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Add branch_if_equal().

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This commit is contained in:
Andrew Keeton 2014-11-06 19:49:54 -05:00
parent c9ed9e1720
commit 8febc74788
1 changed files with 6 additions and 0 deletions
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6
src/machine.rs
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@ -565,6 +565,12 @@ impl Machine {
} }
} }
fn branch_if_equal(&mut self, addr: Address) {
if self.registers.status.contains(PS_ZERO) {
self.registers.program_counter = addr;
}
}
fn branch_if_minus(&mut self, addr: Address) { fn branch_if_minus(&mut self, addr: Address) {
if self.registers.status.contains(PS_NEGATIVE) { if self.registers.status.contains(PS_NEGATIVE) {
self.registers.program_counter = addr; self.registers.program_counter = addr;