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Merge pull request #7 from whitemalt/master

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remove warning
This commit is contained in:
Matthias Endler 2018-10-27 14:56:35 +02:00 committed by GitHub
commit 1301218e37
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 320 additions and 319 deletions
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1
src/bin/mos6502.rs
View File

@ -39,6 +39,7 @@ fn main() {
// "Load" a program
let zero_page_data = [
// ZeroPage data start
0x00,

638
src/cpu.rs
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@ -773,385 +773,385 @@ mod tests {
#[test]
fn add_with_carry_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.add_with_carry(1);
assert_eq!(CPU.registers.accumulator, 1);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.add_with_carry(1);
assert_eq!(cpu.registers.accumulator, 1);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.add_with_carry(-1);
assert_eq!(CPU.registers.accumulator, 0);
assert_eq!(CPU.registers.status.contains(PS_CARRY), true);
assert_eq!(CPU.registers.status.contains(PS_ZERO), true);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.add_with_carry(-1);
assert_eq!(cpu.registers.accumulator, 0);
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.add_with_carry(1);
assert_eq!(CPU.registers.accumulator, 2);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.add_with_carry(1);
assert_eq!(cpu.registers.accumulator, 2);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.add_with_carry(127);
assert_eq!(CPU.registers.accumulator, 127);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.add_with_carry(127);
assert_eq!(cpu.registers.accumulator, 127);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.add_with_carry(-127);
assert_eq!(CPU.registers.accumulator, 0);
assert_eq!(CPU.registers.status.contains(PS_CARRY), true);
assert_eq!(CPU.registers.status.contains(PS_ZERO), true);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.add_with_carry(-127);
assert_eq!(cpu.registers.accumulator, 0);
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.registers.status.remove(PS_CARRY);
CPU.add_with_carry(-128);
assert_eq!(CPU.registers.accumulator, -128);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.registers.status.remove(PS_CARRY);
cpu.add_with_carry(-128);
assert_eq!(cpu.registers.accumulator, -128);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.add_with_carry(127);
assert_eq!(CPU.registers.accumulator, -1);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.add_with_carry(127);
assert_eq!(cpu.registers.accumulator, -1);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.add_with_carry(127);
assert_eq!(CPU.registers.accumulator, 127);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.add_with_carry(127);
assert_eq!(cpu.registers.accumulator, 127);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.add_with_carry(1);
assert_eq!(CPU.registers.accumulator, -128);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), true);
cpu.add_with_carry(1);
assert_eq!(cpu.registers.accumulator, -128);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
}
#[test]
fn and_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.registers.accumulator = 0;
CPU.and(-1);
assert_eq!(CPU.registers.accumulator, 0);
assert_eq!(CPU.registers.status.contains(PS_ZERO), true);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
cpu.registers.accumulator = 0;
cpu.and(-1);
assert_eq!(cpu.registers.accumulator, 0);
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
CPU.registers.accumulator = -1;
CPU.and(0);
assert_eq!(CPU.registers.accumulator, 0);
assert_eq!(CPU.registers.status.contains(PS_ZERO), true);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
cpu.registers.accumulator = -1;
cpu.and(0);
assert_eq!(cpu.registers.accumulator, 0);
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
CPU.registers.accumulator = -1;
CPU.and(0x0f);
assert_eq!(CPU.registers.accumulator, 0x0f);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
cpu.registers.accumulator = -1;
cpu.and(0x0f);
assert_eq!(cpu.registers.accumulator, 0x0f);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
CPU.registers.accumulator = -1;
CPU.and(-128);
assert_eq!(CPU.registers.accumulator, -128);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
cpu.registers.accumulator = -1;
cpu.and(-128);
assert_eq!(cpu.registers.accumulator, -128);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
}
#[test]
fn subtract_with_carry_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.execute_instruction((Instruction::SEC, OpInput::UseImplied));
