! \xff\xcd\x03\x80\xd8%w\xbd \xf7$4\xcb\xc6~\xfe:8\x0861$~<\xf60wb%~\xbd0\xff \xf9\xc7v
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H LD HL,0FF0AH ;0000 21 0A FF ! . . CALL 08003H ;0003 CD 03 80 . . . RET C ;0006 D8 . DEC H ;0007 25 % LD (HL),A ;0008 77 W CP L ;0009 BD . JR NZ,$-7 ;000A 20 F7 . INC H ;000C 24 $ INC (HL) ;000D 34 4 SET 0,(HL) ;000E CB C6 . . LD A,(HL) ;0010 7E ~ CP 03AH ;0011 FE 3A . : JR C,$+10 ;0013 38 08 8 . LD (HL),031H ;0015 36 31 6 1 INC H ;0017 24 $ LD A,(HL) ;0018 7E ~ INC A ;0019 3C < OR 030H ;001A F6 30 . 0 LD (HL),A ;001C 77 W LD H,D ;001D 62 B DEC H ;001E 25 % LD A,(HL) ;001F 7E ~ CP L ;0020 BD . JR NC,$+1 ;0021 30 FF 0 . JR NZ,$-5 ;0023 20 F9 . RST 0 ;0025 C7 . HALT ;0026 76 V