<?xml version="1.0" ?>

<!DOCTYPE msxconfig SYSTEM 'msxconfig2.dtd'>

<msxconfig>

  <info>

    <manufacturer>Yamaha</manufacturer>

    <code>YIS-805/256</code> <!-- this is on the back plate -->

    <release_year>1986</release_year>

    <description>Japanese MSX2 with 256kB RAM, 60-pin module slot and built in software The Painter and Japanese Word Processor V2.</description>

    <type>MSX2</type>

    <region>jp</region>

  </info>

  <!-- based on bsittler's machine with serial number 1001171.

       This is a Japanese MSX2 and has:

       - A separate JIS-layout Japanese keyboard with hiragana legends and a

         numeric keypad connected with a 13-position DIN-like connector to a

         port on the front of the computer, A reset button and power switch

         also on the front,

       - A built-in 50Hz/60Hz 100VAC power supply including two unswitched AC

         pass-through connectors on the back,

       - A two-prong Japanese-style power cord and a fastener on the back for

         electrical grounding,

       - An 8-pin DIN cassette connector on the back,

       - An unused rear case opening covered by a built-in extra panel (not

         intended to be user-removable; this covers what would be the special

         expansion slot 3-1 in the related YIS-805/128 model),

       - An RCA-style connector for Japanese RF television output on the back

         with a selector switch for determining the channel (1 or 2),

       - Dual RCA-style connectors on the back for monaural audio output and

         NTSC composite video output,

       - An 8-pin DIN connector on the back for RGB video output,

       - Two general-purpose connectors on the front,

       - A built-in Toshiba-style JIS Level 1 Kanji ROM accessible via I/O

         ports (but apparently no Kanji BASIC support apart from PUT KANJI, and

         the I/O ports are mirrored such that applications expecting JIS Level

         2 Kanji will instead get JIS Level 1 Kanji from the corresponding ROM

         offset),

       - Internally expanded slots 0 and 3,

       - An RS-232C serial interface in slot 0-1 with a 25-position D connector

         on the back with RS-232C BASIC (including e.g. _COMHELP/CALL COMHELP

         and _COMTERM/CALL COMTERM),

       - The MSX2 Sub ROM and Disk ROM and Memory-mapped FDC in slot 0-2

         connected to two built-in 2DD floppy disk drives on the front,

       - Two front-facing cartridge slots (slot 1 and slot 2),

       - Graphics software called The Painter invoked by _PAINTER/CALL PAINTER

         in internal slot 3-0,

       - Japanese-language word processing software from Yamaha called

         日本語ワードプロセッサ (Nihongo Word Processor, i.e. "Japanese Word

         Processor") invoked by _JWP/CALL JWP in internal slot 3-1 using more

         or less the same memory mapping scheme as Yamaha's SKW-01 except that

         the main ROM is 48KB and there is no memory-mapped Kanji font ROM (it

         uses the I/O-mapped Toshiba-style JIS Level 1 Kanji ROM instead),

       - A 256KB memory mapper in internal slot 3-2 (8x Fujitsu MB81464-12

         DRAM),

       - 128 kB VRAM (4x Fujitsu MB81464-12),

       - A Yamaha-style 60-pin module slot on the right-hand side as slot 3-3

         (in mine there was a Yamaha SFG-05 FM Sound Synthesizer Unit II), and

       - A Sharp LH0080A Z80-CPU-D.

  -->

  <CassettePort/>

  <devices>

    <Kanji id="Kanji ROM">

      <rom> <!-- Toshiba TC531000P 0071 -->

        <filename>yis805-256_kanjifont.rom</filename>

        <sha1>db03211b7db46899df41db2b1dfbec972109a967</sha1>

      </rom>

      <io base="0xD8" num="2" type="O"/>

      <io base="0xD9" num="1" type="I"/>

      <io base="0xDA" num="2" type="O"/> <!-- mirror 1 -->

      <io base="0xDB" num="1" type="I"/> <!-- mirror 1 -->

      <level_2_via>only_level_1</level_2_via> <!-- checked by kanjitest v2.x on bsittler's, S/N 1001171 -->

    </Kanji>

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

      <sramname>yis805-256_s1985.sram</sramname>

    </S1985>

    <primary slot="0">

      <secondary slot="0">

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

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

          <rom>

            <!-- Confirmed by ROM IC dump: PCB NEP-14D XA888B0, position IC320, label XA904B0 -->

            <sha1>609dbcbd2add28137e5c459d34cdb8012c8a1535</sha1>

            <filename>yis805-256_basic-bios2.rom</filename>

          </rom>

        </ROM>

      </secondary>

      <secondary slot="1">

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

          <!-- Supports RS-232C BASIC `_COMHELP`/`CALL COMHELP`,

               `_COMTERM`/`CALL COMTERM`, etc. -->

          <rom>

            <!-- Confirmed by ROM IC dump: PCB NEP-14D XA890B0, position IC511, label XA980C0 -->

