\x1b\x15\x12\xcd\x03\x80\xd8\xbe \xf7\x16\xff\xc7\x1b\x1a\xbe0\xff \xf9v
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H LD A,(BC) ;0000 0A . DEC DE ;0001 1B . DEC D ;0002 15 . LD (DE),A ;0003 12 . CALL 08003H ;0004 CD 03 80 . . . RET C ;0007 D8 . CP (HL) ;0008 BE . JR NZ,$-7 ;0009 20 F7 . LD D,0FFH ;000B 16 FF . . RST 0 ;000D C7 . DEC DE ;000E 1B . LD A,(DE) ;000F 1A . CP (HL) ;0010 BE . JR NC,$+1 ;0011 30 FF 0 . JR NZ,$-5 ;0013 20 F9 . HALT ;0015 76 V LD A,(BC) ;0016 0A .