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<h1 class="topictitle1">DBCS code scheme</h1>
<div><p>IBM<sup>®</sup> supports
two DBCS code schemes: one for the host servers, the other for personal computers.</p>
<div class="section"><div class="p">The IBM-host code scheme has the following code-range characteristics: <dl><dt class="dlterm">First byte</dt>
<dd>hex 41 to hex FE</dd>
<dt class="dlterm">Second byte</dt>
<dd>hex 41 to hex FE</dd>
<dt class="dlterm">Double-byte blank</dt>
<dd>hex 4040</dd>
</dl>
</div>
</div>
<div class="section"><p>In <a href="#rbal3dbcscs__codesch">Figure 1</a>, using the first
byte as the vertical axis and the second byte as the horizontal axis, 256
x 256 intersections or code points are expressed. The lower-right code area
is designated as the valid double-byte code area and x is assigned to the
double-byte blank.</p>
</div>
<div class="example"> <div class="fignone" id="rbal3dbcscs__codesch"><a name="rbal3dbcscs__codesch"><!-- --></a><span class="figcap">Figure 1. IBM-Host code scheme</span><br /><img src="rslh712.gif" alt="Graphic depicting the IBM&#xA;host code scheme" /><br /></div>
</div>
<div class="section"><p>By assigning the values hex 41 to hex FE in the first and second
bytes as the DBCS codes, the codes can be grouped in wards with 192 code points
in each ward. For example, the code group with the first byte starting with
hex 42 is called <em>ward 42</em>. Ward 42 has the same alphanumeric characters
as those in a corresponding single-byte EBCDIC code page, but with double-byte
codes. For example, the character <em>A</em> is represented in single-byte EBCDIC
code as hex C1 and in IBM-host code as hex 42C1.</p>
<div class="p">The <span class="keyword">iSeries™</span> server
supports the following double-byte character sets: <ul><li>IBM Japanese
character set</li>
<li>IBM Korean
character set</li>
<li>IBM Simplified
Chinese character set</li>
<li>IBM Traditional
Chinese character set</li>
</ul>
The following tables show the code ranges for each character set and
the number of characters supported in each character set.</div>
</div>
<div class="tablenoborder"><a name="rbal3dbcscs__rbal3gkr"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rbal3dbcscs__rbal3gkr" width="100%" frame="hsides" border="0" rules="none"><caption>Table 1. IBM Japanese character
set</caption><thead align="left"><tr><th align="left" valign="bottom" width="28.535353535353536%" id="d0e97">  Wards</th>
<th align="left" valign="bottom" width="47.22222222222222%" id="d0e99">  Content</th>
<th align="left" valign="bottom" width="24.242424242424242%" id="d0e101">Number of Characters</th>
</tr>
</thead>
<tbody><tr><td align="left" valign="top" width="28.535353535353536%" headers="d0e97 ">40</td>
<td align="left" valign="top" width="47.22222222222222%" headers="d0e99 ">Space in 4040</td>
<td align="left" valign="top" width="24.242424242424242%" headers="d0e101 ">1</td>
</tr>
<tr><td align="left" valign="bottom" width="28.535353535353536%" headers="d0e97 "> </td>
<td valign="top" width="47.22222222222222%" headers="d0e99 ">&nbsp;</td>
<td valign="top" width="24.242424242424242%" headers="d0e101 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="28.535353535353536%" headers="d0e97 ">41 to 44</td>
<td align="left" valign="top" width="47.22222222222222%" headers="d0e99 ">Non-Kanji characters <ul><li>Greek, Russian, Roman numeric (Ward 41)</li>
<li>Alphanumeric and related symbols (Ward 42)</li>
<li>Katakana, Hiragana, and special symbols (Ward 43-44)</li>
</ul>
</td>
<td align="left" valign="top" width="24.242424242424242%" headers="d0e101 ">549</td>
</tr>
<tr><td align="left" valign="bottom" width="28.535353535353536%" headers="d0e97 "> </td>
<td valign="top" width="47.22222222222222%" headers="d0e99 ">&nbsp;</td>
<td valign="top" width="24.242424242424242%" headers="d0e101 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="28.535353535353536%" headers="d0e97 ">45 to 55</td>
<td align="left" valign="top" width="47.22222222222222%" headers="d0e99 ">Basic Kanji characters</td>
<td align="left" valign="top" width="24.242424242424242%" headers="d0e101 ">3226</td>