CPU.registers.accumulator = 0;
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
cpu.registers.accumulator = 0;
CPU.subtract_with_carry(1);
assert_eq!(CPU.registers.accumulator, -1);
assert_eq!(CPU.registers.status.contains(PS_CARRY), true);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.subtract_with_carry(1);
assert_eq!(cpu.registers.accumulator, -1);
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.execute_instruction((Instruction::SEC, OpInput::UseImplied));
CPU.registers.accumulator = -128;
CPU.subtract_with_carry(1);
assert_eq!(CPU.registers.accumulator, 127);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), true);
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
cpu.registers.accumulator = -128;
cpu.subtract_with_carry(1);
assert_eq!(cpu.registers.accumulator, 127);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
CPU.execute_instruction((Instruction::SEC, OpInput::UseImplied));
CPU.registers.accumulator = 127;
CPU.subtract_with_carry(-1);
assert_eq!(CPU.registers.accumulator, -128);
assert_eq!(CPU.registers.status.contains(PS_CARRY), true);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), true);
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
cpu.registers.accumulator = 127;
cpu.subtract_with_carry(-1);
assert_eq!(cpu.registers.accumulator, -128);
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
CPU.execute_instruction((Instruction::CLC, OpInput::UseImplied));
CPU.registers.accumulator = -64;
CPU.subtract_with_carry(64);
assert_eq!(CPU.registers.accumulator, 127);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), true);
cpu.execute_instruction((Instruction::CLC, OpInput::UseImplied));
cpu.registers.accumulator = -64;
cpu.subtract_with_carry(64);
assert_eq!(cpu.registers.accumulator, 127);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
CPU.execute_instruction((Instruction::SEC, OpInput::UseImplied));
CPU.registers.accumulator = 0;
CPU.subtract_with_carry(-128);
assert_eq!(CPU.registers.accumulator, -128);
assert_eq!(CPU.registers.status.contains(PS_CARRY), true);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), true);
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
cpu.registers.accumulator = 0;
cpu.subtract_with_carry(-128);
assert_eq!(cpu.registers.accumulator, -128);
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), true);
CPU.execute_instruction((Instruction::CLC, OpInput::UseImplied));
CPU.registers.accumulator = 0;
CPU.subtract_with_carry(127);
assert_eq!(CPU.registers.accumulator, -128);
assert_eq!(CPU.registers.status.contains(PS_CARRY), true);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.execute_instruction((Instruction::CLC, OpInput::UseImplied));
cpu.registers.accumulator = 0;
cpu.subtract_with_carry(127);
assert_eq!(cpu.registers.accumulator, -128);
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
}
#[test]
fn decrement_memory_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
let addr = Address(0xA1B2);
CPU.memory.set_byte(addr, 5);
cpu.memory.set_byte(addr, 5);
CPU.decrement_memory(addr);
assert_eq!(CPU.memory.get_byte(addr), 4);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
cpu.decrement_memory(addr);
assert_eq!(cpu.memory.get_byte(addr), 4);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
CPU.decrement_memory(addr);
assert_eq!(CPU.memory.get_byte(addr), 3);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
cpu.decrement_memory(addr);
assert_eq!(cpu.memory.get_byte(addr), 3);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
CPU.decrement_memory(addr);
CPU.decrement_memory(addr);
CPU.decrement_memory(addr);
assert_eq!(CPU.memory.get_byte(addr), 0);
assert_eq!(CPU.registers.status.contains(PS_ZERO), true);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
cpu.decrement_memory(addr);
cpu.decrement_memory(addr);
cpu.decrement_memory(addr);
assert_eq!(cpu.memory.get_byte(addr), 0);
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
CPU.decrement_memory(addr);
assert_eq!(CPU.memory.get_byte(addr) as i8, -1);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
cpu.decrement_memory(addr);
assert_eq!(cpu.memory.get_byte(addr) as i8, -1);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
}
#[test]
fn logical_shift_right_test() {
// Testing UseImplied version (which targets the accumulator) only, for now
let mut CPU = CPU::new();
CPU.execute_instruction((Instruction::LDA, OpInput::UseImmediate(0)));
CPU.execute_instruction((Instruction::LSR, OpInput::UseImplied));
assert_eq!(CPU.registers.accumulator, 0);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), true);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
