\xfe \x014\xcd\x03\x800\xf6v
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H CP 00AH ;0000 FE 0A . . JR NZ,$+3 ;0002 20 01 . INC (HL) ;0004 34 4 CALL 08003H ;0005 CD 03 80 . . . JR NC,$-8 ;0008 30 F6 0 . HALT ;000A 76 V