\xe5\xcd\x03\x800\x01v\xfe (\x04\xb8\xd8\x06/\x04
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H PUSH HL ;0000 E5 . CALL 08003H ;0001 CD 03 80 . . . JR NC,$+3 ;0004 30 01 0 . HALT ;0006 76 V CP 00AH ;0007 FE 0A . . JR Z,$+6 ;0009 28 04 ( . CP B ;000B B8 . RET C ;000C D8 . LD B,02FH ;000D 06 2F . / INC B ;000F 04 .