/*

      ----|     10/WAY CONN     |--------------------------------|
      |   |---------------------|                       |------| |
     _|                                                 | U23  | |
    |_|  [  U1  ][  U5  ] |--------------|   |-----|    | TDA  | |
    |_|                   | U8 IGS S2102 |   | U17 |    | 1020 | |
    |_|          [  U6  ] |--------------|   |-----|    |------| |
    |_|                   |--------------|                       |
    |_|                   | U9 SP V100I  | [   U15   ]   LM7805  |
 3  |_|                   |--------------| |-------------------| |
 6  |_|       |----------|                 |  U16 Z8018008PSC  | |
 W  |_|       | U4       | [ TAR97 U10-1 ] |-------------------| |
 A  |_|       | IGS025   |                    OSC                |
 Y  |_|       | S_TARZAN |     [   U13   ] 16.0Mhz [ TAR97 U20 ] |
    |_|       |          |                                       |
 C  |_|       |----------|                      [ U18 ]  [ U20 ] |
 O  |_|                    |-----------|                         |
 N  |_|                    | U12       |                   SW1   |
 N  |_|                    | IGS 031   |                         |
    |_|                    | F00030142 |                   SW2   |
    |_|                    |           |        [ U19 ]          |
    |_|                    |-----------|                   SW3   |
    |_| |----------------|                22.00 Mhz              |
    |_| | U2  TBM27C4096 |                                       |
    |_| |----------------|   [ R20 Ohm 5W ]        Battery       |
    |_| |----------------| |----------------------| (---)  Reset |
      | | U3  C0057209   | | U11 IGST2105 CG V110 | (3.6)  SW4   |
      | |----------------| |----------------------| (---)    \   |
      |----------------------------------------------------------|

      U1,U5,U6  ULN2004A			   SW4 1pos switch for reset
            U2  TBM TB27C4096          Sw1-2-3  8x2 DSW
            U4  IGS025 (protection?)
            U8  IGS S2102 SP V102 1P1327A6 C000538
           U11  IGS T2105 CG V110 1P1379C1 S000938
           U12  IGS031 F00030142 (graphic array?)
           U17  K668 = Oki M6295 (QFP44). Clock 1.000MHz [8/8]. pin7 = High
           U16  Zilog Z8018008PSC Z180 MPU
           U18  DN74LS14N
           U19  SN74HC132N
           U20  HD74LS161AP
   U10-1,U20-1  PALCE22V10H

*/