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65816.js
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further minor style changes

This commit is contained in:
Preston Skupinski 2011-12-22 00:10:36 -05:00
parent 188fc0e713
commit 1199bff3e1
1 changed files with 153 additions and 163 deletions
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316
cpu.js
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@ -658,9 +658,9 @@ var TRB_direct_page = {
} else {
cpu.cycle_count+=2;
var low_byte = cpu.mmu.read_byte(memory_location);
var high_byte = cpu.mmu.read_byte(memory_location+1);
var data = (high_byte<<8) | low_byte;
var low_byte = cpu.mmu.read_byte(memory_location),
high_byte = cpu.mmu.read_byte(memory_location+1),
data = (high_byte<<8) | low_byte;
if((data & cpu.r.a) === 0) {
cpu.p.z = 1;
} else {
@ -910,9 +910,9 @@ var RTI = {
if(cpu.p.e===0)
cpu.cycle_count++;
var p_byte = cpu.mmu.pull_byte();
var pc_low = cpu.mmu.pull_byte();
var pc_high = cpu.mmu.pull_byte();
var p_byte = cpu.mmu.pull_byte(),
pc_low = cpu.mmu.pull_byte(),
pc_high = cpu.mmu.pull_byte();
cpu.r.pc = (pc_high<<8)|pc_low;
cpu.p.c = p_byte & 0x01;
@ -2658,8 +2658,8 @@ var ORA_stack_relative_indirect_indexed_y = {
} else {
high_byte = cpu.mmu.read_byte(location_loc+1);
}
var absolute_location = ((high_byte<<8)|low_byte)+cpu.r.y;
var b;
var absolute_location = ((high_byte<<8)|low_byte)+cpu.r.y,
b;
if(absolute_location>=0x10000) {
b = cpu.mmu.read_byte_long(absolute_location, cpu.r.dbr+1);
} else {
@ -3724,19 +3724,19 @@ var SBC_const = {
if(cpu.p.d) {
// Form a decimal number out of a.
var ones = cpu.r.a & 0xf;
var tens = (cpu.r.a >>4) & 0xf;
var hundreds = (cpu.r.a >> 8) & 0xf;
var thousands = (cpu.r.a >> 12) & 0xf;
var dec_a = (thousands*1000)+(hundreds*100)+(tens*10)+ones;
var ones = cpu.r.a & 0xf,
tens = (cpu.r.a >>4) & 0xf,
hundreds = (cpu.r.a >> 8) & 0xf,
thousands = (cpu.r.a >> 12) & 0xf,
dec_a = (thousands*1000)+(hundreds*100)+(tens*10)+ones;
// Form a decimal number out of the argument.
ones = argument & 0xf;
tens = (argument >> 4) & 0xf;
hundreds = (argument >> 8) & 0xf;
thousands = (argument >> 12) & 0xf;
var dec_arg = (thousands*1000)+(hundreds*100)+(tens*10)+ones;
var result = dec_a - dec_arg - temp;
var dec_arg = (thousands*1000)+(hundreds*100)+(tens*10)+ones,
result = dec_a - dec_arg - temp;
// Check for decimal overflow.
if(result<0) {
result += 10000;
@ -3793,8 +3793,8 @@ var SBC_direct_page = {
if(cpu.p.e||cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte(memory_location)]);
} else {
var low_byte = cpu.mmu.read_byte(memory_location);
var high_byte = cpu.mmu.read_byte(memory_location+1);
var low_byte = cpu.mmu.read_byte(memory_location),
high_byte = cpu.mmu.read_byte(memory_location+1);
SBC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -3811,8 +3811,8 @@ var SBC_absolute = {
if(cpu.p.e||cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte(memory_location)]);
} else {
var low_byte = cpu.mmu.read_byte(memory_location);
var high_byte = cpu.mmu.read_byte(memory_location+1);
var low_byte = cpu.mmu.read_byte(memory_location),
high_byte = cpu.mmu.read_byte(memory_location+1);
SBC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -3829,8 +3829,8 @@ var SBC_absolute_long = {
if(cpu.p.e||cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte_long(memory_location, bytes[2])]);
} else {
var low_byte = cpu.mmu.read_byte_long(memory_location, bytes[2]);
var high_byte = cpu.mmu.read_byte_long(memory_location+1, bytes[2]);
var low_byte = cpu.mmu.read_byte_long(memory_location, bytes[2]),
high_byte = cpu.mmu.read_byte_long(memory_location+1, bytes[2]);
SBC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -3874,25 +3874,25 @@ var SBC_direct_page_indexed_x_indirect = {
cpu.cycle_count++;
if(cpu.p.e) {
var memory_location = (bytes[0] + cpu.r.x) & 0xff;
