<?xml version="1.0" ?>

<!DOCTYPE msxconfig SYSTEM 'msxconfig2.dtd'>

<msxconfig>

  <info>

    <manufacturer>Sony</manufacturer>

    <code>HB-G900AP</code>

    <release_year>1986</release_year>

    <description>A professional European MSX2 with 512kB RAM, built in disk drive, super impose capability (not emulated), RS-232C interface and MSX-BASIC extension ROM to control laser players through RS-232C.</description>

    <type>MSX2</type>

    <region>eu</region>

    <!-- Note that superimpose is still missing! -->

  </info>

  <CassettePort/>

  <devices>

    <S1985 id="S1985"> <!-- includes 5 bits mapper-read-back -->

      <sramname>hb-g900ap_s1985.sram</sramname>

    </S1985>

    <PPI id="ppi">

      <sound>

        <volume>16000</volume>

      </sound>

      <io base="0xA8" num="8"/> <!-- S-1985 mirrors -->

      <keyboard_type>int</keyboard_type>

      <has_keypad>true</has_keypad>

    </PPI>

    <VDP id="VDP">

      <version>V9938</version>

      <vram>128</vram>

      <io base="0x98" num="8" type="O"/> <!-- S-1985 mirrors -->

      <io base="0x98" num="8" type="I"/> <!-- S-1985 mirrors -->

    </VDP>

    <PSG id="PSG">

      <type>YM2149</type> <!-- in S-1985 MSX-ENGINE -->

      <sound>

        <volume>21000</volume>

      </sound>

      <io base="0xA0" num="8" type="IO"/> <!-- S-1985 mirrors -->

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

    </PSG>

    <RTC id="Real time clock">

      <sramname>hb-g900ap.cmos</sramname>

      <io base="0xB4" num="4" type="IO"/> <!-- S-1985 mirrors -->

    </RTC>

    <PrinterPort id="Printer Port">

      <io base="0x90" num="8" type="IO"/> <!-- S-1985 mirrors -->

      <bidirectional>true</bidirectional> <!-- S-1985 feature (but not used, nor implemented) -->

      <unused_bits>0x00</unused_bits>

    </PrinterPort>

    <primary slot="0">

      <secondary slot="0">

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

          <rom>

            <sha1>0de3c802057560560a03d7965fcc4cff69f8575c</sha1> <!-- Verified on Louthrax's machine -->

            <filename>hb-g900ap_basic-bios2.rom</filename>

          </rom>

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

        </ROM>

      </secondary>

      <secondary slot="1">

        <ROM id="MSX Sub ROM">

          <rom>

            <sha1>3288894e1be6af705871499b23c85732dbc40993</sha1> <!-- Verified on Louthrax's machine -->

            <filename>hb-g900ap_msx2sub.rom</filename>

          </rom>

          <mem base="0x0000" size="0x4000"/>

        </ROM>

        <WD2793 id="Memory Mapped FDC">

          <connectionstyle>Sony</connectionstyle>

          <motor_off_timeout_ms>4000</motor_off_timeout_ms>

          <drives>1</drives>

          <rom>

            <sha1>12f2cc79b3d09723840bae774be48c0d721ec1c6</sha1> <!-- Verified on Louthrax's machine -->

            <filename>hb-g900ap_disk.rom</filename>

          </rom>

          <mem base="0x4000" size="0x8000"/>

        </WD2793>

      </secondary>

      <secondary slot="2">

        <!-- this built in RS-232C seems to be identical to Sony HBI-232 -->

        <MSX-RS232 id="Sony MSX RS-232">

          <ram>true</ram>

          <memorybasedio>true</memorybasedio>

          <rom>

            <sha1>b2776159a7b92d74308b434a6b3e5feba161e2b7</sha1> <!-- Verified on Louthrax's machine -->

            <filename>hb-g900ap_rs232.rom</filename>

          </rom>

          <io base="0x80" num="8"/>

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

        </MSX-RS232>

      </secondary>

      <secondary slot="3">

        <ROM id="Video Utility">

          <rom>

            <sha1>6bb18cd2d69f124ad0c7c23a13eb0d2139037696</sha1> <!-- As found on Louthrax's machine, most (but not all) of the 2nd half is bogus. -->

            <filename>hb-g900ap_video-utility.rom</filename>

          </rom>

          <mem base="0x4000" size="0x4000"/>

        </ROM>

      </secondary>

    </primary>

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

    <primary external="true" slot="2"/>

    <primary slot="3">

      <secondary slot="0">

        <MemoryMapper id="Main RAM">

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

          <size>512</size>

        </MemoryMapper>

      </secondary>

    </primary>

  </devices>

</msxconfig>