</tr>
<tr><td align="left" valign="bottom" width="28.535353535353536%" headers="d0e97 "> </td>
<td valign="top" width="47.22222222222222%" headers="d0e99 ">&nbsp;</td>
<td valign="top" width="24.242424242424242%" headers="d0e101 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="28.535353535353536%" headers="d0e97 ">56 to 68</td>
<td align="left" valign="top" width="47.22222222222222%" headers="d0e99 ">Extended Kanji characters</td>
<td align="left" valign="top" width="24.242424242424242%" headers="d0e101 ">3487</td>
</tr>
<tr><td align="left" valign="bottom" width="28.535353535353536%" headers="d0e97 "> </td>
<td valign="top" width="47.22222222222222%" headers="d0e99 ">&nbsp;</td>
<td valign="top" width="24.242424242424242%" headers="d0e101 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="28.535353535353536%" headers="d0e97 ">69 to 7F</td>
<td align="left" valign="top" width="47.22222222222222%" headers="d0e99 ">User-defined characters</td>
<td align="left" valign="top" width="24.242424242424242%" headers="d0e101 ">Up to 4370</td>
</tr>
<tr><td align="left" valign="bottom" width="28.535353535353536%" headers="d0e97 "> </td>
<td valign="top" width="47.22222222222222%" headers="d0e99 ">&nbsp;</td>
<td valign="top" width="24.242424242424242%" headers="d0e101 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="28.535353535353536%" headers="d0e97 ">80 to FE</td>
<td align="left" valign="top" width="47.22222222222222%" headers="d0e99 ">Reserved</td>
<td align="left" valign="top" width="24.242424242424242%" headers="d0e101 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="28.535353535353536%" headers="d0e97 "> </td>
<td valign="top" width="47.22222222222222%" headers="d0e99 ">&nbsp;</td>
<td valign="top" width="24.242424242424242%" headers="d0e101 ">&nbsp;</td>
</tr>
<tr><td colspan="3" align="left" valign="top" headers="d0e97 d0e99 d0e101 "> <p>Total
number of IBM-defined characters: 7263</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><a name="rbal3dbcscs__rbal3nhn"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rbal3dbcscs__rbal3nhn" width="100%" frame="hsides" border="0" rules="none"><caption>Table 2. IBM Korean character
set</caption><thead align="left"><tr><th align="left" valign="bottom" width="19.19191919191919%" id="d0e199">  Wards</th>
<th align="left" valign="bottom" width="55.80808080808081%" id="d0e201">  Content</th>
<th align="left" valign="bottom" width="25%" id="d0e203">Number of Characters</th>
</tr>
</thead>
<tbody><tr><td align="left" valign="top" width="19.19191919191919%" headers="d0e199 ">40</td>
<td align="left" valign="top" width="55.80808080808081%" headers="d0e201 ">Space in 4040</td>
<td align="left" valign="top" width="25%" headers="d0e203 ">1</td>
</tr>
<tr><td align="left" valign="bottom" width="19.19191919191919%" headers="d0e199 "> </td>
<td valign="top" width="55.80808080808081%" headers="d0e201 ">&nbsp;</td>
<td valign="top" width="25%" headers="d0e203 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="19.19191919191919%" headers="d0e199 ">41 to 46</td>
<td align="left" valign="top" width="55.80808080808081%" headers="d0e201 ">Non-Hangeul/Hanja characters (Latin alphabet,
Greek, Roman, Japanese Kana, numeric, special symbols)</td>
<td align="left" valign="top" width="25%" headers="d0e203 ">939</td>
</tr>
<tr><td align="left" valign="bottom" width="19.19191919191919%" headers="d0e199 "> </td>
<td valign="top" width="55.80808080808081%" headers="d0e201 ">&nbsp;</td>
<td valign="top" width="25%" headers="d0e203 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="19.19191919191919%" headers="d0e199 ">47 to 4F</td>
<td align="left" valign="top" width="55.80808080808081%" headers="d0e201 ">Reserved</td>
<td align="left" valign="top" width="25%" headers="d0e203 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="19.19191919191919%" headers="d0e199 "> </td>
<td valign="top" width="55.80808080808081%" headers="d0e201 ">&nbsp;</td>
<td valign="top" width="25%" headers="d0e203 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="19.19191919191919%" headers="d0e199 ">50 to 6C</td>