let mut cpu = CPU::new();
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(0)));
cpu.execute_instruction((Instruction::LSR, OpInput::UseImplied));
assert_eq!(cpu.registers.accumulator, 0);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.execute_instruction((Instruction::LDA, OpInput::UseImmediate(1)));
CPU.execute_instruction((Instruction::LSR, OpInput::UseImplied));
assert_eq!(CPU.registers.accumulator, 0);
assert_eq!(CPU.registers.status.contains(PS_CARRY), true);
assert_eq!(CPU.registers.status.contains(PS_ZERO), true);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(1)));
cpu.execute_instruction((Instruction::LSR, OpInput::UseImplied));
assert_eq!(cpu.registers.accumulator, 0);
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.execute_instruction((Instruction::LDA, OpInput::UseImmediate(255)));
CPU.execute_instruction((Instruction::LSR, OpInput::UseImplied));
assert_eq!(CPU.registers.accumulator, 0x7F);
assert_eq!(CPU.registers.status.contains(PS_CARRY), true);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(255)));
cpu.execute_instruction((Instruction::LSR, OpInput::UseImplied));
assert_eq!(cpu.registers.accumulator, 0x7F);
assert_eq!(cpu.registers.status.contains(PS_CARRY), true);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.execute_instruction((Instruction::LDA, OpInput::UseImmediate(254)));
CPU.execute_instruction((Instruction::LSR, OpInput::UseImplied));
assert_eq!(CPU.registers.accumulator, 0x7F);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(254)));
cpu.execute_instruction((Instruction::LSR, OpInput::UseImplied));
assert_eq!(cpu.registers.accumulator, 0x7F);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
}
#[test]
fn dec_x_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.dec_x();
assert_eq!(CPU.registers.index_x, -1);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.dec_x();
assert_eq!(cpu.registers.index_x, -1);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.dec_x();
assert_eq!(CPU.registers.index_x, -2);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.dec_x();
assert_eq!(cpu.registers.index_x, -2);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.load_x_register(5);
CPU.dec_x();
assert_eq!(CPU.registers.index_x, 4);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.load_x_register(5);
cpu.dec_x();
assert_eq!(cpu.registers.index_x, 4);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.dec_x();
CPU.dec_x();
CPU.dec_x();
CPU.dec_x();
cpu.dec_x();
cpu.dec_x();
cpu.dec_x();
cpu.dec_x();
assert_eq!(CPU.registers.index_x, 0);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), true);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
assert_eq!(cpu.registers.index_x, 0);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), true);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), false);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
CPU.dec_x();
assert_eq!(CPU.registers.index_x, -1);
assert_eq!(CPU.registers.status.contains(PS_CARRY), false);
assert_eq!(CPU.registers.status.contains(PS_ZERO), false);
assert_eq!(CPU.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(CPU.registers.status.contains(PS_OVERFLOW), false);
cpu.dec_x();
assert_eq!(cpu.registers.index_x, -1);
assert_eq!(cpu.registers.status.contains(PS_CARRY), false);
assert_eq!(cpu.registers.status.contains(PS_ZERO), false);
assert_eq!(cpu.registers.status.contains(PS_NEGATIVE), true);
assert_eq!(cpu.registers.status.contains(PS_OVERFLOW), false);
}
#[test]
fn jump_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
let addr = Address(0xA1B1);
CPU.jump(addr);
assert_eq!(CPU.registers.program_counter, addr);
cpu.jump(addr);
assert_eq!(cpu.registers.program_counter, addr);
}
#[test]
fn branch_if_carry_clear_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.execute_instruction((Instruction::SEC, OpInput::UseImplied));
CPU.branch_if_carry_clear(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0));
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
cpu.branch_if_carry_clear(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0));
CPU.execute_instruction((Instruction::CLC, OpInput::UseImplied));
CPU.branch_if_carry_clear(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0xABCD));
cpu.execute_instruction((Instruction::CLC, OpInput::UseImplied));
cpu.branch_if_carry_clear(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
}
#[test]
fn branch_if_carry_set_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.execute_instruction((Instruction::CLC, OpInput::UseImplied));
CPU.branch_if_carry_set(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0));
cpu.execute_instruction((Instruction::CLC, OpInput::UseImplied));
