//469 of 501 opcodes implemented (but how many are implemented correctly? :P)
/* Unimplemented 0x00 - 0x3F Opcodes
10 00 STOP ---- special ??? (old djnz disp)
27 DAA
*/
/* Unimplemented 0x40 - 0x7F Opcodes
76 HALT
*/
/* Unimplemented 0xC0 - 0xFF Opcodes
C0 RET NZ
C1 POP BC
C4 CALL NZ,nnnn
C5 PUSH BC
C7 RST 00H
C8 RET Z
C9 RET
CC CALL Z,nnnn
CD CALL nnnn
CF RST 8
D0 RET NC
D1 POP DE
D4 CALL NC,nnnn
D5 PUSH DE
D7 RST 10H
D8 RET C
D9 RETI ---- remapped (old exx)
DC CALL C,nnnn
DF RST 18H
E1 POP HL
E5 PUSH HL
E7 RST 20H
EF RST 28H
F1 POP AF
F3 DI
F5 PUSH AF
F7 RST 30H
FB EI
FF RST 38H
*/