[Jan/24/2004]

Excellent Systems 'Varia Metal'
board ID ES-9309B-B

main cpu 68000 @ 16Mhz

sound oki m6295 (rom VM8)
      es8712    (rom VM7)

program roms VM5 and VM6

graphics VM1-VM4

roms are 23C160 except for code and OKI 27C4001

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[MAME]


Varia Metal
Excellent System Ltd, 1995

PCB Layout
----------
This game runs on Metro hardware.

ES-9309B-B
|--------------------------------------------|
| TA7222   8.U9     DSW1(8)  DSW2(8)         |
|VOL    M6295  1.000MHz                      |
|                   |------------|           |
|          7.U12    |   68000    |           |
|  uPC3403          |------------|           |
|J 640kHz  ES-8712                           |
|A M6585           EPM7032    6B.U18  5B.U19 |
|M       MM1035                              |
|M        26.666MHz  16MHz    62256   62256  |
|A                                           |
|                 |--------|          1.U29  |
|         62256   |Imagetek|                 |
|         62256   |14220   |          2.U31  |
|                 |        |                 |
|                 |--------|          3.U28  |
|                                            |
|                  6264               4.U30  |
|--------------------------------------------|
Notes:
      68000   - clock 16.000MHz
      ES-8712 - ES-8712 Single Channel ADPCM Samples Player. Clock ?? seems to be 16kHz?
                This chip is branded 'EXCELLENT', may be (or not??) manufactured by Ensonic (SDIP48)
      M6295   - clock 1.000MHz. Sample rate = 1000000/132
      M6585   - Oki M6585 ADPCM Voice Synthesizer IC (DIP18). Clock 640kHz.
                Sample rate = 16kHz (selection - pin 1 LOW, pin 2 HIGH = 16kHz)
                This is a version-up to the previous M5205 with some additional
                capabilies and improvements.
      MM1035  - Mitsumi Monolithic IC MM1035 System Reset and Watchdog Timer (DIP8)
      uPC3403 - NEC uPC3403 High Performance Quad Operational Amplifier (DIP14)
      62256   - 32k x8 SRAM (DIP28)
      6264    - 8k x8 SRAM (DIP28)
      TA7222  - Toshiba TA7222 5.8 Watt Audio Power Amplifier (SIP10)
      EPM7032 - Altera EPM7032LC44-15T High Performance EEPROM-based Programmable Logic Device (PLCC44)
      Custom  - Imagetek 14220 Graphics Controller (QFP208)
      VSync   - 58.2328Hz
      HSync   - 15.32kHz
      ROMs    -
                6B & 5B are 27C040 EPROM (DIP32)
                8 is 4M MaskROM (DIP32)
                All other ROMs are 16M MaskROM (DIP42)

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