Thread: Research: Hex codes in Advance Text
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Old June 20th, 2013 (1:10 PM).
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Hi all! I'm not sure how to get a thread approved by mods so here goes.

I was messing around with hex codes in Advance Text yesterday and discovered some peculiar things that I was hoping some people here could help me with. Specifically, I was trying to change text colors when I noticed the colors didn't match up to what everyone else was saying.

So I did some investigating, and that led me to this.

Hex "FC" (appears as "\c") is supposed to be the color modifier, right? Well, it does more. Look here:

 FC calls for formatting (\c)
FC01xx        text colors
FC02xx        text highlight colors
FC03xx         shadow colors
FC04xxxxxx        –-
FC05xx        –-
FC06xx        font modifier
FC07            –-
FC08            –-
FC09            hides the rest of this line until you press A
FC0A            --
FC0Bxxxx        --
FC0Cxx        replace xx with next character in text
FC0Dxx        --
FC0E        ?    skips over text box too fast for me to tell
FC0F            skips over previous line
FC10xxxx        --
FC11xx        --            
FC12xx        --    
FC13xx        --
FC14xx        --    
FC15            switches to Japanese font (from Latin)
FC16            switches to Latin font (from Japanese)
FC17            –-
FC18            –-
The "--" means I couldn't find any visible effect. The xx at the end of the hex code is how many bytes the function calls on.

FC 00 and 19 onwards, no effect. So FC19 would give you index 19 on the character map (ç in English font, Hiragana “no” in Japanese font). The ones I couldn't figure out I left as “--” but they could have some effect. If anybody wants to study this, please let me know what you find.

Here are the modifiers from the previous list:
Color modifier:
x0            no color
x1            no color
x2            black
x3 gray?
x4            red
x5            orange
x6            green
x7            light green
x8    [blue]    blue
x9            light blue
xA            no color
xB            steel blue
xC            steel blue
xD            steel blue
xE            light blue
xF            blue

 Font modifier:
00    small Latin characters (this font can be used to fit more text in small space)
01    –-
02    same as [small] in Advance-Text, not sure what it does in English version
03 onwards apparently no effect
I don't know if anyone else has dicovered that you can not only change text colors, but also highlight and shadow colors.

We all know that 3rd generation games are compatible with international trades, right? Well, in order for that compatibility to happen, both the Latin and Japanese fonts need to exist in the game code. Apparently HEX FC15 and FC16 switches between both of them. I'm sure there's a way this can be useful for more than just translation.

I'm going to experiment some more the next few days, especially with the Japanese font now that I know how to access it.

This might be really useful for ROM translators (I want to try translating Pokémon Altair, Sirius, Vega, Deneb and Procyon). I think people working on Pokémon Debug Ruby might also want to take a look at this.

Here's the character table for the fonts:
Character Map for fonts
 Hex    EN font    JP font
00    (space)    (space)
01    À        a  (hiragana)
02    Á        i
03    Â        u
04    Ç        e
05    È        o
06    É        ka
07    Ê        ki
08    Ë        ku
09    Ì        ke
0A    nothing?    ko
0B    Î        sa
0C    Ï        si
0D    Ò        su
0E    Ó        se
0F    Ô        so

10    Æ        ta
11    Ù        ti
12    Ú        tu
13    Û        te
14    Ñ        to
15    ß        na
16    à        ni
17    á        nu
18    nothing?    ne    
19    ç        no
1A    è        ha
1B    é        hi
1C    ê        hu (?)
1D    ë        he
1E    ì        ho
1F    nothing?    ma

20    î        mi
21    ï        mu
22    ò        me
23    ó        mo
24    ô        ya
25    æ        yu
26    ù        yo
27    ú        ra
28    û        ri
29    ñ        ru
2A    °(degree)    re
2B    ª        ro
2C    · (dot)    wa
2D    &        wo
2E    +        n
2F    nothing?    a small

30    nothing?    i small
31    nothing?    u small
32    nothing?    e small
33    nothing?    o small
34    [LV]        ya small
35    =        yu small
36    ;        yo small
37    nothing?    ga
38    nothing?    gi
39    nothing?    gu
3A    nothing?    ge
3B    nothing?    go
3C    nothing?    za
3D    nothing?    zi
3E    nothing?    zu
3F    nothing?    ze

40    nothing?    zo
41    nothing?    da
42    nothing?    di
43    nothing?    du
44    nothing?    de
45    nothing?    do
46    nothing?    ba
47    nothing?    bi
48    nothing?    bu
49    nothing?    be
4A    nothing?    bo
4B    nothing?    pa
4C    nothing?    pi
4D    nothing?    pu
4E    nothing?    pe
4F    nothing?    po

