[Dec/07/2001]


Space Bugger
Game-A-Tron 1981


                       U20 U21 U22
                   U32 U33 U34 U35
             6MHz

          8085   8156
                       2114 2114 2114 2114
                       2114 2114 2114 2114

Main

-------


            GFX

            2114 2114 2114 2114

12.440MHz

Graphics PCB

-------



                         76489  76489


Sound PCB

-------

-

[MAME]

Space Bugger
Game-A-Tron, 1981



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

CPU
2.81
GAT
  |------------------------------------------------------|
  |           74LS393                                    |
  |                         74LS00    TIP41A          CN1|
  |                                                      |
|-|           74LS32        74LS00    74LS161            |
|                                                        |
|                                     74LS10          CN2|
|    74LS139  74LS240                                    |
|                     |-----------|                      |
|    74LS240  74LS244 |  TMP8085  |   74LS04             |
|                     |-----------|6MHz                  |
|    74LS244  74LS373  74LS244  DSW(7)    74LS04         |
|                     |-----------|                      |
|    uPB8216  uPB8216 |  TMP8156  |                      |
|                     |-----------|                      |
|    2114  2114   74LS244  U32                           |
|                                                        |
|    2114  2114   74LS32   U33   U20                     |
|-|                                                      |
  |  2114  2114   74LS138  U34   U21                     |
  |                                                      |
  |  2114  2114   74LS138  U35   U22                     |
  |------------------------------------------------------|
Notes:
      All IC's shown.
      uPB8216 - NEC uPB8216 4 Bit Bi-directional Bus Driver
      2114    - Hitachi HM572114P-4 1k x4 SRAM
      TMP8156 - RIOT, 256 bytes Static RAM with I/O Ports and Timer
      TMP8085 - 8085 CPU, clock 3MHz [6/2]
      CN1/2   - 10 pin connectors
      U20-U22 - Hitachi HM462716G 2k x8 EPROMs
      U32-U35 /

      Note, this PCB plugs into a motherboard containing connectors. There is
      also a sound and graphics board that plugs into the motherboard as well.
      However those PCBs are not available and are therefore not documented.


 Set 2:
--------

Space Bugger
Game-A-Tron 1981


                       U20 U21 U22
                   U32 U33 U34 U35
             6MHz

          8085   8156
                       2114 2114 2114 2114
                       2114 2114 2114 2114

Main

-------


            GFX

            2114 2114 2114 2114

12.440MHz

Graphics PCB

-------



                         76489  76489


Sound PCB

-------

-