var low_byte_loc = cpu.mmu.read_byte_long(memory_location+cpu.r.d, 0);
var high_byte_read_loc = ((memory_location+1)&0xff)+cpu.r.d;
var high_byte_loc = cpu.mmu.read_byte_long(high_byte_read_loc, 0);
var memory_location = (bytes[0] + cpu.r.x) & 0xff,
low_byte_loc = cpu.mmu.read_byte_long(memory_location+cpu.r.d, 0),
high_byte_read_loc = ((memory_location+1)&0xff)+cpu.r.d,
high_byte_loc = cpu.mmu.read_byte_long(high_byte_read_loc, 0);
SBC_const.execute(cpu, [cpu.mmu.read_byte((high_byte_loc<<8) |
low_byte_loc)]);
} else if(cpu.p.m) {
var memory_location = bytes[0] + cpu.r.d + cpu.r.x;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var memory_location = bytes[0] + cpu.r.d + cpu.r.x,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1);
SBC_const.execute(cpu, [cpu.mmu.read_byte((high_byte_loc<<8) |
low_byte_loc)]);
} else {
var memory_location = bytes[0] + cpu.r.d + cpu.r.x;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var absolute_location = (high_byte_loc<<8) | low_byte_loc;
var low_byte = cpu.mmu.read_byte(absolute_location);
var high_byte;
var memory_location = bytes[0] + cpu.r.d + cpu.r.x,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
absolute_location = (high_byte_loc<<8) | low_byte_loc,
low_byte = cpu.mmu.read_byte(absolute_location),
high_byte;
absolute_location++;
if(absolute_location&0x10000) {
high_byte = cpu.mmu.read_byte_long(absolute_location, cpu.r.dbr+1);
@ -3914,17 +3914,17 @@ var SBC_direct_page_indirect_long = {
if((cpu.r.d&0xff)!==0)
cpu.cycle_count++;
var memory_location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var bank_byte = cpu.mmu.read_byte(memory_location+2);
var absolute_location = (high_byte_loc<<8) | low_byte_loc;
var memory_location = bytes[0] + cpu.r.d,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
bank_byte = cpu.mmu.read_byte(memory_location+2),
absolute_location = (high_byte_loc<<8) | low_byte_loc;
if(cpu.p.e||cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte_long(absolute_location,
bank_byte)]);
} else {
var low_byte = cpu.mmu.read_byte_long(absolute_location, bank_byte);
var high_byte = cpu.mmu.read_byte_long(absolute_location+1, bank_byte);
var low_byte = cpu.mmu.read_byte_long(absolute_location, bank_byte),
high_byte = cpu.mmu.read_byte_long(absolute_location+1, bank_byte);
SBC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -3940,11 +3940,11 @@ var SBC_direct_page_indirect_long_indexed_y = {
if((cpu.r.d&0xff)!==0)
cpu.cycle_count++;
var memory_location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var bank_byte = cpu.mmu.read_byte(memory_location+2);
var absolute_location = ((high_byte_loc<<8) | low_byte_loc) + cpu.r.y;
var memory_location = bytes[0] + cpu.r.d,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
bank_byte = cpu.mmu.read_byte(memory_location+2),
absolute_location = ((high_byte_loc<<8) | low_byte_loc) + cpu.r.y;
if(absolute_location >> 16) {
absolute_location &= 0xffff;
bank_byte++;
@ -3974,12 +3974,11 @@ var SBC_direct_page_indirect_indexed_y = {
if((cpu.r.d&0xff)!==0)
cpu.cycle_count++;
var memory_location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var original_location = (high_byte_loc<<8) | low_byte_loc;
var absolute_location = original_location + cpu.r.y;
var memory_location = bytes[0] + cpu.r.d,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
original_location = (high_byte_loc<<8) | low_byte_loc,
absolute_location = original_location + cpu.r.y;
if((original_location&0xff00)!==(absolute_location&0xff00))
cpu.cycle_count++;
@ -3987,8 +3986,8 @@ var SBC_direct_page_indirect_indexed_y = {
if(cpu.p.e||cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
var low_byte = cpu.mmu.read_byte(absolute_location);
var high_byte = cpu.mmu.read_byte(absolute_location+1);
var low_byte = cpu.mmu.read_byte(absolute_location),
high_byte = cpu.mmu.read_byte(absolute_location+1);
