6502/mre-mos6502
1
0
Fork 0
mirror of https://github.com/mre/mos6502.git synced 2024-11-28 07:49:19 +00:00
Code Issues Projects Releases Wiki Activity

Add branch_if_positive().

Browse Source
This commit is contained in:
Andrew Keeton 2014-11-06 20:02:40 -05:00
parent eb27595cd5
commit f3160e1bcc
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/machine.rs
View File

@ -583,6 +583,12 @@ impl Machine {
}
}
fn branch_if_positive(&mut self, addr: Address) {
if !self.registers.status.contains(PS_NEGATIVE) {
self.registers.program_counter = addr;
}
}
fn push_on_stack(&mut self, val: u8) {
let addr = self.registers.stack_pointer.to_address();
self.memory.set_byte(addr, val);