[MAME]

Pacman & Chomp Chomp
Namco, 1983

This game runs on the same PCB as Grobda. Some custom chips have
different numbers but probably have the same purpose.

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

Top Board

PCB Number: 22109611 (22109631)
  |---------------------------------|
  |  0773         1500              |
  |  PAL          PAP1-3.3M         |
  |               8148       VOL    |
  |  6809         8148              |
  |                                 |
  |  PAP1_4.1K                      |
  |                               --|
  |                               |
  |                               --|
|--|                                |
|  |                               2|
|  |                               2|
|  |                                |
|  |                               W|
|  |                     5601      A|
|  |                               Y|
|  |                     DSWB       |
|--|                                |
  |RESET_SW                         |
  |  PAP3_3.1D                    --|
  |                               |
  |  PAP3_2.1C                    --|
  |                      5902       |
  |  PAP3-1.1B                      |
  |            PAL       1600  DSWA |
  |  6809                           |
  |                       18.432MHz |
  |---------------------------------|

Notes:
      Namco Customs:
                    0773 - Clock Divider/Sync Generator
                    1500 - Sound Generator
                    5902 - ? (protection?)
                    5601 - ? (protection?)
                    1600 - ?

      6809 clocks: 1.536MHz (both)
      VSync: 60.606060Hz
      22 Way Connector pinout same as Galaga, Pacland, Baraduke, Dragon Buster etc.
      8148 - SRAM 1k x4
      PAP1-3.3M - PROM type 82S129
      All ROMs - EPROM type 2764


Bottom Board

PCB Number: 22109612 (22109632)
  |---------------------------------|
  |                           8148  |
  |                                 |
  |                           8148  |
  |                                 |
  |                  PAP2-4.3L      |
  |                                 |
  |           2016                  |
  |                                 |
  |                                 |
|--|          2016    1200          |
|  |                                |
|  |                                |
|  |          2016                  |
|  |                                |
|  |                                |
|  |                                |
|  |          0433    PAP2_5.3F     |
|--|                                |
  |                   3E            |
  |           2016                  |
  |                       PAP2-5.4E |
  |                                 |
  |           0044    1100     PAL  |
  |                                 |
  |                       PAP2-6.4C |
  |           0773    PAP2_6.3C     |
  |                                 |
  |---------------------------------|

Notes:
      Namco Customs:
                    1200 - Motion Object Position
                    0433 - Motion Object Controller
                    0044 - Video Ram Addresser
                    0773 - Clock Divider/Sync Generator
                    1100 - Datashift Playfield Register

     8148 - SRAM 1k x4
     2016 - SRAM 2x x8

     PAP2-4.3L   \  PROMs type 82S129
     PAP2-5.4E   /
     PAP2-6.4C   -  PROM  type 82S123

     PAP2_5.3F   -  EPROM type 2764
     PAP2_6.3C   -  EPROM type 2732
     3E          -  Empty socket

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