public void Should_SerializeUInt6()
{
UInt6 value = UInt6.MaxValue; // range 0 to 63
Assert.AreEqual(1, value.GetBit(0));
Assert.AreEqual(1, value.GetBit(1));
Assert.AreEqual(1, value.GetBit(2));
Assert.AreEqual(1, value.GetBit(3));
Assert.AreEqual(1, value.GetBit(4));
Assert.AreEqual(1, value.GetBit(5));
Assert.AreEqual(new Bit[] { 1, 1, 1, 1, 1, 1 }, value.GetBits());
value = (UInt6)2;
Assert.AreEqual(0, value.GetBit(0));
Assert.AreEqual(1, value.GetBit(1));
Assert.AreEqual(0, value.GetBit(2));
Assert.AreEqual(0, value.GetBit(3));
Assert.AreEqual(0, value.GetBit(4));
Assert.AreEqual(0, value.GetBit(5));
Assert.AreEqual(new Bit[] { 0, 1, 0, 0, 0, 0 }, value.GetBits());
// test overflow
value = (UInt6)76;
Assert.AreEqual(12, value);
Assert.AreEqual(0, value.GetBit(0));
Assert.AreEqual(0, value.GetBit(1));
Assert.AreEqual(1, value.GetBit(2));
Assert.AreEqual(1, value.GetBit(3));
Assert.AreEqual(0, value.GetBit(4));
Assert.AreEqual(0, value.GetBit(5));
Assert.AreEqual(new Bit[] { 0, 0, 1, 1, 0, 0 }, value.GetBits());
}
protected override void OnTick() // TODO mere manuel
{
switch (format.val)
{
case InstructionFormat.i: imm.val = (int)imm12.val; break;
case InstructionFormat.s: imm.val = (int)((imm7.val << 5) | (imm5.val)); break;
case InstructionFormat.b: {
int eleven = imm5.val & 1;
UInt5 fourone = (UInt5)(imm5.val & 0b11110);
int twelve = imm7.val >> 6 & 1;
UInt6 tenfive = (UInt6)(imm7.val & 0b0111111);
imm.val = (int)((twelve == 1 ? 0 : unchecked ((int)0xFFFFF000)) |
(eleven << 11) |
(tenfive << 5) |
fourone);
}; break;
case InstructionFormat.u: imm.val = (int)(imm20.val << 12); break;
case InstructionFormat.j: {
int twenty = (int)((imm20.val >> 19) & 1);
int tenone = (int)((imm20.val >> 9) & 0x1FF);
int eleven = (int)((imm20.val >> 8) & 1);
int nineteentwelve = (int)((imm20.val) & 0b11111111);
imm.val = (int)((twenty == 1 ? 0 : unchecked ((int)0xFFF00000)) |
(nineteentwelve << 12) |
(eleven << 11) |
(tenone << 1)
);
}; break;
default: imm.val = 0; break;
}
}
