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65816.js
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added cycle counting to even more instructions

This commit is contained in:
Preston Skupinski 2011-10-29 22:30:28 -04:00
parent 5a44410146
commit 06d512a668
1 changed files with 299 additions and 6 deletions
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305
cpu.js
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@ -1390,6 +1390,8 @@ var ROR_accumulator = {
return 1;
},
execute:function(cpu) {
cpu.cycle_count+=2;
if(cpu.p.e|cpu.p.m) {
var old_c = cpu.p.c;
cpu.p.c = cpu.r.a & 0x01;
@ -1419,6 +1421,8 @@ var ROR_absolute = {
return 3;
},
execute:function(cpu,bytes) {
cpu.cycle_count+=6;
var location = (bytes[1]<<8)|bytes[0];
var shiftee;
if(cpu.p.e|cpu.p.m) {
@ -1431,6 +1435,8 @@ var ROR_absolute = {
cpu.p.n = shiftee >> 7;
cpu.mmu.store_byte(location, shiftee);
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location);
var high_byte = cpu.mmu.read_byte(location+1);
shiftee = (high_byte<<8)|low_byte;
@ -1459,6 +1465,11 @@ var ROR_direct_page = {
return 2;
},
execute:function(cpu,bytes) {
cpu.cycle_count+=5;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.r.d;
var shiftee;
if(cpu.p.e|cpu.p.m) {
@ -1471,6 +1482,8 @@ var ROR_direct_page = {
cpu.p.n = shiftee >> 7;
cpu.mmu.store_byte(location, shiftee);
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location);
var high_byte = cpu.mmu.read_byte(location+1);
shiftee = (high_byte<<8)|low_byte;
@ -1499,6 +1512,8 @@ var ROR_absolute_indexed_x = {
return 3;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.x;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
@ -1511,6 +1526,8 @@ var ROR_direct_page_indexed_x = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
ROR_direct_page.execute(cpu, [bytes[0]+cpu.r.x]);
}
};
@ -1520,6 +1537,8 @@ var ROL_accumulator = {
return 1;
},
execute:function(cpu) {
cpu.cycle_count+=2;
if(cpu.p.e|cpu.p.m) {
var old_c = cpu.p.c;
cpu.p.c = cpu.r.a >> 7;
@ -1549,6 +1568,8 @@ var ROL_absolute = {
return 3;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=6;
var location = (bytes[1]<<8)|bytes[0];
var shiftee;
if(cpu.p.e|cpu.p.m) {
@ -1561,6 +1582,8 @@ var ROL_absolute = {
cpu.p.n = shiftee >> 7;
cpu.mmu.store_byte(location, shiftee);
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location);
var high_byte = cpu.mmu.read_byte(location+1);
shiftee = (high_byte<<8)|low_byte;
@ -1589,6 +1612,11 @@ var ROL_direct_page = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=5;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.r.d;
var shiftee;
if(cpu.p.e|cpu.p.m) {
@ -1601,6 +1629,8 @@ var ROL_direct_page = {
cpu.p.n = shiftee >> 7;
cpu.mmu.store_byte(location, shiftee);
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location);
var high_byte = cpu.mmu.read_byte(location+1);
shiftee = (high_byte<<8)|low_byte;
@ -1629,6 +1659,8 @@ var ROL_absolute_indexed_x = {
return 3;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.x;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
@ -1641,6 +1673,8 @@ var ROL_direct_page_indexed_x = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
ROL_direct_page.execute(cpu, [bytes[0]+cpu.r.x]);
}
};
@ -3064,6 +3098,8 @@ var CMP_const = {
}
},
execute:function(cpu, bytes) {
cpu.cycle_count+=2;
var result;
if(cpu.p.e|cpu.p.m) {
result = cpu.r.a - bytes[0];
@ -3075,6 +3111,8 @@ var CMP_const = {
}
cpu.p.n = result >> 7;
} else {
cpu.cycle_count++;
result = cpu.r.a - ((bytes[1]<<8)|bytes[0]);
if(result<0) {
cpu.p.c = 0;
@ -3098,6 +3136,11 @@ var CMP_direct_page = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=1;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
if(cpu.p.e|cpu.p.m) {
CMP_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -3114,6 +3157,8 @@ var CMP_direct_page_indexed_x = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
CMP_direct_page.execute(cpu, [bytes[0]+cpu.r.x]);
}
};
