file   : readme.txt
author : rtw
created: 2024-01-22

MIRAI YOSOU STUDIO, (C) SEGA 2000, NAOMI M2/M3 Cart

This cart does not work properly it seems like there
is a broken trace between the EPROM and the buffers. 
However we can easily read out the EPROM using standard tools.

Then we can list the ROM table.

+--------+----------+-------+-------+
|  ROM   |   Type   |  Byte |  Word |
+--------+----------+-------+-------+
|    0   |  16 MBit |  0000 |  0000 |
|    1   |  64 MBit |  fdb2 |  7444 |
|    2   |  64 MBit |  13f0 |  27a3 |
|    3   |  64 MBit |  ddc8 |  76b9 |
|    4   |  64 MBit |  7406 |  5403 |
|    5   |  64 MBit |  eea6 |  24cf |
|    6   |  64 MBit |  c86c |  a286 |
|    7   |  64 MBit |  b932 |  621d |
|    8   |  64 MBit |  50a2 |  5d8b |
|    9   |  64 MBit |  b831 |  97b5 |
|   10   |  64 MBit |  772d |  642c |
|   11   |  64 MBit |  c675 |  aca0 |
|   13   |  64 MBit |  d528 |  5161 |
|   14   |  64 MBit |  0253 |  bbb1 |
|   15   |  64 MBit |  a0f6 |  24cb |
|   16   |  64 MBit |  bef2 |  da24 |
|   17   |  64 MBit |  27ed |  7604 |
|   18   |  64 MBit |  fcc0 |  ba0b |
+--------+----------+-------+-------+

Note that ROM 12 is empty and not shown in the ROM list. 

The serial number on the stickers on the PCB match the
serial number stored in the secure FLASH.

The dump has been validated against the ROM TEST checksums.

From MetalliC:

It clearly uses IO 837-13844 I/O with DIPSW 4 and 5 ON (enable touch screen support
via standard JVS commands and printer via custom commands 0x74/75)

Gameplay video:

https://www.youtube.com/watch?v=CvzYkVlkD6w

Cart type      : M2/M3
Game Id        : BCB0
Protection key : 0x281a6263

Name                                 Size     CRC32 
--------------------------------------------------------
mirai_yosou_studio_cart.png          6043884  0x0f58f39b
mirai_yosou_studio_pcb_1.png         5745324  0x0c55faf3
mirai_yosou_studio_pcb_2.png         6059758  0x79da4d2a
mirai_yosou_studio_rom_test.jpg      1674231  0xd99a9e02
mirai_yosou_studio_emu_rom_test.png    37577  0x9c55e07b
mirai_yosou_studio_emu_title.png      125993  0xb947f4bb

Name                Size     CRC32       Chip Type
--------------------------------------------------
epr__a__23419.ic22  2097152  0x8639d1e5  27C160 
rom1.ic1s           8388608  0x5f11a3ec  28F640                 
rom2.ic2s           8388608  0x0d46bfe5  28F640                 
rom3.ic3s           8388608  0xac5c846e  28F640                 
rom4.ic4s           8388608  0x6cb2153f  28F640                 
rom5.ic5s           8388608  0xfd70ef17  28F640                 
rom6.ic6s           8388608  0xe52afefa  28F640                 
rom7.ic7s           8388608  0x976b929d  28F640                 
rom8.ic8s           8388608  0x7914b241  28F640                 
rom9.ic9s           8388608  0x2c50b20c  28F640                 
rom10.ic10s         8388608  0xa4b8fbc8  28F640                 
rom11.ic11s         8388608  0x8a7dbf32  28F640                 
rom12.ic12s         8388608  0x3de23e27  28F640                 
rom13.ic13s         8388608  0x523a20f9  28F640                 
rom14.ic14s         8388608  0x5ddf6931  28F640                 
rom15.ic15s         8388608  0x1ef1cbed  28F640                 
rom16.ic16s         8388608  0x82fa259a  28F640                 
rom17.ic17s         8388608  0x6c1207d4  28F640                 
rom18.ic18s         8388608  0xeb8201b0  28F640                 
sflash.bin              132  0x44c05f0c  X76F100 serial EEPROM  

supplier: Jorge Valero
credits: Jorge Valero, MetalliC, rtw
dumper: rtw