\xcd\x03\x80G>+\xcd\x00\x80\x05 \xfa>.\xcd\x00\x80v
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 > + CALL 08000H ;0006 CD 00 80 . . . DEC B ;0009 05 . JR NZ,$-4 ;000A 20 FA . LD A,02EH ;000C 3E 2E > . CALL 08000H ;000E CD 00 80 . . . HALT ;0011 76 V