How do you use it? Did you add PROGRAM_ADDR / use relocation ZShell: ld HL, (PROGRAM_ADDR) ld DE, Text add HL, DE ROM_CALL(D_ZT_STR) Usgard: ld HL, &Text call D_ZT_STR Also, is your string zero-terminated, i.e. .db "Hello!",0 Andreas
application/ms-tnef