@ -3123,6 +3168,11 @@ var CMP_direct_page_indirect = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte(location+1);
@ -3142,6 +3192,11 @@ var CMP_direct_page_indexed_x_indirect = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
if(cpu.p.e) {
var location = (bytes[0] + cpu.r.x) & 0xff;
var low_byte_loc = cpu.mmu.read_byte_long((location+cpu.r.d)&0xffff, 0);
@ -3179,6 +3234,11 @@ var CMP_direct_page_indirect_long = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(location&0xffff);
var high_byte_loc = cpu.mmu.read_byte((location+1)&0xffff);
@ -3201,6 +3261,11 @@ var CMP_direct_page_indirect_long_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(location&0xffff);
var high_byte_loc = cpu.mmu.read_byte((location+1)&0xffff);
@ -3231,10 +3296,21 @@ var CMP_direct_page_indirect_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte(location+1);
var absolute_location = ((high_byte_loc<<8) | low_byte_loc) + cpu.r.y;
var original_location = (high_byte_loc<<8) | low_byte_loc;
var absolute_location = original_location + cpu.r.y;
if((original_location&0xff00)!=(absolute_location&0xff00))
cpu.cycle_count++;
if(cpu.p.e|cpu.p.m) {
CMP_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
@ -3250,6 +3326,8 @@ var CMP_absolute = {
return 3;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=2;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.m) {
CMP_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -3266,6 +3344,8 @@ var CMP_absolute_long = {
return 4;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.m) {
CMP_const.execute(cpu, [cpu.mmu.read_byte_long(location, bytes[2])]);
@ -3282,6 +3362,8 @@ var CMP_absolute_long_indexed_x = {
return 4;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=5;
var location = ((bytes[1]<<8)|bytes[0]) + cpu.r.x;
if(location & 0x10000) {
bytes[2]++;
@ -3308,7 +3390,12 @@ var CMP_absolute_indexed_x = {
return 3;
},
execute:function(cpu, bytes) {
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.x;
var original_location = (bytes[1]<<8)|bytes[0];
var location = original_location+cpu.r.x;
if((original_location&0xff00)!=(location&0xff00))
cpu.cycle_count++;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
CMP_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -3320,7 +3407,12 @@ var CMP_absolute_indexed_y = {
return 3;
},
execute:function(cpu, bytes) {
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.y;
var original_location = (bytes[1]<<8)|bytes[0];
var location = original_location+cpu.r.y;
if((original_location&0xff00)!=(location&0xff00))
cpu.cycle_count++;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
CMP_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -3332,6 +3424,8 @@ var CMP_stack_relative = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cyle_count+=2;
if(cpu.p.e) {
var location = 0x100 | ((cpu.r.s + bytes[0]) & 0xff);
CMP_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -3353,6 +3447,8 @@ var CMP_stack_relative_indirect_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=5;
if(cpu.p.e) {
var location_loc = 0x100 | ((cpu.r.s + bytes[0]) & 0xff);
var low_byte = cpu.mmu.read_byte(location_loc);
@ -3414,6 +3510,8 @@ var SBC_const = {
}
},
execute:function(cpu, bytes) {
cpu.cycle_count+=2;
var old_a = cpu.r.a;
var temp = 0;
if(cpu.p.c===0)
@ -3465,6 +3563,8 @@ var SBC_const = {
}
}
} else {
cpu.cycle_count++;
var argument = (bytes[1]<<8)|bytes[0];
var temp = 0;
if(cpu.p.c===0)
@ -3532,6 +3632,11 @@ var SBC_direct_page = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
if(cpu.p.e|cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -3548,6 +3653,8 @@ var SBC_absolute = {
return 3;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=2;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -3564,6 +3671,8 @@ var SBC_absolute_long = {
return 4;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte_long(location, bytes[2])]);
@ -3580,6 +3689,8 @@ var SBC_absolute_long_indexed_x = {
return 4;
},