SBC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -3999,15 +3998,13 @@ var SBC_absolute_indexed_x = {
return 3;
},
execute:function(cpu, bytes) {
var original_location = (bytes[1]<<8)|bytes[0];
var memory_location = original_location+cpu.r.x;
var original_location = (bytes[1]<<8)|bytes[0],
memory_location = original_location+cpu.r.x;
if((original_location&0xff00)!==(memory_location&0xff00))
cpu.cycle_count++;
var location_high_byte = memory_location >> 8;
var location_low_byte = memory_location & 0x00ff;
SBC_absolute.execute(cpu, [location_low_byte, location_high_byte]);
SBC_absolute.execute(cpu, [memory_location&0x00ff, memory_location>>8]);
}
};
@ -4022,9 +4019,7 @@ var SBC_absolute_indexed_y = {
if((original_location&0xff00)!==(memory_location&0xff00))
cpu.cycle_count++;
var location_high_byte = memory_location >> 8;
var location_low_byte = memory_location & 0x00ff;
SBC_absolute.execute(cpu, [location_low_byte, location_high_byte]);
SBC_absolute.execute(cpu, [memory_location&0x00ff, memory_location>>8]);
}
};
@ -4049,15 +4044,15 @@ var SBC_direct_page_indirect = {
if((cpu.r.d&0xff)!==0)
cpu.cycle_count++;
var memory_location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var absolute_location = (high_byte_loc<<8) | low_byte_loc;
var memory_location = bytes[0] + cpu.r.d,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
absolute_location = (high_byte_loc<<8) | low_byte_loc;
if(cpu.p.e||cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
var low_byte = cpu.mmu.read_byte(absolute_location);
var high_byte = cpu.mmu.read_byte(absolute_location+1);
var low_byte = cpu.mmu.read_byte(absolute_location),
high_byte = cpu.mmu.read_byte(absolute_location+1);
SBC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -4077,9 +4072,9 @@ var SBC_stack_relative = {
if(cpu.p.m) {
SBC_const.execute(cpu, [cpu.mmu.read_byte(cpu.r.s+bytes[0])]);
} else {
var memory_location = cpu.r.s + bytes[0];
var low_byte = cpu.mmu.read_byte(memory_location);
var high_byte = cpu.mmu.read_byte(memory_location+1);
var memory_location = cpu.r.s + bytes[0],
low_byte = cpu.mmu.read_byte(memory_location),
high_byte = cpu.mmu.read_byte(memory_location+1);
SBC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -4094,16 +4089,16 @@ var SBC_stack_relative_indirect_indexed_y = {
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);
var high_byte;
var location_loc = 0x100 | ((cpu.r.s + bytes[0]) & 0xff),
low_byte = cpu.mmu.read_byte(location_loc),
high_byte;
if(location_loc===0x1ff) {
high_byte = cpu.mmu.read_byte(0x100);
} else {
high_byte = cpu.mmu.read_byte(location_loc+1);
}
var absolute_location = ((high_byte<<8)|low_byte)+cpu.r.y;
var b;
var absolute_location = ((high_byte<<8)|low_byte)+cpu.r.y,
b;
if(absolute_location>=0x10000) {
b = cpu.mmu.read_byte_long(absolute_location, cpu.r.dbr+1);
} else {
@ -4111,10 +4106,10 @@ var SBC_stack_relative_indirect_indexed_y = {
}
SBC_const.execute(cpu, [b]);
} else {
var location_loc = cpu.r.s + bytes[0];
var location_low_byte = cpu.mmu.read_byte(location_loc);
var location_high_byte = cpu.mmu.read_byte(location_loc+1);
var absolute_location = (location_high_byte<<8)|location_low_byte;
var location_loc = cpu.r.s + bytes[0],
location_low_byte = cpu.mmu.read_byte(location_loc),
location_high_byte = cpu.mmu.read_byte(location_loc+1),
absolute_location = (location_high_byte<<8)|location_low_byte;
absolute_location += cpu.r.y;
if(cpu.p.m) {
var b;
@ -4125,8 +4120,7 @@ var SBC_stack_relative_indirect_indexed_y = {
}
SBC_const.execute(cpu, [b]);
} else {
var low_byte;
var high_byte;
var low_byte, high_byte;
if(absolute_location>=0x10000) {
low_byte = cpu.mmu.read_byte_long(absolute_location, cpu.r.dbr+1);
high_byte = cpu.mmu.read_byte_long(absolute_location+1, cpu.r.dbr+1);
@ -4159,15 +4153,14 @@ var ADC_const = {
if(cpu.p.d) {
// Form a decimal number out of a.
