Here are the HEX Codes for the REM statement in the BASIC programm, Line1. Use any Hexloader or assembler you have...After all you should set the linenumber to zero by POKE 16510,0.
CD 27 41 AF 32 44 41 CD C4 40 CD 1D 41 28 0B 3A 44 41 FE 32 20 F1 32 42 41 C9
3A 45 41 FE 00 28 09 3A 44 41 07 07 FE 32 38 02 3E 32 32 43 41 CD C4 40 21 44
41 7E 2B BE 20 F5 CD 14 41 20 C4 AF 18 D4 21 03 E0 36 80 CB F0 2B 70 2B 71 2B
1A 77 23 23 CB F8 70 E5 21 44 41 34 E1 C5 06 BE 00 10 FD C1 CB B0 CB B8 C9
ED 4B 3E 41 3E FF 21 02 E0 21 02 E0 CD 1D 41 28 04 3E 02 18 9D CD 14 41 28 C1
18 EB CD 27 41 21 02 E0 CD 1D 41 7E 12 CD 14 41 20 F3 18 AD 03 13 2A 40 41 A7
ED 42 C9 23 36 90 2B 70 2B 71 2B BE C9 ED 5B 3C 41 ED 4B 3E 41 C9
The full assembler listing is HERE
For using another baseaddress than 57344 you must edit two statements: the LD HL,$E003 at address $40C4 to your baseaddress+3 and the LD HL,$E002 at address $4105 to your baseaddress+2.