execute:function(cpu, bytes) {
cpu.cyle_count+=3;
var location = ((bytes[1]<<8)|bytes[0]) + cpu.r.x;
if(location & 0x10000) {
bytes[2]++;
@ -3606,6 +3717,11 @@ var SBC_direct_page_indexed_x_indirect = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
if(cpu.p.e) {
var location = (bytes[0] + cpu.r.x) & 0xff;
var low_byte_loc = cpu.mmu.read_byte_long((location+cpu.r.d)&0xffff, 0);
@ -3643,6 +3759,11 @@ var SBC_direct_page_indirect_long = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(location&0xffff);
var high_byte_loc = cpu.mmu.read_byte((location+1)&0xffff);
@ -3665,6 +3786,11 @@ var SBC_direct_page_indirect_long_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(location&0xffff);
var high_byte_loc = cpu.mmu.read_byte((location+1)&0xffff);
@ -3695,10 +3821,21 @@ var SBC_direct_page_indirect_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte(location+1);
var absolute_location = ((high_byte_loc<<8) | low_byte_loc) + cpu.r.y;
var original_location = (high_byte_loc<<8) | low_byte_loc;
var absolute_location = original_location + cpu.r.y;
if((original_location&0xff00)!=(absolute_location&0xff00))
cpu.cycle_count++;
if(cpu.p.e|cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
@ -3714,7 +3851,12 @@ var SBC_absolute_indexed_x = {
return 3;
},
execute:function(cpu, bytes) {
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.x;
var original_location = (bytes[1]<<8)|bytes[0];
var location = original_location+cpu.r.x;
if((original_location&0xff00)!=(location&0xff00))
cpu.cycle_count++;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
SBC_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -3726,7 +3868,12 @@ var SBC_absolute_indexed_y = {
return 3;
},
execute:function(cpu, bytes) {
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.y;
var original_location = (bytes[1]<<8)|bytes[0];
var location = original_location+cpu.r.y;
if((original_location&0xff00)!=(location&0xff00))
cpu.cycle_count++;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
SBC_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -3738,6 +3885,8 @@ var SBC_direct_page_indexed_x = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
SBC_direct_page.execute(cpu, [bytes[0]+cpu.r.x]);
}
};
@ -3747,6 +3896,11 @@ var SBC_direct_page_indirect = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte(location+1);
@ -3766,6 +3920,8 @@ var SBC_stack_relative = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=2;
if(cpu.p.e) {
var location = 0x100 | ((cpu.r.s + bytes[0]) & 0xff);
SBC_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -3787,6 +3943,8 @@ var SBC_stack_relative_indirect_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=5;
if(cpu.p.e) {
var location_loc = 0x100 | ((cpu.r.s + bytes[0]) & 0xff);
var low_byte = cpu.mmu.read_byte(location_loc);
@ -4938,10 +5096,14 @@ var STZ_absolute = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=4;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, 0);
} else {
cpu.cycle_count++;
cpu.mmu.store_byte(location, 0);
cpu.mmu.store_byte(location+1, 0);
}
@ -4953,10 +5115,17 @@ var STZ_direct_page = {
return 2;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=3;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.r.d;
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, 0);
} else {
cpu.cycle_count++;
cpu.mmu.store_byte(location, 0);
cpu.mmu.store_byte(location+1, 0);
}
@ -4968,10 +5137,14 @@ var STZ_absolute_indexed_x = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=5;
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.x;
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, 0);
} else {
cpu.cycle_count++;
cpu.mmu.store_byte(location, 0);
cpu.mmu.store_byte(location+1, 0);
}
@ -4983,10 +5156,17 @@ var STZ_direct_page_indexed_x = {
return 2;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.r.d+cpu.r.x;
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, 0);
} else {
cpu.cycle_count++;
// Check for overflow.
