def test_or_multiway(self):
"Checks that or_multiway returns 1 if any bits in the number = 1, and 0 only if all bits = 0"
self.assertTrue(or_multiway(m_eight))
self.assertTrue(or_multiway(neg_three))
self.assertTrue(or_multiway(m_one))
self.assertTrue(or_multiway(neg_one))
self.assertFalse(or_multiway(m_zero))
def alu(x, y, zx, nx, zy, ny, f, no):
"""Calculates a variety of functions on x and y, determined by the combination of control bits
Outputs (out, zr, ng) where out is the 16-bit Multi result, and zr and ng are single Bits"""
neg_one = Multi(Bit(digit) for digit in '1111111111111111')
zero_x = x & Multi(~Bit(zx) for bit in range(16))
zero_y = y & Multi(~Bit(zy) for bit in range(16))
x2 = multimux(zero_x, ~zero_x, nx)
y2 = multimux(zero_y, ~zero_y, ny)
f_xy = multimux(x2 & y2, add_multi(x2, y2), f)
out = multimux(f_xy, ~f_xy, no)
zr = ~(or_multiway(out))
ng = out[0]
return (out, zr, ng)
def alu(x, y, zx, nx, zy, ny, f, no):
"""Calculates a variety of functions on x and y, determined by the combination of control bits
Outputs (out, zr, ng) where out is the 16-bit Multi result, and zr and ng are single Bits"""
neg_one = Multi(Bit(digit) for digit in '1111111111111111')
zero_x = x & Multi(~Bit(zx) for bit in range(16))
zero_y = y & Multi(~Bit(zy) for bit in range(16))
x2 = multimux(zero_x, ~zero_x, nx)
y2 = multimux(zero_y, ~zero_y, ny)
f_xy = multimux(x2 & y2, add_multi(x2, y2), f)
out = multimux(f_xy, ~f_xy, no)
zr = ~(or_multiway(out))
ng = out[0]
return (out, zr, ng)
def test_or_multiway(self):
self.assertTrue(str(or_multiway(m_eight)))
self.assertTrue(str(or_multiway(m_fifteen)))
self.assertTrue(str(or_multiway(m_one)))
self.assertTrue(str(or_multiway(m_zero)))
def test_or_multiway(self):
self.assertTrue(str(or_multiway(m_eight)))
self.assertTrue(str(or_multiway(m_fifteen)))
self.assertTrue(str(or_multiway(m_one)))
self.assertTrue(str(or_multiway(m_zero)))