<td align="left" valign="top" width="55.80808080808081%" headers="d0e201 ">Hanja characters</td>
<td align="left" valign="top" width="25%" headers="d0e203 ">5265</td>
</tr>
<tr><td align="left" valign="bottom" width="19.19191919191919%" headers="d0e199 "> </td>
<td valign="top" width="55.80808080808081%" headers="d0e201 ">&nbsp;</td>
<td valign="top" width="25%" headers="d0e203 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="19.19191919191919%" headers="d0e199 ">6D to 83</td>
<td align="left" valign="top" width="55.80808080808081%" headers="d0e201 ">Reserved</td>
<td align="left" valign="top" width="25%" headers="d0e203 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="19.19191919191919%" headers="d0e199 "> </td>
<td valign="top" width="55.80808080808081%" headers="d0e201 ">&nbsp;</td>
<td valign="top" width="25%" headers="d0e203 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="19.19191919191919%" headers="d0e199 ">84 to D3</td>
<td align="left" valign="top" width="55.80808080808081%" headers="d0e201 ">Hangeul characters (Jamo included)</td>
<td align="left" valign="top" width="25%" headers="d0e203 ">2672</td>
</tr>
<tr><td align="left" valign="bottom" width="19.19191919191919%" headers="d0e199 "> </td>
<td valign="top" width="55.80808080808081%" headers="d0e201 ">&nbsp;</td>
<td valign="top" width="25%" headers="d0e203 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="19.19191919191919%" headers="d0e199 ">D4 to DD</td>
<td align="left" valign="top" width="55.80808080808081%" headers="d0e201 ">User-defined characters</td>
<td align="left" valign="top" width="25%" headers="d0e203 ">Up to 1880</td>
</tr>
<tr><td align="left" valign="bottom" width="19.19191919191919%" headers="d0e199 "> </td>
<td valign="top" width="55.80808080808081%" headers="d0e201 ">&nbsp;</td>
<td valign="top" width="25%" headers="d0e203 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="19.19191919191919%" headers="d0e199 ">DE to FE</td>
<td align="left" valign="top" width="55.80808080808081%" headers="d0e201 ">Reserved</td>
<td align="left" valign="top" width="25%" headers="d0e203 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="19.19191919191919%" headers="d0e199 "> </td>
<td valign="top" width="55.80808080808081%" headers="d0e201 ">&nbsp;</td>
<td valign="top" width="25%" headers="d0e203 ">&nbsp;</td>
</tr>
<tr><td colspan="3" align="left" valign="top" headers="d0e199 d0e201 d0e203 "> <p>Total number
of IBM-defined characters: 8877</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><a name="rbal3dbcscs__rbal3sim"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rbal3dbcscs__rbal3sim" width="100%" frame="hsides" border="0" rules="none"><caption>Table 3. IBM Simplified
Chinese character set</caption><thead align="left"><tr><th align="left" valign="bottom" width="26.515151515151516%" id="d0e318">  Wards</th>
<th align="left" valign="bottom" width="44.696969696969695%" id="d0e320">  Content</th>
<th align="left" valign="bottom" width="28.78787878787879%" id="d0e322">Number of Characters</th>
</tr>
</thead>
<tbody><tr><td align="left" valign="top" width="26.515151515151516%" headers="d0e318 ">40</td>
<td align="left" valign="top" width="44.696969696969695%" headers="d0e320 ">Space in 4040</td>
<td align="left" valign="top" width="28.78787878787879%" headers="d0e322 ">1</td>
</tr>
<tr><td align="left" valign="bottom" width="26.515151515151516%" headers="d0e318 "> </td>
<td valign="top" width="44.696969696969695%" headers="d0e320 ">&nbsp;</td>
<td valign="top" width="28.78787878787879%" headers="d0e322 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="26.515151515151516%" headers="d0e318 ">41 to 47</td>
<td align="left" valign="top" width="44.696969696969695%" headers="d0e320 ">Non-Chinese characters (Latin alphabet, Greek,
Russian, Japanese Kana, numeric, special symbols)</td>
<td align="left" valign="top" width="28.78787878787879%" headers="d0e322 ">712</td>
</tr>
<tr><td align="left" valign="bottom" width="26.515151515151516%" headers="d0e318 "> </td>
<td valign="top" width="44.696969696969695%" headers="d0e320 ">&nbsp;</td>
