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Merge branch 'master' of github.com:mre/mos6502 into no-std-base

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This commit is contained in:
Matthias Endler 2018-11-04 20:32:30 +01:00
commit 8360aa4518
1 changed files with 8 additions and 9 deletions
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17
src/cpu.rs
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@ -108,17 +108,17 @@ impl CPU {
} }
(Instruction::BCC, OpInput::UseRelative(rel)) => { (Instruction::BCC, OpInput::UseRelative(rel)) => {
let addr = self.registers.program_counter + AddressDiff(rel as i32); let addr = self.registers.program_counter + AddressDiff(i32::from(rel));
self.branch_if_carry_clear(addr); self.branch_if_carry_clear(addr);
} }
(Instruction::BCS, OpInput::UseRelative(rel)) => { (Instruction::BCS, OpInput::UseRelative(rel)) => {
let addr = self.registers.program_counter + AddressDiff(rel as i32); let addr = self.registers.program_counter + AddressDiff(i32::from(rel));
self.branch_if_carry_set(addr); self.branch_if_carry_set(addr);
} }
(Instruction::BEQ, OpInput::UseRelative(rel)) => { (Instruction::BEQ, OpInput::UseRelative(rel)) => {
let addr = self.registers.program_counter + AddressDiff(rel as i32); let addr = self.registers.program_counter + AddressDiff(i32::from(rel));
self.branch_if_equal(addr); self.branch_if_equal(addr);
} }
@ -148,23 +148,23 @@ impl CPU {
} }
(Instruction::BMI, OpInput::UseRelative(rel)) => { (Instruction::BMI, OpInput::UseRelative(rel)) => {
let addr = self.registers.program_counter + AddressDiff(rel as i32); let addr = self.registers.program_counter + AddressDiff(i32::from(rel));
debug!("branch if minus relative. address: {:?}", addr); debug!("branch if minus relative. address: {:?}", addr);
self.branch_if_minus(addr); self.branch_if_minus(addr);
} }
(Instruction::BPL, OpInput::UseRelative(rel)) => { (Instruction::BPL, OpInput::UseRelative(rel)) => {
let addr = self.registers.program_counter + AddressDiff(rel as i32); let addr = self.registers.program_counter + AddressDiff(i32::from(rel));
self.branch_if_positive(addr); self.branch_if_positive(addr);
} }
(Instruction::BVC, OpInput::UseRelative(rel)) => { (Instruction::BVC, OpInput::UseRelative(rel)) => {
let addr = self.registers.program_counter + AddressDiff(rel as i32); let addr = self.registers.program_counter + AddressDiff(i32::from(rel));
self.branch_if_overflow_clear(addr); self.branch_if_overflow_clear(addr);
} }
(Instruction::BVS, OpInput::UseRelative(rel)) => { (Instruction::BVS, OpInput::UseRelative(rel)) => {
let addr = self.registers.program_counter + AddressDiff(rel as i32); let addr = self.registers.program_counter + AddressDiff(i32::from(rel));
self.branch_if_overflow_set(addr); self.branch_if_overflow_set(addr);
} }
@ -446,7 +446,7 @@ impl CPU {
fn shift_right_with_flags(p_val: &mut u8, status: &mut Status) { fn shift_right_with_flags(p_val: &mut u8, status: &mut Status) {
let mask = 1; let mask = 1;
let is_bit_0_set = (*p_val & mask) == mask; let is_bit_0_set = (*p_val & mask) == mask;
*p_val = *p_val >> 1; *p_val >>= 1;
status.set_with_mask( status.set_with_mask(
PS_CARRY, PS_CARRY,
Status::new(StatusArgs { Status::new(StatusArgs {
@ -1288,4 +1288,3 @@ mod tests {
} }
} }
} }