.\x15\xcd\x03\x80\xcbE \xff5 \xf6+\x18\xf3<\x06\x12\x0c\x0c\x06\x18v
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H LD L,015H ;0000 2E 15 . . CALL 08003H ;0002 CD 03 80 . . . BIT 0,L ;0005 CB 45 . E JR NZ,$+1 ;0007 20 FF . DEC (HL) ;0009 35 5 JR NZ,$-8 ;000A 20 F6 . DEC HL ;000C 2B + JR $-11 ;000D 18 F3 . . INC A ;000F 3C < LD B,012H ;0010 06 12 . . INC C ;0012 0C . INC C ;0013 0C . LD B,018H ;0014 06 18 . . HALT ;0016 76 V