cpu.branch_if_carry_set(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0));
CPU.execute_instruction((Instruction::SEC, OpInput::UseImplied));
CPU.branch_if_carry_set(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0xABCD));
cpu.execute_instruction((Instruction::SEC, OpInput::UseImplied));
cpu.branch_if_carry_set(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
}
#[test]
fn branch_if_equal_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.branch_if_equal(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0));
cpu.branch_if_equal(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0));
CPU.registers.status.or(PS_ZERO);
CPU.branch_if_equal(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0xABCD));
cpu.registers.status.or(PS_ZERO);
cpu.branch_if_equal(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
}
#[test]
fn branch_if_minus_test() {
{
let mut CPU = CPU::new();
let registers_before = CPU.registers;
let mut cpu = CPU::new();
let registers_before = cpu.registers;
CPU.branch_if_minus(Address(0xABCD));
assert_eq!(CPU.registers, registers_before);
assert_eq!(CPU.registers.program_counter, Address(0));
cpu.branch_if_minus(Address(0xABCD));
assert_eq!(cpu.registers, registers_before);
assert_eq!(cpu.registers.program_counter, Address(0));
}
{
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.registers.status.or(PS_NEGATIVE);
let registers_before = CPU.registers;
cpu.registers.status.or(PS_NEGATIVE);
let registers_before = cpu.registers;
CPU.branch_if_minus(Address(0xABCD));
assert_eq!(CPU.registers.status, registers_before.status);
assert_eq!(CPU.registers.program_counter, Address(0xABCD));
cpu.branch_if_minus(Address(0xABCD));
assert_eq!(cpu.registers.status, registers_before.status);
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
}
}
#[test]
fn branch_if_positive_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.registers.status.insert(PS_NEGATIVE);
CPU.branch_if_positive(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0));
cpu.registers.status.insert(PS_NEGATIVE);
cpu.branch_if_positive(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0));
CPU.registers.status.remove(PS_NEGATIVE);
CPU.branch_if_positive(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0xABCD));
cpu.registers.status.remove(PS_NEGATIVE);
cpu.branch_if_positive(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
}
#[test]
fn branch_if_overflow_clear_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.registers.status.insert(PS_OVERFLOW);
CPU.branch_if_overflow_clear(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0));
cpu.registers.status.insert(PS_OVERFLOW);
cpu.branch_if_overflow_clear(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0));
CPU.registers.status.remove(PS_OVERFLOW);
CPU.branch_if_overflow_clear(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0xABCD));
cpu.registers.status.remove(PS_OVERFLOW);
cpu.branch_if_overflow_clear(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
}
#[test]
fn branch_if_overflow_set_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.branch_if_overflow_set(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0));
cpu.branch_if_overflow_set(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0));
CPU.registers.status.insert(PS_OVERFLOW);
CPU.branch_if_overflow_set(Address(0xABCD));
assert_eq!(CPU.registers.program_counter, Address(0xABCD));
cpu.registers.status.insert(PS_OVERFLOW);
cpu.branch_if_overflow_set(Address(0xABCD));
assert_eq!(cpu.registers.program_counter, Address(0xABCD));
}
#[cfg(test)]
@ -1159,61 +1159,61 @@ mod tests {
where
F: FnMut(&mut CPU, u8),
{
let mut CPU = CPU::new();
let mut cpu = CPU::new();
CPU.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
compare(&mut CPU, 127);
assert!(CPU.registers.status.contains(PS_ZERO));
assert!(CPU.registers.status.contains(PS_CARRY));
assert!(!CPU.registers.status.contains(PS_NEGATIVE));
compare(&mut cpu, 127);
assert!(cpu.registers.status.contains(PS_ZERO));
assert!(cpu.registers.status.contains(PS_CARRY));
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
CPU.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
compare(&mut CPU, 1);
assert!(!CPU.registers.status.contains(PS_ZERO));
assert!(CPU.registers.status.contains(PS_CARRY));
assert!(!CPU.registers.status.contains(PS_NEGATIVE));
compare(&mut cpu, 1);
assert!(!cpu.registers.status.contains(PS_ZERO));
assert!(cpu.registers.status.contains(PS_CARRY));
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
CPU.execute_instruction((load_instruction, OpInput::UseImmediate(1)));
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(1)));