            <filename>yis805-256_rs232c.rom</filename>

            <sha1>1cba8232f3aa7240149c50db25c230fd0df93f00</sha1>

          </rom>

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

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

        </MSX-RS232>

      </secondary>

      <secondary slot="2">

        <ROM id="MSX Sub ROM">

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

          <rom>

            <filename>yis805-256_IC328.rom</filename>

            <sha1>5d04cfc0ee49aa012068a7050c4d912f402c08a7</sha1>

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

          </rom>

        </ROM>

        <WD2793 id="Memory Mapped FDC">

          <connectionstyle>National</connectionstyle>

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

          <rom>

            <filename>yis805-256_IC328.rom</filename>

            <sha1>5d04cfc0ee49aa012068a7050c4d912f402c08a7</sha1>

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

          </rom>

          <drives>2</drives>

        </WD2793>

      </secondary>

    </primary>

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

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

    <primary slot="3">

      <secondary slot="0">

        <!-- The Painter, drawing software invoked by `_PAINTER`/`CALL PAINTER` -->

        <!-- NOTE: this is actually implemented using two ROM IC's:

             0x0000-0x08000: PCB NEP-14D XA888B0, position IC332, label XA911C0

             0x8000-0x10000: PCB NEP-14D XA888B0, position IC336, label XA912C0

        <ROM id="The Painter (Page 0/1)">

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

          <rom>

            <sha1>622ba75c587cc9c6b6aebb54ee4bf3653c49de36</sha1>

            <filename>yis805-256_painter_page01.rom</filename>

          </rom>

        </ROM>

        <ROM id="The Painter (Page 2/3)">

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

          <rom>

            <sha1>b72e2d4e29df14549e467a12e815795b152bf8fa</sha1>

            <filename>yis805-256_painter_page23.rom</filename>

          </rom>

        </ROM>

          -->

        <!-- Concatenation of the above halves -->

        <ROM id="The Painter">

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

          <rom>

            <sha1>41e056e33ee4f548f6af30257717bc40e3cf8238</sha1>

            <filename>yis805-256_painter.rom</filename>

          </rom>

        </ROM>

      </secondary>

      <secondary slot="1">

        <!--

            Apparently in the related YIS-805/128 model this slot is a

            rear expansion port with a specific connector, but here in

            YIS-805/256 it's blocked by a cover and used internally

            for version 2.0 of Yamaha's `日本語ワードプロセッサ`

            (Nihongo Word Processor, i.e. "Japanese Word Processor"),

            invoked by `_JWP`/`CALL JWP`.

            It is similar to Yamaha's SKW-01 Kanji Word Processor Unit, except:

            - The software has been updated to version 2.0 with some

              visible improvements like kana voicing marks already

              sharing a character cell with the base kana character

              during input editing phase.

            - Floppy disk support has been added.

            - It is installed internally, leaving the module slot free

              for SFG-05 or other Yamaha-style modules.

            - There is additional 16KB ROM in page 2.

            - There is no memory-mapped Kanji ROM, since it uses the

              Toshiba-style I/O port mapping for the JIS level 1 Kanji ROM instead.

        -->

        <YamahaSKW01 id="Kanji Word Processor v2">

          <mem base="0x0000" size="0xC000"/>

          <rom id="main">

            <!-- 0x0000-0x8000: PCB NEP-14D XA890B0, position IC513, label XA977C0

                 0x8000-0xC000: PCB NEP-14D XA890B0, position IC512, label XA978C0

                 Live register values from 0x7FC0..0x7FCF are replaced by 0x00, as confirmed by the maskROM dump: -->

            <sha1>e1fbe1bdc76b0c81d5652655731fe9007cf600f6</sha1>

            <filename>yis805-256_jwp2_main.rom</filename>

          </rom>

          <rom id="data">

            <!-- Confirmed by ROM IC dump: PCB NEP-14D XA890B0, position IC510, label XA979A0 -->

            <sha1>0247d1ea0e757255f4470e032655509172c2af21</sha1>

            <filename>yis805-256_jwp2_data.rom</filename>

          </rom>

          <sramname>yis805-256_jwp2.sram</sramname>

          <initialContent encoding="hex">00</initialContent> <!-- observed in bsittler's YIS-805/256 after startup was a rather chaotic pattern, but it seems to be mostly 0x00 based, so let's assume that -->

        </YamahaSKW01>

      </secondary>

      <secondary slot="2">

        <MemoryMapper id="Main RAM">

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

          <size>256</size>

          <initialContent encoding="gz-base64">eJztwQEBAAAAASD/TzNElQAAbwoA3Bnqa/hq</initialContent> <!-- 2kB of 0x00, then 2kB of 0xFF, repeated -->

        </MemoryMapper>

      </secondary>

      <secondary external="true" slot="3"/> <!-- 60-pin module slot, e.g. for SFG-05 -->

    </primary>

    <PPI id="ppi">

      <sound>

        <volume>16000</volume>

      </sound>

      <io base="0xA8" num="8"/>

      <keyboard_type>jp_ansi</keyboard_type>

      <has_keypad>true</has_keypad>

      <key_ghosting_sgc_protected>false</key_ghosting_sgc_protected>

      <code_kana_locks>true</code_kana_locks>

    </PPI>

    <VDP id="VDP">

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

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

      <version>V9938</version>

      <vram>128</vram>

    </VDP>

    <PSG id="PSG">

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

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

      <sound>

        <volume>21000</volume>

      </sound>

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

    </PSG>

    <RTC id="Real time clock">

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

      <sramname>yis805-256.cmos</sramname>

    </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>

  </devices>

</msxconfig>