set_hard_irq_wrapper(irq){this.hard_irq=irq;}
function return_cycle_count(){return this.cycle_count;}
function PCEmulator(params){var cpu;cpu=new CPU_X86();this.cpu=cpu;cpu.phys_mem_resize(params.mem_size);this.init_ioports();this.register_ioport_write(0x80,1,1,this.ioport80_write);this.pic=new PIC_Controller(this,0x20,0xa0,set_hard_irq_wrapper.bind(cpu));this.pit=new PIT(this,this.pic.set_irq.bind(this.pic,0),return_cycle_count.bind(cpu));this.cmos=new CMOS(this);this.serial=new Serial(this,0x3f8,this.pic.set_irq.bind(this.pic,4),params.serial_write);this.kbd=new KBD(this,this.reset.bind(this));this.reset_request=0;if(params.clipboard_get&&params.clipboard_set){this.jsclipboard=new clipboard_device(this,0x3c0,params.clipboard_get,params.clipboard_set,params.get_boot_time);}
cpu.ld8_port=this.ld8_port.bind(this);cpu.ld16_port=this.ld16_port.bind(this);cpu.ld32_port=this.ld32_port.bind(this);cpu.st8_port=this.st8_port.bind(this);cpu.st16_port=this.st16_port.bind(this);cpu.st32_port=this.st32_port.bind(this);cpu.get_hard_intno=this.pic.get_hard_intno.bind(this.pic);}
PCEmulator.prototype.load_binary=function(binary_array,mem8_loc){return this.cpu.load_binary(binary_array,mem8_loc);};PCEmulator.prototype.start=function(){setTimeout(this.timer_func.bind(this),10);};PCEmulator.prototype.timer_func=function(){var exit_status,Ncycles,do_reset,err_on_exit,PC,cpu;PC=this;cpu=PC.cpu;Ncycles=cpu.cycle_count+100000;do_reset=false;err_on_exit=false;exec_loop:while(cpu.cycle_count<Ncycles){PC.pit.update_irq();exit_status=cpu.exec(Ncycles-cpu.cycle_count);if(exit_status==256){if(PC.reset_request){do_reset=true;break;}}else if(exit_status==257){err_on_exit=true;break;}else{do_reset=true;break;}}
if(!do_reset){if(err_on_exit){setTimeout(this.timer_func.bind(this),10);}else{setTimeout(this.timer_func.bind(this),0);}}};PCEmulator.prototype.init_ioports=function(){var i,readw,writew;this.ioport_readb_table=new Array();this.ioport_writeb_table=new Array();this.ioport_readw_table=new Array();this.ioport_writew_table=new Array();this.ioport_readl_table=new Array();this.ioport_writel_table=new Array();readw=this.default_ioport_readw.bind(this);writew=this.default_ioport_writew.bind(this);for(i=0;i<1024;i++){this.ioport_readb_table[i]=this.default_ioport_readb;this.ioport_writeb_table[i]=this.default_ioport_writeb;this.ioport_readw_table[i]=readw;this.ioport_writew_table[i]=writew;this.ioport_readl_table[i]=this.default_ioport_readl;this.ioport_writel_table[i]=this.default_ioport_writel;}};PCEmulator.prototype.default_ioport_readb=function(port_num){var x;x=0xff;return x;};PCEmulator.prototype.default_ioport_readw=function(port_num){var x;x=this.ioport_readb_table[port_num](port_num);port_num=(port_num+1)&(1024-1);x|=this.ioport_readb_table[port_num](port_num)<<8;return x;};PCEmulator.prototype.default_ioport_readl=function(port_num){var x;x=-1;return x;};PCEmulator.prototype.default_ioport_writeb=function(port_num,x){};PCEmulator.prototype.default_ioport_writew=function(port_num,x){this.ioport_writeb_table[port_num](port_num,x&0xff);port_num=(port_num+1)&(1024-1);this.ioport_writeb_table[port_num](port_num,(x>>8)&0xff);};PCEmulator.prototype.default_ioport_writel=function(port_num,x){};PCEmulator.prototype.ld8_port=function(port_num){var x;x=this.ioport_readb_table[port_num&(1024-1)](port_num);return x;};PCEmulator.prototype.ld16_port=function(port_num){var x;x=this.ioport_readw_table[port_num&(1024-1)](port_num);return x;};PCEmulator.prototype.ld32_port=function(port_num){var x;x=this.ioport_readl_table[port_num&(1024-1)](port_num);return x;};PCEmulator.prototype.st8_port=function(port_num,x){this.ioport_writeb_table[port_num&(1024-1)](port_num,x);};PCEmulator.prototype.st16_port=function(port_num,x){this.ioport_writew_table[port_num&(1024-1)](port_num,x);};PCEmulator.prototype.st32_port=function(port_num,x){this.ioport_writel_table[port_num&(1024-1)](port_num,x);};PCEmulator.prototype.register_ioport_read=function(start,len,iotype,io_callback){var i;switch(iotype){case 1:for(i=start;i<start+len;i++){this.ioport_readb_table[i]=io_callback;}
break;case 2:for(i=start;i<start+len;i+=2){this.ioport_readw_table[i]=io_callback;}
break;case 4:for(i=start;i<start+len;i+=4){this.ioport_readl_table[i]=io_callback;}
break;}};PCEmulator.prototype.register_ioport_write=function(start,len,iotype,io_callback){var i;switch(iotype){case 1:for(i=start;i<start+len;i++){this.ioport_writeb_table[i]=io_callback;}
break;case 2:for(i=start;i<start+len;i+=2){this.ioport_writew_table[i]=io_callback;}
break;case 4:for(i=start;i<start+len;i+=4){this.ioport_writel_table[i]=io_callback;}
break;}};PCEmulator.prototype.ioport80_write=function(mem8_loc,data){};PCEmulator.prototype.reset=function(){this.request_request=1;};