<?xml version="1.0" ?>

<!DOCTYPE msxconfig SYSTEM 'msxconfig2.dtd'>

<msxconfig>

  <info>

    <manufacturer>Canon</manufacturer>

    <code>V-25</code>

    <release_year>1984?</release_year>

    <description>One of the few MSX2's with only 64kB VRAM, making it a very basic MSX2.</description>

    <type>MSX2</type>

    <region>jp</region>

  </info>

  <!-- S-3527 based machine, Zilog Z8400APS, 32k ROM: YAMAHA YM2301, 16k ROM: NEC D23C128EC - thanks to Rudi Westerhof for borrowing me his Canon V-25! -->

  <CassettePort/>

  <devices>

    <PPI id="ppi">

      <sound>

        <volume>16000</volume>

      </sound>

      <io base="0xA8" num="8"/> <!-- S-3527 mirrors -->

      <keyboard_type>jp_jis</keyboard_type>

      <has_keypad>false</has_keypad>

      <key_ghosting_sgc_protected>false</key_ghosting_sgc_protected>

      <code_kana_locks>true</code_kana_locks>

      <graph_locks>false</graph_locks>

    </PPI>

    <VDP id="VDP">

      <version>V9938</version>

      <vram>64</vram>

      <io base="0x98" num="8" type="O"/> <!-- S-3527 mirrors -->

      <io base="0x98" num="8" type="I"/> <!-- S-3527 mirrors -->

    </VDP>

    <PSG id="PSG">

      <type>YM2149</type> <!-- in S-3527 MSX-ENGINE -->

      <sound>

        <volume>21000</volume>

      </sound>

      <io base="0xA0" num="8" type="IO"/> <!-- S-3527 mirrors -->

      <ignorePortDirections>true</ignorePortDirections> <!-- not sure, but guess based on use of Engine IC -->

    </PSG>

    <RTC id="Real time clock">

      <sramname>v-25.cmos</sramname>

      <io base="0xB4" num="2" type="O"/>

      <io base="0xB5" num="1" type="I"/>

    </RTC>

    <PrinterPort id="Printer Port">

      <io base="0x90" num="8" type="IO"/> <!-- S-3527 mirrors -->

      <status_readable_on_all_ports>true</status_readable_on_all_ports> <!-- S-3527 property -->

    </PrinterPort>

    <primary slot="0">

      <ROM id="MSX BIOS with BASIC ROM">

        <rom>

          <filename>v-25_basic-bios2.rom</filename>

          <sha1>0081ea0d25bc5cd8d70b60ad8cfdc7307812c0fd</sha1>

        </rom>

        <mem base="0x0000" size="0x8000"/>

      </ROM>

    </primary>

    <primary external="true" slot="1"/> <!-- side slot -->

    <primary external="true" slot="2"/> <!-- top slot -->

    <primary slot="3">

      <secondary slot="0">

        <ROM id="MSX Sub ROM">

          <rom>

            <filename>v-25_msx2sub.rom</filename>

            <sha1>b8e30d604d319d511cbfbc61e5d8c38fbb9c5a33</sha1>

          </rom>

          <mem base="0x0000" size="0x4000"/> <!-- NO mirroring -->

        </ROM>

      </secondary>

      <secondary slot="2">

        <MemoryMapper id="Main RAM">

          <size>64</size>

          <initialContent encoding="gz-base64">eJxjYBhY8H+AAQAioH+B</initialContent> <!-- ((chr(0) * 128) + (chr(255) * 128)) -->

          <mem base="0x0000" size="0x10000"/>

        </MemoryMapper>

      </secondary>

    </primary>

  </devices>

</msxconfig>