\xf5\x04\xcd\x03\x800\xf7\xf1\x10\xfcv
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H PUSH AF ;0000 F5 . INC B ;0001 04 . CALL 08003H ;0002 CD 03 80 . . . JR NC,$-7 ;0005 30 F7 0 . POP AF ;0007 F1 . DJNZ $-2 ;0008 10 FC . . HALT ;000A 76 V