<td valign="top" width="28.78787878787879%" headers="d0e322 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="26.515151515151516%" headers="d0e318 ">48 to 6F</td>
<td align="left" valign="top" width="44.696969696969695%" headers="d0e320 ">Chinese characters: Level 1 and Level 2</td>
<td align="left" valign="top" width="28.78787878787879%" headers="d0e322 ">3755 and 3008</td>
</tr>
<tr><td align="left" valign="bottom" width="26.515151515151516%" headers="d0e318 "> </td>
<td valign="top" width="44.696969696969695%" headers="d0e320 ">&nbsp;</td>
<td valign="top" width="28.78787878787879%" headers="d0e322 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="26.515151515151516%" headers="d0e318 ">70 to 75</td>
<td align="left" valign="top" width="44.696969696969695%" headers="d0e320 ">Reserved</td>
<td align="left" valign="top" width="28.78787878787879%" headers="d0e322 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="26.515151515151516%" headers="d0e318 "> </td>
<td valign="top" width="44.696969696969695%" headers="d0e320 ">&nbsp;</td>
<td valign="top" width="28.78787878787879%" headers="d0e322 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="26.515151515151516%" headers="d0e318 ">76 to 7F</td>
<td align="left" valign="top" width="44.696969696969695%" headers="d0e320 ">User-defined characters</td>
<td align="left" valign="top" width="28.78787878787879%" headers="d0e322 ">Up to 1880</td>
</tr>
<tr><td align="left" valign="bottom" width="26.515151515151516%" headers="d0e318 "> </td>
<td valign="top" width="44.696969696969695%" headers="d0e320 ">&nbsp;</td>
<td valign="top" width="28.78787878787879%" headers="d0e322 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="26.515151515151516%" headers="d0e318 ">80 to FE</td>
<td align="left" valign="top" width="44.696969696969695%" headers="d0e320 ">Reserved</td>
<td align="left" valign="top" width="28.78787878787879%" headers="d0e322 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="26.515151515151516%" headers="d0e318 "> </td>
<td valign="top" width="44.696969696969695%" headers="d0e320 ">&nbsp;</td>
<td valign="top" width="28.78787878787879%" headers="d0e322 ">&nbsp;</td>
</tr>
<tr><td colspan="3" align="left" valign="top" headers="d0e318 d0e320 d0e322 "> <p>Total number
of IBM-defined characters: 7476</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="tablenoborder"><a name="rbal3dbcscs__rbal3ncs"><!-- --></a><table cellpadding="4" cellspacing="0" summary="" id="rbal3dbcscs__rbal3ncs" width="100%" frame="hsides" border="0" rules="none"><caption>Table 4. IBM Traditional
Chinese character set</caption><thead align="left"><tr><th align="left" valign="bottom" width="22.727272727272727%" id="d0e413">  Wards</th>
<th align="left" valign="bottom" width="50.252525252525245%" id="d0e415">  Content</th>
<th align="left" valign="bottom" width="27.02020202020202%" id="d0e417">Number of Characters</th>
</tr>
<tr><th align="left" valign="bottom" width="22.727272727272727%" id="d0e420"> </th>
<th valign="top" width="50.252525252525245%" id="d0e422">&nbsp;</th>
<th valign="top" width="27.02020202020202%" id="d0e423">&nbsp;</th>
</tr>
</thead>
<tbody><tr><td align="left" valign="top" width="22.727272727272727%" headers="d0e413 d0e420 ">40</td>
<td align="left" valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">Space in 4040</td>
<td align="left" valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">1</td>
</tr>
<tr><td align="left" valign="bottom" width="22.727272727272727%" headers="d0e413 d0e420 "> </td>
<td valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">&nbsp;</td>
<td valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="22.727272727272727%" headers="d0e413 d0e420 ">41 to 49</td>
<td align="left" valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">Non-Chinese characters (Latin alphabet, Greek,
Roman, Japanese Kana, numeric, special symbols)</td>
<td align="left" valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">1003</td>
</tr>
<tr><td align="left" valign="bottom" width="22.727272727272727%" headers="d0e413 d0e420 "> </td>
<td valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">&nbsp;</td>