var overflow_check = location - 0xffff;
if(overflow_check > 0) {
@ -5009,12 +5189,19 @@ var STA_direct_page_indirect = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=5;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
if(cpu.p.e|cpu.p.m) {
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte(location+1);
cpu.mmu.store_byte((high_byte_loc<<8) | low_byte_loc, cpu.r.a);
} else {
cpu.cycle_count++;
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte(location+1);
var absolute_location = (high_byte_loc<<8) | low_byte_loc;
@ -5031,6 +5218,11 @@ var STA_direct_page_indirect_long = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=6;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
if(cpu.p.e|cpu.p.m) {
var low_byte_loc = cpu.mmu.read_byte(location&0xffff);
@ -5039,6 +5231,8 @@ var STA_direct_page_indirect_long = {
cpu.mmu.store_byte_long((high_byte_loc<<8) | low_byte_loc, bank_byte,
cpu.r.a);
} else {
cpu.cycle_count++;
var low_byte_loc = cpu.mmu.read_byte(location&0xffff);
var high_byte_loc = cpu.mmu.read_byte((location+1)&0xffff);
var bank_byte = cpu.mmu.read_byte((location+2)&0xffff);
@ -5056,6 +5250,11 @@ var STA_direct_page_indirect_long_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=6;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
if(cpu.p.e|cpu.p.m) {
var low_byte_loc = cpu.mmu.read_byte(location&0xffff);
@ -5068,6 +5267,8 @@ var STA_direct_page_indirect_long_indexed_y = {
}
cpu.mmu.store_byte_long(absolute_location, bank_byte, cpu.r.a);
} else {
cpu.cycle_count++;
var low_byte_loc = cpu.mmu.read_byte(location&0xffff);
var high_byte_loc = cpu.mmu.read_byte((location+1)&0xffff);
var bank_byte = cpu.mmu.read_byte((location+2)&0xffff);
@ -5094,12 +5295,19 @@ var STA_direct_page_indirect_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=6;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d;
if(cpu.p.e|cpu.p.m) {
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte(location+1);
cpu.mmu.store_byte((high_byte_loc<<8) | low_byte_loc, cpu.r.a);
} else {
cpu.cycle_count++;
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte(location+1);
var absolute_location = ((high_byte_loc<<8) | low_byte_loc) + cpu.r.y;
@ -5116,6 +5324,8 @@ var STA_stack_relative = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=4;
if(cpu.p.e) {
var location = 0x100 | ((cpu.r.s + bytes[0]) & 0xff);
cpu.mmu.store_byte(location, cpu.r.a);
@ -5123,6 +5333,8 @@ var STA_stack_relative = {
if(cpu.p.m) {
cpu.mmu.store_byte(cpu.r.s + bytes[0], cpu.r.a);
} else {
cpu.cycle_count++;
var low_byte = cpu.r.a & 0xff;
var high_byte = cpu.r.a >> 8;
var location = cpu.r.s + bytes[0];
@ -5138,6 +5350,8 @@ var STA_stack_relative_indirect_indexed_y = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=7;
if(cpu.p.e) {
var location_loc = 0x100 | ((cpu.r.s + bytes[0]) & 0xff);
var low_byte = cpu.mmu.read_byte(location_loc);
@ -5170,6 +5384,8 @@ var STA_stack_relative_indirect_indexed_y = {
}
cpu.mmu.store_byte(b, cpu.r.a);
} else {
cpu.cycle_count++;
var low_byte;
var high_byte;
if(absolute_location>=0x10000) {
@ -6263,10 +6479,17 @@ var STA_direct_page_indexed_x = {
return 2;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.p.d+cpu.r.x;
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, cpu.r.a);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.a >> 8;
var low_byte = cpu.r.a & 0x00ff;
cpu.mmu.store_byte(location&0xffff, low_byte);
@ -6280,6 +6503,11 @@ var STA_direct_page_indexed_x_indirect = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=6;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
if(cpu.p.e) {
var location = (bytes[0] + cpu.r.x) & 0xff;
var low_byte_loc = cpu.mmu.read_byte_long((location+cpu.r.d)&0xffff, 0);
@ -6292,6 +6520,8 @@ var STA_direct_page_indexed_x_indirect = {
var high_byte_loc = cpu.mmu.read_byte((location+1)&0xffff);
cpu.mmu.store_byte((high_byte_loc<<8)|low_byte_loc, cpu.r.a);
} else {
cpu.cycle_count++;
var location = bytes[0] + cpu.r.d + cpu.r.x;
var low_byte_loc = cpu.mmu.read_byte(location);
var high_byte_loc = cpu.mmu.read_byte((location+1)&0xffff);
@ -6323,10 +6553,17 @@ var STA_direct_page = {
return 2;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=3;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.p.d;