compare(&mut CPU, 2);
assert!(!CPU.registers.status.contains(PS_ZERO));
assert!(!CPU.registers.status.contains(PS_CARRY));
assert!(CPU.registers.status.contains(PS_NEGATIVE));
compare(&mut cpu, 2);
assert!(!cpu.registers.status.contains(PS_ZERO));
assert!(!cpu.registers.status.contains(PS_CARRY));
assert!(cpu.registers.status.contains(PS_NEGATIVE));
CPU.execute_instruction((load_instruction, OpInput::UseImmediate(20)));
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(20)));
compare(&mut CPU, -50i8 as u8);
assert!(!CPU.registers.status.contains(PS_ZERO));
assert!(!CPU.registers.status.contains(PS_CARRY));
assert!(!CPU.registers.status.contains(PS_NEGATIVE));
compare(&mut cpu, -50i8 as u8);
assert!(!cpu.registers.status.contains(PS_ZERO));
assert!(!cpu.registers.status.contains(PS_CARRY));
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
CPU.execute_instruction((load_instruction, OpInput::UseImmediate(1)));
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(1)));
compare(&mut CPU, -1i8 as u8);
assert!(!CPU.registers.status.contains(PS_ZERO));
assert!(!CPU.registers.status.contains(PS_CARRY));
assert!(!CPU.registers.status.contains(PS_NEGATIVE));
compare(&mut cpu, -1i8 as u8);
assert!(!cpu.registers.status.contains(PS_ZERO));
assert!(!cpu.registers.status.contains(PS_CARRY));
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
CPU.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
cpu.execute_instruction((load_instruction, OpInput::UseImmediate(127)));
compare(&mut CPU, -128i8 as u8);
assert!(!CPU.registers.status.contains(PS_ZERO));
assert!(!CPU.registers.status.contains(PS_CARRY));
assert!(CPU.registers.status.contains(PS_NEGATIVE));
compare(&mut cpu, -128i8 as u8);
assert!(!cpu.registers.status.contains(PS_ZERO));
assert!(!cpu.registers.status.contains(PS_CARRY));
assert!(cpu.registers.status.contains(PS_NEGATIVE));
}
#[test]
fn compare_with_a_register_test() {
compare_test_helper(
&mut |CPU: &mut CPU, val: u8| {
CPU.compare_with_a_register(val);
&mut |cpu: &mut CPU, val: u8| {
cpu.compare_with_a_register(val);
},
Instruction::LDA,
);
@ -1222,8 +1222,8 @@ mod tests {
#[test]
fn compare_with_x_register_test() {
compare_test_helper(
&mut |CPU: &mut CPU, val: u8| {
CPU.compare_with_x_register(val);
&mut |cpu: &mut CPU, val: u8| {
cpu.compare_with_x_register(val);
},
Instruction::LDX,
);
@ -1232,8 +1232,8 @@ mod tests {
#[test]
fn compare_with_y_register_test() {
compare_test_helper(
&mut |CPU: &mut CPU, val: u8| {
CPU.compare_with_y_register(val);
&mut |cpu: &mut CPU, val: u8| {
cpu.compare_with_y_register(val);
},
Instruction::LDY,
);
@ -1241,27 +1241,27 @@ mod tests {
#[test]
fn exclusive_or_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
for a_before in range_inclusive(0u8, 255u8) {
for val in range_inclusive(0u8, 255u8) {
CPU.execute_instruction((Instruction::LDA, OpInput::UseImmediate(a_before)));
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(a_before)));
CPU.exclusive_or(val);
cpu.exclusive_or(val);
let a_after = a_before ^ val;
assert_eq!(CPU.registers.accumulator, a_after as i8);
assert_eq!(cpu.registers.accumulator, a_after as i8);
if a_after == 0 {
assert!(CPU.registers.status.contains(PS_ZERO));
assert!(cpu.registers.status.contains(PS_ZERO));
} else {
assert!(!CPU.registers.status.contains(PS_ZERO));
assert!(!cpu.registers.status.contains(PS_ZERO));
}
if (a_after as i8) < 0 {
assert!(CPU.registers.status.contains(PS_NEGATIVE));
assert!(cpu.registers.status.contains(PS_NEGATIVE));
} else {
assert!(!CPU.registers.status.contains(PS_NEGATIVE));
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
}
}
}
@ -1269,27 +1269,27 @@ mod tests {
#[test]
fn inclusive_or_test() {
let mut CPU = CPU::new();
let mut cpu = CPU::new();
for a_before in range_inclusive(0u8, 255u8) {
for val in range_inclusive(0u8, 255u8) {
CPU.execute_instruction((Instruction::LDA, OpInput::UseImmediate(a_before)));
cpu.execute_instruction((Instruction::LDA, OpInput::UseImmediate(a_before)));
CPU.inclusive_or(val);
cpu.inclusive_or(val);
let a_after = a_before | val;
assert_eq!(CPU.registers.accumulator, a_after as i8);
assert_eq!(cpu.registers.accumulator, a_after as i8);
if a_after == 0 {
assert!(CPU.registers.status.contains(PS_ZERO));
assert!(cpu.registers.status.contains(PS_ZERO));
} else {
assert!(!CPU.registers.status.contains(PS_ZERO));
assert!(!cpu.registers.status.contains(PS_ZERO));
}
if (a_after as i8) < 0 {
assert!(CPU.registers.status.contains(PS_NEGATIVE));
assert!(cpu.registers.status.contains(PS_NEGATIVE));
} else {
assert!(!CPU.registers.status.contains(PS_NEGATIVE));
assert!(!cpu.registers.status.contains(PS_NEGATIVE));
}
}
}