[Apr/04/2004]

Heavy Smash
Data East, 1993

PCB Layout

DE-0385-2  DEC-22VO
|----------------------------------------------|
|                      28MHz  DE52             |
|           MBG-04.13J               MBG-02.11A|
|  M6295(1) MBG-03.10K  VL-02        MBG-01.10A|
|  M6295(2)                   DE153  MBG-00.9A |
|                                              |
|                                              |
|J                                             |
|A               93C46.8K                      |
|M                                             |
|M                            DE141            |
|A                                VL-01 VL-00  |
|                  6264                        |
|      DE153       6264                        |
|                                              |
|                                              |
|TEST_SW                                 DE156 |
|           LP01-2.3J  6264   6264             |
|           LP00-2.2J  6264   6264             |
|                                              |
|----------------------------------------------|

Notes:
      - CPU is unknown. It's chip DE156. The clock input is 7.000MHz on pin 90
        It's thought to be a custom-made encrypted ARM7-based CPU.
        The package is a Quad Flat Pack and has 100 pins.
      - OKI M6295(1) clock: 1.000MHz (28 / 28), sample rate = 1000000 / 132
      - OKI M6295(2) clock: 2.000MHz (28 / 14), sample rate = 2000000 / 132
      - VSync: 58Hz
      - VL-00 (PAL16R8), VL-01 (PAL16L8), VL-02 (PAL16R6)
      - On the Data East boards of this type (using DE156) that use an EEPROM, the EEPROM contains the
        country/region code also. It has been proven by comparing the dumps of Osman and Cannon Dancer.... 
        they were identical and there are no region jumper pads on the PCB. Therefore the EEPROM must
        hold the region code.
        
      ROMs
      ----
      - MBG-00, MBG-01, MBG-02  - 16M MASK  Graphics
      - LP00, LP01              - 27C4096   Main program
      - MBG-03                  - 4M MASK   Sound (samples, linked to M6295(1)
      - MBG-04                  - 16M MASK  Sound (samples, linked to M6295(2)
      - 93C46                   - 128 bytes EEPROM (Note! this chip has identical halves and fixed
                                                    bits, but the dump is correct!)

-

[May/24/2006]

Heavy Smash (Asia version -4)  

Data East 1993  

CPU   
ROMs   
Note a diff has already been submitted to mamedev  
Not tested  

Dumped 24/05/2006 

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