[MAME]

Hidden Catch 3
Eolith, 2000

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

GRADATION J. VER 3.05
|-------------------------------------------------|
|    TDA1519 VOL    KM6161002 KM6161002  IS61C1024|
|            VOL                                  |
|         DA1311    KM6161002 KM6161002  IS61C1024|
|     24MHz       QS1001A  DSW(4)                 |
|          QS1000              DSW(4)    IS61C1024|
|            U107   U97  EV0514-001               |
|J                                       IC61C1024|
|A                     14.31818MHz                |
|M  SERVICE_SW                        E1-32N      |
|M  TEST_SW                                       |
|A     93C66                        50MHz         |
|                                                 |
|              |---------Sub Board (above)--------|
|           GMS90C32                         7705 |
|       12MHz  |                                  |
|              |                                  |
|           U108    U41   U39   U37   U35    U43  |
|      U111    | U42   U40   U38   U36   U34      |
|              |                                  |
|--------------|----------------------------------|
Notes:
      E1-32N       - Hyperstone E1-32N CPU, clock 50.000MHz (QFP160)
      GMS90C32     - Hyundai GMS90C32 MCS-51 Compatible Microcontroller w/8k internal EPROM, clock 12.000MHz (PLCC44)
                     Note EA (External Access Enable on pin35) is LOW, thus it is configured to use the External EPROM at U111.
                     The chip is configured by placing a small smt zero Ohm resistor across 2 pads adjacent to pin35. So a romless
                     condition can be easily checked by looking to see if the resistor is present. If the resistor is not present,
                     EA is configured to HIGH and the chip is using it's internal ROM.
      IS61C1024    - ISSI 128k x8 High Speed CMOS Static RAM (SOJ32)
      KM6161002    - Samsung 64k x16 Ultra High Speed CMOS Video Static RAM (SOJ44)
      TDA1519      - Audio Power AMP
      QS1000       - QDSP QS1000 AdMOS 9638R, Wavetable Audio chip, clock input of 24.000MHz (QFP100)
                     see http://www.hwass.co.kr/product.htm for more info on QS100x chips.
      QS1001A      - QDSP QS1001A 512k x8 MaskROM (SOP32)
      EV0514-001   - Custom Eolith IC (QFP100)
      VSync        - 60Hz
      HSync        - 15.64kHz

      Main board has ROMs populated at U111, U108, U43, U107 & U97 ONLY and locations from U34 to U42 do not have sockets populated.
      Sub Board contains 16x MX29F1610 16M FlashROMs. The filename is the location stamped on the PCB (SOP44)

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