50    nothing?    tu small?
51    ¿        a (katakana)
52    ¡        I
53    [PK]        u
54    [MN]        e
55    [PO]        o
56    [Ke]        ka
57    [BL]        ki
58    [OC]        ku
59    [K]        ke
5A    Í        ko
5B    %        sa
5C    (        si
5D    )        su
5E    nothing?    se
5F    nothing?    so

60    nothing?    ta
61    nothing?    ti
62    nothing?    tu
63    nothing?    te
64    nothing?    to
65    nothing?    na
66    nothing?    ni
67    nothing?    nu
68    â        ne
69    nothing?    no
6A    nothing?    ha
6B    nothing?    hi
6C    nothing?    hu
6D    nothing?    he
6E    nothing?    ho
6F    î        ma

70    nothing?    mi
71    nothing?    mu
72    nothing?    me
73    nothing?    mo
74    nothing?    ya
75    nothing?    yu
76    nothing?    yo
77    nothing?    ra
78    nothing?    ri
79    U arrow    ru    
7A    D arrow    re
7B    L arrow    ro
7C    R arrow    wa
7D    nothing?    wo
7E    nothing?    n
7F    nothing?    a small

80    nothing?    i small
81    nothing?    u small
82    nothing?    e small
83    nothing?    o small
84    nothing?    ya small
85    nothing?    yu small
86    nothing?    yo small
87    nothing?    ga
88    nothing?    gi
89    nothing?    gu
8A    nothing?    ge
8B    nothing?    go
8C    nothing?    za
8D    nothing?    zi
8E    nothing?    zu
8F    nothing?    ze

90    nothing?    zo
91    nothing?    da
92    nothing?    di
93    nothing?    du
94    nothing?    de
95    nothing?    do
96    nothing?    ba
97    nothing?    bi
98    nothing?    bu
99    nothing?    be
9A    nothing?    bo
9B    nothing?    pa
9C    nothing?    pi
9D    nothing?    pu
9E    nothing?    pe
9F    nothing?    po

A0    nothing?    tu small
A1    0        0
A2    1        1
A3    2        2
A4    3        3
A5    4        4
A6    5        5
A7    6        6
A8    7        7
A9    8        8
AA    9        9
AB    !        !
AC    ?        ?
AD    .        .
AE    -        -
AF    · dot        · dot

B0    [...]        [···] raised
B1    "        "open
B2    "        "open    
B3    '        'open
B4    '        'close
B5    [m]        [m]
B6    [f]        [f]
B7    $        $
B8    ,        .
B9    [x]        [x]
BA    /        /
BB    A        A
BC    B        B
BD    C        C
BE    D        D
BF    E        E

C0    F        F
C1    G        G
C2    H        H
C3    I        I
C4    J        J
C5    K        K
C6    L        L
C7    M        M
C8    N        N
C9    O        O
CA    P        P
CB    Q        Q
CC    R        R
CD    S        S
CE    T        T
CF    U        U

D0    V        V
D1    W        W
D2    X        X
D3    Y        Y
D4    Z        Z
D5    a        a
D6    b        b
D7    c        c
D8    d        d
D9    e        e
DA    f        f
DB    g        g
DC    h        h
DD    i        I
DE    j        j
DF    k        k

E0    l        l
E1    m        m
E2    n        n
E3    o        o
E4    p        p
E5    q        q
E6    r        r
E7    s        s
E8    t        t
E9    u        u
EA    v        v
EB    w        w
EC    x        x
ED    y        y
EE    z        z
EF    [>]        [>]

F0    :        :
F1    Ä        Ä
F2    Ö        Ö
F3    Ü        Ü
F4    ä        ä
F5    ö        ö
F6    ü        ü
F7    [u] nothing?
F8    [d] nothing?
F9    [l] big space?    
FA    line break    
FB    page break    
FC    \c
FD    \v    
FE    line break?    
FF    end of text
If it says "nothing?" it's not actually nothing. Looking at how the hex codes are used elsewhere, they call on certain commands or texts (like ____ gained ____ EXP. Points). I'll post any new information as I get it.

I'm wondering if in the ROM, for something like a move name, you could just replace the name of the move "Scratch" with \c (format hex FC,japanese font hex 15, text "ひっかく hikaku" with the hex values from the Japanese character map) and if that would appear correctly.

Just an FYI, you CAN load English save states of Fire Red into Japanese and vice versa. Everything appears correctly, which shows that both versions use the same RAM data structure. There's some kind of flag built into the ROM that sets the region and the Pokémon's nickname. Maybe the Name Rater's script has some clue?

An up to date version of my findings can be found on Google Docs.
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