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65816.js
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finish adding cycle counting to the remaining instructions

This commit is contained in:
Preston Skupinski 2011-10-30 00:18:36 -04:00
parent 06d512a668
commit a1a337f3f6
1 changed files with 252 additions and 9 deletions
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261
cpu.js
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@ -1684,6 +1684,8 @@ var ASL_accumulator = {
return 1;
},
execute:function(cpu) {
cpu.cycle_count+=2;
if(cpu.p.e|cpu.p.m) {
cpu.p.c = cpu.r.a >> 7;
cpu.r.a = cpu.r.a << 1;
@ -1709,6 +1711,8 @@ var ASL_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) {
@ -1719,6 +1723,7 @@ var ASL_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;
@ -1745,6 +1750,11 @@ var ASL_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) {
@ -1755,6 +1765,8 @@ var ASL_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;
@ -1781,6 +1793,8 @@ var ASL_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;
@ -1793,6 +1807,8 @@ var ASL_direct_page_indexed_x = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
ASL_direct_page.execute(cpu, [bytes[0]+cpu.r.x]);
}
};
@ -1926,10 +1942,13 @@ var EOR_const = {
}
},
execute:function(cpu, bytes) {
cpu.cycle_count+=2;
if(cpu.p.e|cpu.p.m) {
cpu.r.a ^= bytes[0];
cpu.p.n = cpu.r.a >> 7;
} else {
cpu.cycle_count++;
cpu.r.a ^= (bytes[1]<<8)|bytes[0];
cpu.p.n = cpu.r.a >> 15;
}
@ -1947,6 +1966,8 @@ var EOR_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) {
EOR_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -1963,6 +1984,8 @@ var EOR_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) {
EOR_const.execute(cpu, [cpu.mmu.read_byte_long(location, bytes[2])]);
@ -1979,6 +2002,8 @@ var EOR_absolute_long_indexed_x = {
return 4;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
var location = ((bytes[1]<<8)|bytes[0]) + cpu.r.x;
if(location & 0x10000) {
bytes[2]++;
@ -2005,6 +2030,11 @@ var EOR_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) {
EOR_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -2021,6 +2051,11 @@ var EOR_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);
@ -2040,6 +2075,11 @@ var EOR_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);
@ -2077,6 +2117,11 @@ var EOR_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);
@ -2107,6 +2152,11 @@ var EOR_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);
@ -2129,10 +2179,21 @@ var EOR_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) {
EOR_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
@ -2148,7 +2209,12 @@ var EOR_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;
EOR_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -2160,7 +2226,12 @@ var EOR_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;
EOR_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -2172,6 +2243,8 @@ var EOR_direct_page_indexed_x = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
EOR_direct_page.execute(cpu, [bytes[0]+cpu.r.x]);
}
};
@ -2181,6 +2254,8 @@ var EOR_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);
EOR_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -2202,6 +2277,8 @@ var EOR_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);
@ -2263,10 +2340,14 @@ var ORA_const = {
}
},
execute:function(cpu, bytes) {
cpu.cycle_count+=2;
if(cpu.p.e|cpu.p.m) {
cpu.r.a |= bytes[0];
cpu.p.n = cpu.r.a >> 7;
} else {
cpu.cycle_count++;
cpu.r.a |= (bytes[1]<<8)|bytes[0];
cpu.p.n = cpu.r.a >> 15;
}
@ -2284,6 +2365,8 @@ var ORA_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) {
ORA_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -2300,6 +2383,8 @@ var ORA_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) {
ORA_const.execute(cpu, [cpu.mmu.read_byte_long(location, bytes[2])]);
@ -2316,6 +2401,8 @@ var ORA_absolute_long_indexed_x = {
return 4;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
var location = ((bytes[1]<<8)|bytes[0]) + cpu.r.x;
if(location & 0x10000) {
bytes[2]++;
@ -2342,6 +2429,11 @@ var ORA_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) {
ORA_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -2358,6 +2450,11 @@ var ORA_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);
@ -2377,6 +2474,11 @@ var ORA_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);
@ -2414,6 +2516,11 @@ var ORA_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);
@ -2436,6 +2543,11 @@ var ORA_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);
@ -2466,10 +2578,20 @@ var ORA_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) {
ORA_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
@ -2485,7 +2607,12 @@ var ORA_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((location&0xff00)!=(original_location&0xff00))
cpu.cycle_count++;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
ORA_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -2497,7 +2624,12 @@ var ORA_absolute_indexed_y = {
return 3;
},
execute:function(cpu, bytes) {
var original_location = (bytes[1]<<8)|bytes[0];
var location = ((bytes[1]<<8)|bytes[0])+cpu.r.y;
if((original_location&0xff00)!=(location&0xff00))
cpu.cycle_count++;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
ORA_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -2509,6 +2641,8 @@ var ORA_direct_page_indexed_x = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
ORA_direct_page.execute(cpu, [bytes[0]+cpu.r.x]);
}
};
@ -2518,6 +2652,8 @@ var ORA_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);