var ones = cpu.r.a & 0x0f;
var tens = cpu.r.a >>4;
var dec_a = (tens*10)+ones;
var ones = cpu.r.a & 0x0f,
tens = cpu.r.a >>4,
dec_a = (tens*10)+ones;
// Form a decimal number out of the argument.
ones = bytes[0] & 0x0f;
tens = bytes[0] >>4;
var dec_arg = (tens*10)+ones;
var result = dec_a + dec_arg + cpu.p.c;
var result = dec_a + ((tens*10)+ones) + cpu.p.c;
// Check for decimal overflow.
if(result>99) {
result -= 99;
@ -4205,19 +4198,19 @@ var ADC_const = {
var argument = (bytes[1]<<8)|bytes[0];
if(cpu.p.d) {
// Form a decimal number out of a.
var ones = cpu.r.a & 0xf;
var tens = (cpu.r.a >>4) & 0xf;
var hundreds = (cpu.r.a >> 8) & 0xf;
var thousands = (cpu.r.a >> 12) & 0xf;
var dec_a = (thousands*1000)+(hundreds*100)+(tens*10)+ones;
var ones = cpu.r.a & 0xf,
tens = (cpu.r.a >>4) & 0xf,
hundreds = (cpu.r.a >> 8) & 0xf,
thousands = (cpu.r.a >> 12) & 0xf,
dec_a = (thousands*1000)+(hundreds*100)+(tens*10)+ones;
// Form a decimal number out of the argument.
ones = argument & 0xf;
tens = (argument >> 4) & 0xf;
hundreds = (argument >> 8) & 0xf;
thousands = (argument >> 12) & 0xf;
var dec_arg = (thousands*1000)+(hundreds*100)+(tens*10)+ones;
var result = dec_a + dec_arg + cpu.p.c;
var dec_arg = (thousands*1000)+(hundreds*100)+(tens*10)+ones,
result = dec_a + dec_arg + cpu.p.c;
// Check for decimal overflow.
if(result>9999) {
result -= 9999;
@ -4270,8 +4263,8 @@ var ADC_absolute = {
if(cpu.p.e||cpu.p.m) {
ADC_const.execute(cpu, [cpu.mmu.read_byte(memory_location)]);
} else {
var low_byte = cpu.mmu.read_byte(memory_location);
var high_byte = cpu.mmu.read_byte(memory_location+1);
var low_byte = cpu.mmu.read_byte(memory_location),
high_byte = cpu.mmu.read_byte(memory_location+1);
ADC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -4287,8 +4280,8 @@ var ADC_absolute_long = {
if(cpu.p.e||cpu.p.m) {
ADC_const.execute(cpu, [cpu.mmu.read_byte_long(memory_location, bytes[2])]);
} else {
var low_byte = cpu.mmu.read_byte_long(memory_location, bytes[2]);
var high_byte = cpu.mmu.read_byte_long(memory_location+1, bytes[2]);
var low_byte = cpu.mmu.read_byte_long(memory_location, bytes[2]),
high_byte = cpu.mmu.read_byte_long(memory_location+1, bytes[2]);
ADC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -4335,8 +4328,8 @@ var ADC_direct_page = {
if(cpu.p.e||cpu.p.m) {
ADC_const.execute(cpu, [cpu.mmu.read_byte(memory_location)]);
} else {
var low_byte = cpu.mmu.read_byte(memory_location);
var high_byte = cpu.mmu.read_byte(memory_location+1);
var low_byte = cpu.mmu.read_byte(memory_location),
high_byte = cpu.mmu.read_byte(memory_location+1);
ADC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -4352,15 +4345,15 @@ var ADC_direct_page_indirect = {
else
cpu.cycle_count+=3;
var memory_location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var absolute_location = (high_byte_loc<<8) | low_byte_loc;
var memory_location = bytes[0] + cpu.r.d,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
absolute_location = (high_byte_loc<<8) | low_byte_loc;
if(cpu.p.e||cpu.p.m) {
ADC_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
var low_byte = cpu.mmu.read_byte(absolute_location);
var high_byte = cpu.mmu.read_byte(absolute_location+1);
var low_byte = cpu.mmu.read_byte(absolute_location),
high_byte = cpu.mmu.read_byte(absolute_location+1);
ADC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -4377,25 +4370,25 @@ var ADC_direct_page_indexed_x_indirect = {
cpu.cycle_count+=4;
if(cpu.p.e) {
var memory_location = (bytes[0] + cpu.r.x) & 0xff;
