public void SUB_rTest()
{
PrivateObject z = new PrivateObject(new Z80(new Memory48K()));
Z80_Accessor target = new Z80_Accessor(z);
target.A = 0x29;
target.D = 0x11;
target.SUB_r(2);
Assert.IsTrue(target.A == 0x18);
}
public void JimmyTest()
{
PrivateObject param0 = new PrivateObject(new Z80(new Memory48K()));
Z80_Accessor target = new Z80_Accessor(param0);
target.Set16BitRegisters(0, 0x0000);
target.DEC_ss(0);
Assert.IsTrue(target.Get16BitRegisters(0) == 0xffff);
target.A = 199;
target.CPL();
Assert.IsTrue(target.A == 56);
target.A = 100;
target.NEG();
Assert.IsTrue(target.A == 156);
target.A = 16;
target.B = 1;
target.SUB_r(0);
Assert.IsTrue(target.A == 15 && (target.F & Flag.HalfCarry) == Flag.HalfCarry);
}
public void Arithmetic8BitTest()
{
// 8-bit Load group
PrivateObject param0 = new PrivateObject(new Z80(new Memory48K()));
Z80_Accessor target = new Z80_Accessor(param0);
target.A = 64;
target.B = 65;
target.ADD_A_r(0);
// 129 / -127
Assert.IsTrue(target.A == 129
&& (target.F & Flag.Carry) != Flag.Carry
&& (target.F & Flag.ParityOverflow) == Flag.ParityOverflow
&& (target.F & Flag.Sign) == Flag.Sign);
target.A = 255;
target.B = 255;
target.ADD_A_r(0);
// 510 -> 254 / -2
Assert.IsTrue(target.A == 254
&& (target.F & Flag.Carry) == Flag.Carry
&& (target.F & Flag.ParityOverflow) != Flag.ParityOverflow
&& (target.F & Flag.Sign) == Flag.Sign);
target.A = 192;
target.B = 191;
target.ADD_A_r(0);
// 383 -> 127 / -129 -> 127
Assert.IsTrue(target.A == 127
&& (target.F & Flag.Carry) == Flag.Carry
&& (target.F & Flag.ParityOverflow) == Flag.ParityOverflow
&& (target.F & Flag.Sign) != Flag.Sign);
target.A = 6;
target.B = 8;
target.ADD_A_r(0);
// 14 / 14
Assert.IsTrue(target.A == 14
&& (target.F & Flag.Carry) != Flag.Carry
&& (target.F & Flag.ParityOverflow) != Flag.ParityOverflow
&& (target.F & Flag.Sign) != Flag.Sign);
target.A = 127;
target.B = 1;
target.ADD_A_r(0);
// 128 / 128 -> -128
Assert.IsTrue(target.A == 128
&& (target.F & Flag.Carry) != Flag.Carry
&& (target.F & Flag.ParityOverflow) == Flag.ParityOverflow
&& (target.F & Flag.Sign) == Flag.Sign);
target.A = 4;
target.B = 254;
target.ADD_A_r(0);
// 258 -> 2 / -2 -> 2
Assert.IsTrue(target.A == 2
&& (target.F & Flag.Carry) == Flag.Carry
&& (target.F & Flag.ParityOverflow) != Flag.ParityOverflow
&& (target.F & Flag.Sign) != Flag.Sign);
target.A = 254;
target.B = 252;
target.ADD_A_r(0);
// 506 -> 250 / -6
Assert.IsTrue(target.A == 250
&& (target.F & Flag.Carry) == Flag.Carry
&& (target.F & Flag.ParityOverflow) != Flag.ParityOverflow
&& (target.F & Flag.Sign) == Flag.Sign);
target.A = 129;
target.B = 194;
target.ADD_A_r(0);
// 323 -> 67 / -189 -> 67
Assert.IsTrue(target.A == 67
&& (target.F & Flag.Carry) == Flag.Carry
&& (target.F & Flag.ParityOverflow) == Flag.ParityOverflow
&& (target.F & Flag.Sign) != Flag.Sign);
target.A = 254;
target.B = 129;
target.SUB_r(0);
// 125 / 125
Assert.IsTrue(target.A == 125
&& (target.F & Flag.Carry) != Flag.Carry
&& (target.F & Flag.ParityOverflow) != Flag.ParityOverflow
&& (target.F & Flag.Sign) != Flag.Sign);
target.A = 196;
target.B = 91;
target.SUB_r(0);
// 105 / -151 -> 105
Assert.IsTrue(target.A == 105
&& (target.F & Flag.Carry) != Flag.Carry
&& (target.F & Flag.ParityOverflow) == Flag.ParityOverflow
&& (target.F & Flag.Sign) != Flag.Sign);
target.A = 12;
target.B = 60;
target.SUB_r(0);
// -48 -> 208 / -48
Assert.IsTrue(target.A == 208
&& (target.F & Flag.Carry) == Flag.Carry
&& (target.F & Flag.ParityOverflow) != Flag.ParityOverflow
&& (target.F & Flag.Sign) == Flag.Sign);
target.A = 146;
target.B = 231;
target.SUB_r(0);
// -85 -> 171 / -341 -> -85
Assert.IsTrue(target.A == 171
&& (target.F & Flag.Carry) == Flag.Carry
&& (target.F & Flag.ParityOverflow) != Flag.ParityOverflow
&& (target.F & Flag.Sign) == Flag.Sign);
}