\xcd\x03\x808\x04\xd5\xfe@8v\xfe[\xd8
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H CALL 08003H ;0000 CD 03 80 . . . JR C,$+6 ;0003 38 04 8 . PUSH DE ;0005 D5 . CP 040H ;0006 FE 40 . @ JR C,$+120 ;0008 38 76 8 V CP 05BH ;000A FE 5B . [ RET C ;000C D8 .