>\xff\xfe \x01\xe3\xcd\x03\x800\xf5v
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H LD A,0FFH ;0000 3E FF > . CP 00AH ;0002 FE 0A . . JR NZ,$+3 ;0004 20 01 . EX (SP),HL ;0006 E3 . CALL 08003H ;0007 CD 03 80 . . . JR NC,$-9 ;000A 30 F5 0 . HALT ;000C 76 V