SRL r 11001011 00011rrr The contents of the operand "r" are shifted right 1 -bit. The content of bit 0 is copied to the carry flag and b

STOP - 0x10 For the purposes of this emulator, this is identical to HALT. 0 Cycles Flags affected(znhc): ---- */

SUB (HL) - 0x96 The byte at the memory address specified by the contents of the HL register pair is subtracted to the contents of the accumul

SUB n - 0xD6 The 8-bit value n is subtracted from the contents of the Accumulator, and the result is stored in the accumulator. 8 Cycles

SUB r 10010rrr The 8-bit register r is subtracted from the contents of the Accumulator, and the result is stored in the accumulator.

SWAP (HL) 16 Cycles Flags affected(znhc) : z000 */

SWAP r 11001011 00111rrr swap r CB 3x 8 z000 exchange low/hi-nibble swap (HL) CB 36 16 z000 exchange low/hi-nibb

This method is called after the CPU executes an operation. It tallies the number of cycles spent and ensures that the GPU switches between the va

The emulator will call this whenever we hit VBlank

XOR (HL) - 0xAE The logical exclusive-OR operation is performed between the byte pointed to by the HL register and the byte contained in the

XOR n - 0xEE The logical exclusive-OR operation is performed between the 8-bit operand and the byte contained in the accumulator. The result

XOR r 10101rrr The logical exclusive-OR operation is performed between the register specified in the r operand and the byte contained in