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65816.js
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move zero checking from end of each if block to end of function

This commit is contained in:
Preston Skupinski 2012-01-01 23:53:31 -05:00
parent e1f827b446
commit 0539c5c5ff
1 changed files with 4 additions and 12 deletions
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16
cpu.js
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@ -3308,15 +3308,13 @@ var INC_absolute = {
temp = (cpu.mmu.read_byte(memory_location) + 1) & 0xff;
cpu.p.n = temp >> 7;
cpu.mmu.store_byte(memory_location, temp);
cpu_lib.r.p.check_z(cpu, temp);
} else {
cpu.cycle_count+=2;
temp = cpu.mmu.read_word(memory_location) + 1;
cpu.p.n = temp >> 15;
cpu.mmu.store_word(memory_location, temp);
cpu_lib.r.p.check_z(cpu, temp);
}
cpu_lib.r.p.check_z(cpu, temp);
}
};
@ -3333,15 +3331,13 @@ var INC_absolute_indexed_x = {
temp = (cpu.mmu.read_byte(memory_location) + 1) & 0xff;
cpu.p.n = temp >> 7;
cpu.mmu.store_byte(memory_location, temp);
cpu_lib.r.p.check_z(cpu, temp);
} else {
cpu.cycle_count+=2;
temp = cpu.mmu.read_word(memory_location) + 1;
cpu.p.n = temp >> 15;
cpu.mmu.store_word(memory_location, temp);
cpu_lib.r.p.check_z(cpu, temp);
}
cpu_lib.r.p.check_z(cpu, temp);
}
};
@ -3361,15 +3357,13 @@ var INC_direct_page = {
temp = (cpu.mmu.read_byte(memory_location) + 1) & 0xff;
cpu.mmu.store_byte(memory_location, temp);
cpu.p.n = temp >> 7;
cpu_lib.r.p.check_z(cpu, temp);
} else {
cpu.cycle_count+=2;
temp = cpu.mmu.read_word(memory_location) + 1;
cpu.p.n = temp >> 15;
cpu.mmu.store_word(memory_location, temp);
cpu_lib.r.p.check_z(cpu, temp);
}
cpu_lib.r.p.check_z(cpu, temp);
}
};
@ -3389,15 +3383,13 @@ var INC_direct_page_indexed_x = {
temp = (cpu.mmu.read_byte(memory_location) + 1) & 0xff;
cpu.mmu.store_byte(memory_location, temp);
cpu.p.n = temp >> 7;
cpu_lib.r.p.check_z(cpu, temp);
} else {
cpu.cycle_count+=2;
temp = cpu.mmu.read_word(memory_location) + 1;
cpu.p.n = temp >> 15;
cpu.mmu.store_word(memory_location, temp);
cpu_lib.r.p.check_z(cpu, temp);
}
cpu_lib.r.p.check_z(cpu, temp);
}
};