private byte rotate(int rotateCount_) {
for (int i = 0; i < rotateCount_; i++) {
_c.LDA(_c.ROL(_c.getA()));
}
return _c.getA();
}
@Test
public void testRotateLeftOnceNoCarry() {
// before
_c.LDA((byte) 0b0101_0101);
byte result = _c.ROL(_c.getA());
// after
assertEquals((byte) 0b1010_1010, result);
assertTrue(_c.getNegativeFlag());
assertTrue(!_c.getCarryFlag());
assertTrue(!_c.getZeroFlag());
}
@Test
public void testRotateLeftOnceCarry() {
// before
_c.LDA((byte) 0b1101_0100);
byte result = _c.ROL(_c.getA());
// 0xA9 = 1010 1001
System.out.println(HexUtils.toHex(result));
System.out.println(HexUtils.toHex((byte) 0b1010_0101));
// after
assertEquals((byte) 0b1010_1000, result);
assertTrue(_c.getNegativeFlag());
assertTrue(_c.getCarryFlag());
assertTrue(!_c.getZeroFlag());
}