ORA_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -2539,6 +2675,8 @@ var ORA_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);
@ -2600,10 +2738,14 @@ var AND_const = {
}
},
execute:function(cpu, bytes) {
cpu.cycle_count+=2;
if(cpu.p.e|cpu.p.m) {
cpu.r.a &= bytes[0];
cpu.p.n = cpu.r.a >> 7;
} else {
cpu.cycle_count++;
cpu.r.a &= (bytes[1]<<8)|bytes[0];
cpu.p.n = cpu.r.a >> 15;
}
@ -2621,6 +2763,8 @@ var AND_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) {
AND_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -2637,6 +2781,8 @@ var AND_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) {
AND_const.execute(cpu, [cpu.mmu.read_byte_long(location, bytes[2])]);
@ -2653,6 +2799,8 @@ var AND_absolute_long_indexed_x = {
return 4;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=3;
var location = ((bytes[1]<<8)|bytes[0]) + cpu.r.x;
if(location & 0x10000) {
bytes[2]++;
@ -2679,6 +2827,11 @@ var AND_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) {
AND_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -2695,6 +2848,11 @@ var AND_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);
@ -2714,6 +2872,11 @@ var AND_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);
@ -2751,6 +2914,11 @@ var AND_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);
@ -2773,6 +2941,11 @@ var AND_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);
@ -2803,10 +2976,20 @@ var AND_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) {
AND_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
@ -2822,7 +3005,12 @@ var AND_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((location&0xff00)!=(original_location&0xff00))
cpu.cycle_count++;
var location_high_byte = location >> 8;
var location_low_byte = location & 0x00ff;
AND_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -2834,7 +3022,12 @@ var AND_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;
AND_absolute.execute(cpu, [location_low_byte, location_high_byte]);
@ -2846,6 +3039,8 @@ var AND_direct_page_indexed_x = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count++;
AND_direct_page.execute(cpu, [bytes[0]+cpu.r.x]);
}
};
@ -2855,6 +3050,8 @@ var AND_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);
AND_const.execute(cpu, [cpu.mmu.read_byte(location)]);
@ -2876,6 +3073,8 @@ var AND_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);
@ -3136,7 +3335,7 @@ var CMP_direct_page = {
return 2;
},
execute:function(cpu, bytes) {
cpu.cycle_count+=1;
cpu.cycle_count++;
if((cpu.r.d&0xff)!=0)
cpu.cycle_count++;
@ -6068,6 +6267,8 @@ var DEC_absolute = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=6;
var location = (bytes[1]<<8)|bytes[0];
var temp;
if(cpu.p.e|cpu.p.m) {
@ -6087,6 +6288,8 @@ var DEC_absolute = {
}
}
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location);
var high_byte = cpu.mmu.read_byte(location+1);
temp = (high_byte<<8) | low_byte;
@ -6116,6 +6319,8 @@ var DEC_absolute_indexed_x = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=7;
var location = ((bytes[1]<<8)|bytes[0]) + cpu.r.x;
var temp;
if(cpu.p.e|cpu.p.m) {
@ -6135,6 +6340,8 @@ var DEC_absolute_indexed_x = {
}
}
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location&0xffff);
var high_byte = cpu.mmu.read_byte((location+1)&0xffff);
temp = (high_byte<<8) | low_byte;
@ -6164,6 +6371,11 @@ var DEC_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 temp;
if(cpu.p.e|cpu.p.m) {
@ -6183,6 +6395,8 @@ var DEC_direct_page = {
}
}
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location);
var high_byte = cpu.mmu.read_byte(location+1);
temp = (high_byte<<8) | low_byte;
@ -6212,6 +6426,11 @@ var DEC_direct_page_indexed_x = {
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 + cpu.r.x;
var temp;
if(cpu.p.e|cpu.p.m) {
@ -6231,6 +6450,8 @@ var DEC_direct_page_indexed_x = {
}
}
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location&0xffff);
var high_byte = cpu.mmu.read_byte((location+1)&0xffff);
temp = (high_byte<<8) | low_byte;
@ -6335,6 +6556,8 @@ var INC_absolute = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=6;
var location = (bytes[1]<<8)|bytes[0]
var temp;
if(cpu.p.e|cpu.p.m) {
@ -6348,6 +6571,8 @@ var INC_absolute = {
cpu.p.z = 0;
}
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location);
var high_byte = cpu.mmu.read_byte(location+1);
temp = (high_byte<<8) | low_byte;
@ -6371,6 +6596,8 @@ var INC_absolute_indexed_x = {
return 3;
},
execute: function(cpu, bytes) {
cpu.cycle_count+=7;
var location = ((bytes[1]<<8)|bytes[0]) + cpu.r.x;
var temp;
if(cpu.p.e|cpu.p.m) {
@ -6384,6 +6611,8 @@ var INC_absolute_indexed_x = {
cpu.p.z = 0;
}
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location&0xffff);
var high_byte = cpu.mmu.read_byte((location+1)&0xffff);
temp = (high_byte<<8) | low_byte;
@ -6407,6 +6636,11 @@ var INC_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 temp;
if(cpu.p.e|cpu.p.m) {
@ -6420,6 +6654,8 @@ var INC_direct_page = {
cpu.p.z = 0;
}
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location);
var high_byte = cpu.mmu.read_byte(location+1);
temp = (high_byte<<8) | low_byte;
@ -6443,6 +6679,11 @@ var INC_direct_page_indexed_x = {
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 + cpu.r.x;
var temp;
if(cpu.p.e|cpu.p.m) {
@ -6456,6 +6697,8 @@ var INC_direct_page_indexed_x = {
cpu.p.z = 0;
}
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(location&0xffff);
var high_byte = cpu.mmu.read_byte((location+1)&0xffff);
temp = (high_byte<<8) | low_byte;