<?xml version="1.0" ?>
<!DOCTYPE msxconfig SYSTEM 'msxconfig2.dtd'>
<msxconfig>

  <info>
    <manufacturer>Nikko</manufacturer>
    <code>PC-70100</code>
    <release_year>1988?</release_year>
    <description>Prototype MSX?</description>
    <type>MSX</type>
    <region>jp</region>
  </info>

  <!-- 
       See https://www.msx.org/forum/msx-talk/general-discussion/nikko-made-msx-computer

       Thanks a lot to Takamichi Suzukawa for the information and pictures.

       Note: has no GRAPH/KANA keys, CAPS + < + / acts like a kana/code toggle

       MSX-ENGINE: Toshiba T7937A
  -->

  <CassettePort/>

  <JoystickPorts>A</JoystickPorts> <!-- only 1 joystick port -->

  <devices>

    <T7937 id="T7937">
      <subtype>A</subtype>
    </T7937>

    <PPI id="ppi">
      <sound>
        <volume>16000</volume>
      </sound>
      <io base="0xA8" num="4"/>
      <keyboard_type>jp_jis</keyboard_type>
      <has_keypad>false</has_keypad>
      <key_ghosting_sgc_protected>false</key_ghosting_sgc_protected>
      <code_kana_locks>false</code_kana_locks>
      <graph_locks>false</graph_locks>
    </PPI>

    <VDP id="VDP">
      <version>T7937APAL</version>
      <io base="0x98" num="2"/>
    </VDP>

    <PSG id="PSG">
      <type>AY8910</type>
      <sound>
        <volume>21000</volume>
      </sound>
      <io base="0xA0" num="4" type="IO"/>
      <ignorePortDirections>true</ignorePortDirections> <!-- not sure, but guess based on use of Engine IC -->
    </PSG>

    <PrinterPort id="Printer Port">
      <io base="0x90" num="2"/>
    </PrinterPort>

    <primary slot="0">
      <RAM id="Main RAM">
        <mem base="0xC000" size="0x4000"/>
        <initialContent encoding="hex">FF00</initialContent>
      </RAM>
      <ROM id="MSX BIOS with BASIC ROM">
        <rom>
          <filename>pc-70100_basic-bios1.rom</filename>
          <sha1>54ffdd9daaf5f9ae90adb627186a405dffd999f6</sha1>
        </rom>
        <mem base="0x0000" size="0x8000"/>
      </ROM>
    </primary>

    <primary external="true" slot="1"/>

  </devices>

</msxconfig>
