\xf9\xd4\x03\x80\x09\x00\xd1\x7f\x08\x00\xd0v
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H LD SP,HL ;0000 F9 . CALL NC,08003H ;0001 D4 03 80 . . . ADD HL,BC ;0004 09 . NOP ;0005 00 . POP DE ;0006 D1 . LD A,A ;0007 7F EX AF,AF' ;0008 08 . NOP ;0009 00 . RET NC ;000A D0 . HALT ;000B 76 V