\xcd\x03\x80G>+\xff\x10\xfb>.\xffv
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
Disassemble:
ORG 00000H CALL 08003H ;0000 CD 03 80 . . . LD B,A ;0003 47 G LD A,02BH ;0004 3E 2B > + RST 38H ;0006 FF . DJNZ $-3 ;0007 10 FB . . LD A,02EH ;0009 3E 2E > . RST 38H ;000B FF . HALT ;000C 76 V