var low_byte_loc = cpu.mmu.read_byte_long(memory_location+cpu.r.d, 0);
var high_byte_read_loc = ((memory_location+1)&0xff)+cpu.r.d;
var high_byte_loc = cpu.mmu.read_byte_long(high_byte_read_loc, 0);
var memory_location = (bytes[0] + cpu.r.x) & 0xff,
low_byte_loc = cpu.mmu.read_byte_long(memory_location+cpu.r.d, 0),
high_byte_read_loc = ((memory_location+1)&0xff)+cpu.r.d,
high_byte_loc = cpu.mmu.read_byte_long(high_byte_read_loc, 0);
ADC_const.execute(cpu, [cpu.mmu.read_byte((high_byte_loc<<8) |
low_byte_loc)]);
} else if(cpu.p.m) {
var memory_location = bytes[0] + cpu.r.d + cpu.r.x;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var memory_location = bytes[0] + cpu.r.d + cpu.r.x,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1);
ADC_const.execute(cpu, [cpu.mmu.read_byte((high_byte_loc<<8) |
low_byte_loc)]);
} else {
var memory_location = bytes[0] + cpu.r.d + cpu.r.x;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var absolute_location = (high_byte_loc<<8) | low_byte_loc;
var low_byte = cpu.mmu.read_byte(absolute_location);
var high_byte;
var memory_location = bytes[0] + cpu.r.d + cpu.r.x,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
absolute_location = (high_byte_loc<<8) | low_byte_loc,
low_byte = cpu.mmu.read_byte(absolute_location),
high_byte;
absolute_location++;
if(absolute_location&0x10000) {
high_byte = cpu.mmu.read_byte_long(absolute_location, cpu.r.dbr+1);
@ -4417,14 +4410,13 @@ var ADC_direct_page_indirect_long_indexed_y = {
else
cpu.cycle_count+=4;
var memory_location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var bank_byte = cpu.mmu.read_byte(memory_location+2);
var absolute_location = ((high_byte_loc<<8) | low_byte_loc) + cpu.r.y;
var memory_location = bytes[0] + cpu.r.d,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
bank_byte = cpu.mmu.read_byte(memory_location+2),
absolute_location = ((high_byte_loc<<8) | low_byte_loc) + cpu.r.y;
if(absolute_location >> 16) {
absolute_location &= 0xffff;
bank_byte++;
}
if(cpu.p.e||cpu.p.m) {
@ -4453,17 +4445,17 @@ var ADC_direct_page_indirect_long = {
else
cpu.cycle_count+=4;
var memory_location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var bank_byte = cpu.mmu.read_byte(memory_location+2);
var absolute_location = (high_byte_loc<<8) | low_byte_loc;
var memory_location = bytes[0] + cpu.r.d,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
bank_byte = cpu.mmu.read_byte(memory_location+2),
absolute_location = (high_byte_loc<<8) | low_byte_loc;
if(cpu.p.e||cpu.p.m) {
ADC_const.execute(cpu, [cpu.mmu.read_byte_long(absolute_location,
bank_byte)]);
} else {
var low_byte = cpu.mmu.read_byte_long(absolute_location, bank_byte);
var high_byte = cpu.mmu.read_byte_long(absolute_location+1, bank_byte);
var low_byte = cpu.mmu.read_byte_long(absolute_location, bank_byte),
high_byte = cpu.mmu.read_byte_long(absolute_location+1, bank_byte);
ADC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -4479,11 +4471,11 @@ var ADC_direct_page_indirect_indexed_y = {
else
cpu.cycle_count+=3;
var memory_location = bytes[0] + cpu.r.d;
var low_byte_loc = cpu.mmu.read_byte(memory_location);
var high_byte_loc = cpu.mmu.read_byte(memory_location+1);
var initial_absolute_location = (high_byte_loc<<8) | low_byte_loc;
var absolute_location = initial_absolute_location + cpu.r.y;
var memory_location = bytes[0] + cpu.r.d,
low_byte_loc = cpu.mmu.read_byte(memory_location),
high_byte_loc = cpu.mmu.read_byte(memory_location+1),
initial_absolute_location = (high_byte_loc<<8) | low_byte_loc,
absolute_location = initial_absolute_location + cpu.r.y;
