BIOS revision Boot Rom on retail Dreamcast

Discussion in 'Sega Dreamcast Development and Research' started by DcDev, Mar 18, 2016.

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  1. DcDev

    DcDev Newly Registered

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    I am interresting on listing and find dumps of the different BIOS revision Boot Rom on retail Dreamcast (not the DevKits).

    For the moment i only have those informations and dumps :

    1.004
    mpr-21068.ic501
    CRC(5454841f)
    SHA1(1ea132c0fbbf07ef76789eadc07908045c089bd6)

    1.01c
    mpr-21871.ic501
    CRC(2f551bc5)
    SHA1(1ede8d5be49116a4c6f3fe0961175469537a0434)

    1.01d
    mpr-21931.ic501
    CRC(89f2b1a1)
    SHA1(8951d1bb219ab2ff8583033d2119c899cc81f18c)

    1.022
    mpr-23588.ic501
    CRC(786168f9)
    SHA1(ba8bbb90fdb29525f24f17055dc2c7b2d7674437)

    It seems to have more BIOS :

    MPR-21086 ? (VA0 NTSC-J 3010)

    MPR-21933 ? (VA0 US)

    MPR-21871 ?

    MPR-21933 ?

    MPR-23588 ? (JPN Sakura Wars Model)

    I try to find missing BIOS dump file that i have not on my list.

    If someone could help me, it will be very nice.

    Regards.
     
    DcDev, Mar 18, 2016 Report
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  2. Shane McRetro

    Shane McRetro Blast Processed Since 199X

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    Awww, it's my old friend 1.01c (MPR-21871)! :)
    You've got that listed there twice, apart from that - sorry! I have no help!
     
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  3. DcDev

    DcDev Newly Registered

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    Thanks, you're right !
    So after correction : it seems (for the moment) MPR-21086 (VA0 NTSC-J 3010) and MPR-21933 (VA0 US) are missing.
    If number id matters, MPR-21086 should be between 1.004 and 1.01c and MPR-21933 should be between 1.01d and 1.022.
     
    DcDev, Mar 19, 2016 Report
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  4. madsheep

    madsheep Peppy Member

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    Last edited: Mar 19, 2016
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  5. DcDev

    DcDev Newly Registered

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    Well,

    Perhaps MPR-21086 could be in HKT-0120 - Sega Katana Development Box (Set 5.24) as a v1.011c BIOS or in HKT-3010 - NTSC-J Dreamcast (VA0).

    The CRC(34DA5C88) suits to one of this case .....
     
    Last edited: Mar 19, 2016
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  6. MetalliC

    MetalliC Spirited Member

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    this is selfmade hack of v1.01d with Chinese translation added. doesn't work on real console.
    have no idea why people call it "EU".

    Katana Dev.Boxes have FlashROM (its "regular" boot rom) and EEPROM (hardware checker).
    there no MaskROMs, so there cant be any MPR-xxxxx labeled boot roms

    PS: interesting topic with some info about different DC mobo revisions and boot roms
    http://dcemulation.org/dumpcast/viewtopic.php?t=499

    it seems this BIOS wasn't released on public, right ? too bad :(
     
    MetalliC, Mar 19, 2016 Report
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