\xfe 0\x02>"\xff\xcd\x03\x800\xf4v
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H CP 020H ;0000 FE 20 . JR NC,$+4 ;0002 30 02 0 . LD A,022H ;0004 3E 22 > " RST 38H ;0006 FF . CALL 08003H ;0007 CD 03 80 . . . JR NC,$-10 ;000A 30 F4 0 . HALT ;000C 76 V