\xd5\xcd\x03\x800\x01v\xfe: \x02\xd60
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H PUSH DE ;0000 D5 . CALL 08003H ;0001 CD 03 80 . . . JR NC,$+3 ;0004 30 01 0 . HALT ;0006 76 V CP 03AH ;0007 FE 3A . : JR NZ,$+4 ;0009 20 02 . SUB 030H ;000B D6 30 . 0