; creates a copy of unhacked.rom named hacked.rom to edit,
; then assigns a header of $0.
.open unhacked.rom, hacked.rom, $0

; sets it up for GBA mode.
; Might be unnecessary for text editing?
.gba
.thumb
    ; load a table for the assembler to use when compiling
    ; strings.
    .loadtable "ascii.tbl"

; point the assembler to free space.
.org $300000
; label to use as a pointer.
NewText:
    ; generic placeholder string
    .string "This is a test!"
NewText2:
    ; generic placeholder string
    .string "This is another test!"


; pointer to the text.
.org $dd73c
    ; writes the pointer to new text.
    ; subtract $DC0000 because that's how it's done
    ; in the ROM.
    .word NewText - $DC0000
    ; this puts the pointer immediately after the previous one,
    ; so it would get written at $dd740 ($dd73c + 4).
    .word NewText2 - $DC0000

; everything that is opened must be closed.
.close