[MAME]

Mahjong Crystal 7
Dynax, 1990

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

D4005208L1-1
|------------------------------------------------------------------|
|    VR1       3.579545MHz  3-8912    22MHz|------|        4001.1A |
|    VR2   358                             |TMPZ84|        4002.3A |
|               YM2413    6845             |C015-6|                |
|          358  384kHz                     |------|                |
|               M5205                                              |
|                                                          5563    |
|M                                                         5.5V_BAT|
|A            6264                                                 |
|H                                                                 |
|J            6264                PAL         PAL                  |
|O                                                                 |
|N                                                                 |
|G  DSW1(8)                                                        |
|2  DSW2(8)                                                        |
|8  DSW3(8)                                                        |
|   DSW4(8)                                |------------ 4011.11A -| |-ROM-sub-board-D23SUB--|
|                                          |             4012.13A  | |                       |
|                                          |             4013.14A  | | 4003.1B   4007.1A     |
|                                          |             4014.15A-|| |                    |-||
|                       HM53461  PAL       |                    | || | 4004.2B   4008.2A  | ||
|               HM53461 HM53461            |                    | || |                    | ||
|               HM53461 HM53461            |                    | || | 4005.3B   4009.3A  | ||
|               HM53461 HM53461            |                    |-|| |                    |-||
|               HM53461   |----------|     |                       | | 4006.4B   4010.4A     |
|                         |    %     |     |                       | |                       |
|                         |----------|     |                       | |                       |
|------------------------------------------|-----------------------| |-----------------------|
Notes:
      TMPZ84C015-6    - Toshiba TMPZ84C015F-6 (QFP100)
                        XTAL1- 11.000MHz [22/2], XTAL2- 11.000MHz [22/2], CLKIN- 5.500MHz [22/4], CLKOUT- 5.500MHz [22/4]
      %               - SDIP64 IC, surface scratched off. This is most likely a Dynax NL-00x graphics generator or similar.
      AY-3-8912 clock - 1.375MHz [22/16]
      YM2413 clock    - 3.579545MHz
      M5205 clock     - 384kHz
      VSync           - 60Hz
      HSync           - 15.87kHz

-