[MAME]

Mahjong The Dai Chuuka Ken (China Version)
Dynax, 1995

PCB Layout
----------

D11107218L1 DYNAX INC. NAGOYA JAPAN
|-----------------------------------------------------|
|10-WAY              18-WAY                  1    5.5V|
|                               6606         x        |
|   MB3712  VOL  358                                  |
|                358                                  |
|                               16MHz        43256    |
|                 6868A                               |
|              95101            Z84C015      2        |
|                                                     |
|2                                              3631  |
|8                                                    |
|W                                                    |
|A                                         PAL        |
|Y                     28.322MHz      PAL             |
|                                                     |
|                         |---------|                 |
|                         |NAKANIHON|                 |
|                         |70C160F009   3       4     |
|                 44C251  |         |                 |
|                 44C251  |         |   5       6     |
| DSW1     DSW2   44C251  |---------|                 |
| DSW3     DSW4   44C251                7       8     |
|-----------------------------------------------------|
Notes:
      PCB uses common 10-way/18-way and 28-way Mahjong pinouts
      5.5V    - Battery
      6606    - Compatible to M6295 (QFP44)
      6868A   - compatible to YM2413 (DIP18)
      3631    - Unknown DIP18 chip (maybe RTC?)
      Z84C015 - Toshiba TMPZ84C015BF-6 Z80 compatible CPU (clock input 16.0MHz)
      44C251  - Texas Instruments TMS44C251-12SD 256k x4 Dual Port VRAM (ZIP28)
      95101   - Winbond 95101, compatible to AY-3-8910 (DIP40)
      43256   - NEC D43256 32k x8 SRAM (DIP28)
      70C160F009 - Custom Dynax graphics generator (QFP160)
      All DIPSW's have 10 switches per DIPSW
      All ROMs are 27C040
                          1   - Sound samples
                          2   - Main program
                          3,4 - Graphics
                          5-8 - unused DIP32 sockets

      The same PCB is used with 'Mahjong Zhong Hua Er Nu', with ROM locations
      as follows....
                    1 - D1111-A.1B
                    2 - D12102.5B
                    3 - D12103.11C
                    4 - D12104.11A
                    5 - D12105.12C
                    6 - D12106.12A
                    7 - D12107.13C
                    8 - D12108.13A

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