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, cpu.r.a);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.a >> 8;
var low_byte = cpu.r.a & 0x00ff;
cpu.mmu.store_byte(location, low_byte);
@ -6340,10 +6577,14 @@ var STA_absolute_indexed_x = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=5;
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.x;
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, cpu.r.a);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.a >> 8;
var low_byte = cpu.r.a & 0x00ff;
cpu.mmu.store_byte(location, low_byte);
@ -6357,10 +6598,14 @@ var STA_absolute_indexed_y = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=5;
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.y;
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, cpu.r.a);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.a >> 8;
var low_byte = cpu.r.a & 0x00ff;
cpu.mmu.store_byte(location, low_byte);
@ -6374,10 +6619,17 @@ var STY_direct_page_indexed_x = {
return 2;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.p.d+cpu.r.x;
if(cpu.p.e|cpu.p.x) {
cpu.mmu.store_byte(location, cpu.r.y);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.y >> 8;
var low_byte = cpu.r.y & 0x00ff;
cpu.mmu.store_byte(location&0xffff, low_byte);
@ -6391,10 +6643,17 @@ var STY_direct_page = {
return 2;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=3;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.p.d;
if(cpu.p.e|cpu.p.x) {
cpu.mmu.store_byte(location, cpu.r.y);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.y >> 8;
var low_byte = cpu.r.y & 0x00ff;
cpu.mmu.store_byte(location, low_byte);
@ -6408,10 +6667,14 @@ var STY_absolute = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=4;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.x) {
cpu.mmu.store_byte(location, cpu.r.y);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.y >> 8;
var low_byte = cpu.r.y & 0x00ff;
cpu.mmu.store_byte(location, low_byte);
@ -6425,10 +6688,17 @@ var STX_direct_page_indexed_y = {
return 2;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=4;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.p.d+cpu.r.y;
if(cpu.p.e|cpu.p.x) {
cpu.mmu.store_byte(location, cpu.r.x);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.x >> 8;
var low_byte = cpu.r.x & 0x00ff;
cpu.mmu.store_byte(location&0xffff, low_byte);
@ -6442,10 +6712,17 @@ var STX_direct_page = {
return 2;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=3;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
var location = bytes[0]+cpu.p.d;
if(cpu.p.e|cpu.p.x) {
cpu.mmu.store_byte(location, cpu.r.x);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.x >> 8;
var low_byte = cpu.r.x & 0x00ff;
cpu.mmu.store_byte(location, low_byte);
@ -6459,10 +6736,14 @@ var STX_absolute = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=4;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.x) {
cpu.mmu.store_byte(location, cpu.r.x);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.x >> 8;
var low_byte = cpu.r.x & 0x00ff;
cpu.mmu.store_byte(location, low_byte);
@ -6476,10 +6757,14 @@ var STA_absolute_long = {
return 4;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=5;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte_long(location, bytes[2], cpu.r.a);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.a >> 8;
var low_byte = cpu.r.a & 0x00ff;
cpu.mmu.store_byte_long(location, bytes[2], low_byte);
@ -6493,6 +6778,8 @@ var STA_absolute_long_indexed_x = {
return 4;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=5;
var location = ((bytes[1]<<8)|bytes[0]) + cpu.r.x;
if(location & 0x10000) {
location &= 0xffff;
@ -6501,6 +6788,8 @@ var STA_absolute_long_indexed_x = {
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte_long(location, bytes[2], cpu.r.a);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.a >> 8;
var low_byte = cpu.r.a & 0x00ff;
cpu.mmu.store_byte_long(location, bytes[2], low_byte);
@ -6519,10 +6808,14 @@ var STA_absolute = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=4;
var location = (bytes[1]<<8)|bytes[0];
if(cpu.p.e|cpu.p.m) {
cpu.mmu.store_byte(location, cpu.r.a);
} else {
cpu.cycle_count++;
var high_byte = cpu.r.a >> 8;
var low_byte = cpu.r.a & 0x00ff;
cpu.mmu.store_byte(location, low_byte);