// Add 1 cycle if page boundary crossed
if((initial_absolute_location&0xff00)!==(absolute_location&0xff00))
@ -4492,8 +4484,8 @@ var ADC_direct_page_indirect_indexed_y = {
if(cpu.p.e||cpu.p.m) {
ADC_const.execute(cpu, [cpu.mmu.read_byte(absolute_location)]);
} else {
var low_byte = cpu.mmu.read_byte(absolute_location);
var high_byte = cpu.mmu.read_byte(absolute_location+1);
var low_byte = cpu.mmu.read_byte(absolute_location),
high_byte = cpu.mmu.read_byte(absolute_location+1);
ADC_const.execute(cpu, [low_byte, high_byte]);
}
}
@ -4504,18 +4496,16 @@ var ADC_absolute_indexed_x = {
return 3;
},
execute:function(cpu, bytes) {
var initial_location = (bytes[1]<<8)|bytes[0];
var memory_location = initial_location+cpu.r.x;
cpu.cycle_count+=2;
var initial_location = (bytes[1]<<8)|bytes[0],
memory_location = initial_location+cpu.r.x;
// Add 1 cycle if page boundary crossed
if((memory_location&0xff00)!==(initial_location&0xff00))
cpu.cycle_count+=3;
else
cpu.cycle_count+=2;
cpu.cycle_count++;
var location_high_byte = memory_location >> 8;
var location_low_byte = memory_location & 0x00ff;
ADC_absolute.execute(cpu, [location_low_byte, location_high_byte]);
ADC_absolute.execute(cpu, [memory_location&0x00ff, memory_location>>8]);
}
};
@ -4579,9 +4569,9 @@ var ADC_stack_relative_indirect_indexed_y = {
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);
var high_byte;
var location_loc = 0x100 | ((cpu.r.s + bytes[0]) & 0xff),
low_byte = cpu.mmu.read_byte(location_loc),
high_byte;
if(location_loc===0x1ff) {
high_byte = cpu.mmu.read_byte(0x100);
} else {
@ -4887,9 +4877,9 @@ var JMP_absolute_indirect = {
execute:function(cpu, bytes) {
cpu.cycle_count+=5;
var memory_location = (bytes[1]<<8)|bytes[0];
var low_byte = cpu.mmu.read_byte(memory_location);
var high_byte = cpu.mmu.read_byte(memory_location+1);
var memory_location = (bytes[1]<<8)|bytes[0],
low_byte = cpu.mmu.read_byte(memory_location),
high_byte = cpu.mmu.read_byte(memory_location+1);
cpu.r.pc = (high_byte<<8) | low_byte;
}
};
@ -4913,9 +4903,9 @@ var JMP_absolute_indirect_long = {
execute:function(cpu, bytes) {
cpu.cycle_count+=6;
var memory_location = (bytes[1]<<8)|bytes[0];
var low_byte = cpu.mmu.read_byte(memory_location);
var high_byte = cpu.mmu.read_byte(memory_location+1);
var memory_location = (bytes[1]<<8)|bytes[0],
low_byte = cpu.mmu.read_byte(memory_location),
high_byte = cpu.mmu.read_byte(memory_location+1);
cpu.r.pc = (high_byte<<8) | low_byte;
cpu.r.k = cpu.mmu.read_byte(memory_location+2);
}
@ -4928,17 +4918,17 @@ var JMP_absolute_indexed_x_indirect = {
execute:function(cpu, bytes) {
cpu.cycle_count+=6;
var memory_location = ((bytes[1]<<8)|bytes[0])+cpu.r.x;
var bank = cpu.r.k;
var memory_location = ((bytes[1]<<8)|bytes[0])+cpu.r.x,
bank = cpu.r.k;
if(memory_location&0x10000) {
bank++;
}
memory_location &= 0xffff;
var indirect_location_low_byte = cpu.mmu.read_byte_long(memory_location, bank);
var indirect_location_high_byte = cpu.mmu.read_byte_long(memory_location+1, bank);
var indirect_location = (indirect_location_high_byte<<8) |
indirect_location_low_byte;
var low_byte = cpu.mmu.read_byte(indirect_location);
var indirect_location_low_byte = cpu.mmu.read_byte_long(memory_location, bank),
indirect_location_high_byte = cpu.mmu.read_byte_long(memory_location+1, bank),
indirect_location = (indirect_location_high_byte<<8) |
indirect_location_low_byte,
low_byte = cpu.mmu.read_byte(indirect_location);
bank = cpu.r.k;
if(indirect_location===0xffff) {
indirect_location = 0;