\xcd\x03\x80\x15\x120\xf8\x14 \x04v\xff\x04\x15\x1a\xbe \xf9\x14\x1a\xff\x10\xfb \xff\xcf
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H LD A,(BC) ;0000 0A . CALL 08003H ;0001 CD 03 80 . . . DEC D ;0004 15 . LD (DE),A ;0005 12 . JR NC,$-6 ;0006 30 F8 0 . INC D ;0008 14 . JR NZ,$+6 ;0009 20 04 . HALT ;000B 76 V RST 38H ;000C FF . INC B ;000D 04 . DEC D ;000E 15 . LD A,(DE) ;000F 1A . CP (HL) ;0010 BE . JR NZ,$-5 ;0011 20 F9 . INC D ;0013 14 . LD A,(DE) ;0014 1A . RST 38H ;0015 FF . DJNZ $-3 ;0016 10 FB . . LD A,(BC) ;0018 0A . RST 38H ;0019 FF . RST 8 ;001A CF .