file   : readme.txt
author : rtw
created: 2021-08-10
version: 1.1.1

ANPANMAN POPCORN KOUJOU 2, (C) SEGA CORPORATION 2002

This is a popcorn vending machine where you can interact with a
game while you wait for your real popcorn to pop. 

The game itself runs on a NAOMI and is controlled by a wheel. The
faster you spin the wheel the more virtual popcorn you pop.

The NAOMI is housed in a large metal box with external connectors
for power and the popcorn interface. 

Inside the box we find:

. NAOMI CRX (CN8 RS422 has 3V3 UART instead of RS422)
. 838-14367 LED CONTROL BD
. 839-1204-01 SERIAL I/F BD CRX
. 839-1204 SERIAL I/F BD
. 837-13844-02 I/O CONTROL BD (JVS Interface)

See the directory: ./images for details.

From the wiring diagram it looks like we are missing: 

. 838-14403 Popcorn Vendor Control BD
. 2 x 838-14245 MAPLE/RS232C CONVERT BD, these boards
  do not have a ROM. The NAOMI uploads the firmware.
  These boards are connected to the NAOMI MAPLE bus.
. 2 x 610-0760 (Maxell ME-PM01-RA-SG(BK) RFID reader) these plug
  into the 838-14245 boards.

See the directory: ./doc for details.

Here is a video of the machine in action:

https://www.youtube.com/watch?v=7fy3xWBgRMA

This is a standard M1 cart. On M1 carts data is stored as 32-bit words,
however each of the MASK ROMs contain only 16 bits of the 32 bit word. 
In order for the dump to truthfully represent what is present on the 
PCB I have split the data across each pair of chips. This is the same
which has been done for gram2000 in the NAOMI driver. 

The split algorithm is as follows:

copy /b a1000000.bin+a1800000.bin merge.bin

do
get 1 byte from merge.bin and write it to nn.ic17s
get 1 byte from merge.bin and write it to nn.ic17s
get 1 byte from merge.bin and write it to nn.ic18 
get 1 byte from merge.bin and write it to nn.ic18 
while !eof in merge.bin

This dump has been verified against the cart ROM test. do not
be alaarmed even if you do not see the test of IC11. It has 
been disabled in the header.

Protection key : 0x2f68b225 
FPGA Id        : 0x4655 

Fun fact: The game id is: 0BFU, the FPGA id is: FU

Name                                    Size     CRC32
-----------------------------------------------------------
anpanman_popcorn_koujou_2_rom_test.jpg  3310976  0xbf2e6412
anpanman_popcorn_koujou_2_cart.png      6243169  0xbcefa0d0
anpanman_popcorn_koujou_2_pcb_1.png     6128594  0x017dc085
anpanman_popcorn_koujou_2_pcb_2.png     5880161  0x4fee86fd

NAOMI CART
----------

Name             Size     CRC32       Chip Type
-----------------------------------------------
epr-24049b.ic11  4194304  0x7c810603  27C322
opr-24038.ic17s  8388608  0x7addc59b  STM59PV640  
opr-24039.ic18   8388608  0x97e16543  STM59PV640  
opr-24040.ic19s  8388608  0x59a8d850  STM59PV640  
opr-24041.ic20   8388608  0xd0e6dfd0  STM59PV640  
sflash.bin           132  0xbd5d61f3  AT25010 serial EEPROM

LED CONTROL BD
--------------

Name            Size    CRC32       Chip Type
---------------------------------------------
epr-24019a.ic2  524288  0x47d6f064  M27C4002

supplier: Darksoft
credits: Darksoft, Jorge Valero, MetalliC, rtw
dumper: rtw
manual scan: konosuke