<td valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="22.727272727272727%" headers="d0e413 d0e420 ">4A to 4B</td>
<td align="left" valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">Reserved</td>
<td align="left" valign="top" width="27.02020202020202%" headers="d0e417 d0e423 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="22.727272727272727%" headers="d0e413 d0e420 "> </td>
<td valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">&nbsp;</td>
<td valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="22.727272727272727%" headers="d0e413 d0e420 ">4C to 68</td>
<td align="left" valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">Primary Chinese characters</td>
<td align="left" valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">5402</td>
</tr>
<tr><td align="left" valign="bottom" width="22.727272727272727%" headers="d0e413 d0e420 "> </td>
<td valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">&nbsp;</td>
<td valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="22.727272727272727%" headers="d0e413 d0e420 ">69 to 91</td>
<td align="left" valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">Secondary Chinese characters</td>
<td align="left" valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">7654</td>
</tr>
<tr><td align="left" valign="bottom" width="22.727272727272727%" headers="d0e413 d0e420 "> </td>
<td valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">&nbsp;</td>
<td valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="22.727272727272727%" headers="d0e413 d0e420 ">92 to C1</td>
<td align="left" valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">Reserved</td>
<td align="left" valign="top" width="27.02020202020202%" headers="d0e417 d0e423 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="22.727272727272727%" headers="d0e413 d0e420 "> </td>
<td valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">&nbsp;</td>
<td valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="22.727272727272727%" headers="d0e413 d0e420 ">C2 to E2</td>
<td align="left" valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">User-defined characters</td>
<td align="left" valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">Up to 6204</td>
</tr>
<tr><td align="left" valign="bottom" width="22.727272727272727%" headers="d0e413 d0e420 "> </td>
<td valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">&nbsp;</td>
<td valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">&nbsp;</td>
</tr>
<tr><td align="left" valign="top" width="22.727272727272727%" headers="d0e413 d0e420 ">E3 to FE</td>
<td align="left" valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">Reserved</td>
<td align="left" valign="top" width="27.02020202020202%" headers="d0e417 d0e423 "> </td>
</tr>
<tr><td align="left" valign="bottom" width="22.727272727272727%" headers="d0e413 d0e420 "> </td>
<td valign="top" width="50.252525252525245%" headers="d0e415 d0e422 ">&nbsp;</td>
<td valign="top" width="27.02020202020202%" headers="d0e417 d0e423 ">&nbsp;</td>
</tr>
<tr><td colspan="3" align="left" valign="top" headers="d0e413 d0e415 d0e417 d0e420 d0e422 d0e423 "> <p>Total number
of IBM-defined characters: 14060</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="section"><p>This code scheme applies to the <span class="keyword">iSeries</span> server, <span class="keyword">System/36™</span>, <span class="keyword">System/38™</span>,
as well as the System/370™ server.
A different DBCS code scheme, called the IBM Personal Computer DBCS code scheme,
is used on the Personal System/55. For details of the IBM Personal Computer DBCS code scheme,
refer to IBM PS/55
publications.</p>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rbal3dbcsf.htm" title="Some languages, such as Chinese, Japanese, and Korean, have a writing scheme that uses many different characters that cannot be represented with single-byte codes. To create coded character sets for such languages, the server uses two bytes to represent each character. Characters that are encoded in two-byte code are called double-byte characters.">Double-byte character set fundamentals</a></div>
</div>
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