[MAME]

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

IGS PCB NO-0133-2 (Main Board)
|-------------------------------------------------------------------------------------|
|   |----------------------------|   |----------|   |----------------------------|    |
|   |----------------------------|   |----------|   |----------------------------|    |
|                                      PGM_T01S.U29  UM61256    SRM2B61256  SRM2B61256|
| |---------|  33.8688MHz   |----------|                        SRM2B61256  SRM2B61256|
| |WAVEFRONT|               |L8A0290   |   UM6164  UM6164                             |
| |ICS2115V |               |IGS023    |                 PGM_P01S.U20              SW2|
| |(PLCC84) |               |(QFP256)  |                                              |
| |         |               |          |                                              |
| |---------|        50MHz  |----------|                                              |
|    UPD6379  PGM_M01S.U18                             |----------|                   |
|VOL                                                   |MC68HC000 |          74HC132  |
|                                                      |FN20      |   20MHz  74HC132  |
|  UPC844C    |------|                                 |(PLCC68)  |                   |
|             |Z80   |                                 |          |          V3021    |
|             |PLCC44|                  PAL            |----------|                   |
|             |------|    |--------|                                      32.768kHz   |-|
|                         |IGS026  |                                                    |
|                         |(QFP144)|           |--------|                              I|
|                         |        |           |IGS026  |                              D|
|                         |--------|           |(QFP144)|                              C|
|TDA1519A    UM61256 UM61256                   |        |                              3|
|                              TD62064         |--------|                              4|
|                                                                          3.6V_BATT    |
|                                                                                     |-|
|              |----|                                           |-----|     SW3       |
|              |    |               J  A  M  M  A               |     | SW1           |
|--------------|    |-------------------------------------------|     |---------------|


IGS PCB NO-0136 (Riser)
|-------------------------------------------------------------------------------------|
|      |---------------------------------|  |---------------------------------|       |
|      |---------------------------------|  |---------------------------------|       |
|                                                                                     |
|      |---------------------------------|  |---------------------------------|       |
|      |---------------------------------|  |---------------------------------|       |
|                                                                                     |
|   |----------------------------|   |----------|   |----------------------------|    |
|---|                            |---|          |---|                            |----|
    |----------------------------|   |----------|   |----------------------------|

Notes:
      All IC's are shown.

      CPU's
      -----
         68HC000FN20 - Motorola 68000 processor, clocked at 20.000MHz (PLCC68)
         Z80         - Zilog Z0840008VSC Z80 processor, clocked at 8.468MHz (PLCC44)

      SOUND
      -----
         ICS2115     - ICS WaveFront ICS2115V Wavetable Midi Synthesizer, clocked at 33.8688MHz (PLCC84)

      RAM
      ---
         SRM2B256 - Epson SRM2B256SLMX55 8K x8 SRAM (x4, SOP28)
         UM6164   - Unicorn Microelectronics UM6164DS-12 8K x8 SRAM (x2, SOJ28)
         UM61256  - Unicorn Microelectronics UM61256FS-15 32K x8 SRAM (x3, SOJ28)

      ROMs
      ----
         PGM_M01S.U18 - 16MBit MASKROM (TSOP48)
         PGM_P01S.U20 - 1MBit  MASKROM (DIP40, socketed, equivalent to 27C1024 EPROM)
         PGM_T01S.U29 - 16MBit MASKROM (SOP44)

      CUSTOM IC's
      -----------
         IGS023 (QFP256)
         IGS026 (x2, QFP144)

      OTHER
      -----
         3.6V_BATT - 3.6V NICad battery, connected to the V3021 RTC
         IDC34     - IDC34 way flat cable plug, doesn't appear to be used for any games. Might be for
                     re-programming some of the custom IC's or on-board surface mounted ROMs?
         PAL       - Atmel ATF16V8B PAL (DIP20)
         SW1       - Push button switch to enter Test Mode
         SW2       - 8 position DIP Switch (for configuration of PCB/game options)
         SW3       - SPDT switch (purpose unknown)
         TD62064   - Toshiba NPN 50V 1.5A Quad Darlinton Switch; for driving coin meters (DIP16)
         TDA1519A  - Philips 2x 6W Stereo Power AMP (SIL9)
         uPD6379   - NEC 2-channel 16-bit D/A converter 10mW typ. (SOIC8)
         uPC844C   - NEC Quad High Speed Wide Band Operational Amplifier (DIP14)
         V3021     - EM Microelectronic-Marin SA Ultra Low Power 32kHz CMOS Real Time Clock (DIP8)
         VOL       - Volume potentiometer

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