[Oct/12/93]

Dumped: 9/9/93

---------------
XENOPHOBE notes
---------------



0) General:
===========
Xenophobe comes on two boards:

Sound daughterboard:
- This is probably a descendant of the "Cheep Squeek Deluxe" board
  used in Spy Hunter.  It is probably used in other Bally games from
  the 1986-1988 era.

Huge CPU board:
- Really huge.  The ROMs on Xenophobe are all 28-pin chips, but since
  the board supports 32-pin ROM sockets, it's fairly safe to assume
  that this board was used in other Bally games from the same era as
  well.  Despite the physical similarities in game play and control
  panel, it *CANNOT* be converted to play Rampage; Rampage uses a Z80
  and Xenophobe uses a 68000.



1) Sound board:
===============

The "SOUNDS GOOD" daughterboard has four 27512 EPROMs on it.
The access time should be 250ns or faster.

file/position   sum    type
-------------   ----   -----
xeno_snd.u7     6c7e   27512
xeno_snd.u8     6702   27512
xeno_snd.u17    10c6   27512
xeno_snd.u18    5e64   27512

There is also a PAL on the board.  On my set, its markings were
rather faded, but here's the best guess I can make:

U15 +B8706
    PAL20L10NC
    E36A 31AXN AXAD



2) CPU board:
=============

The main motherboard has two 27256 and eight 27512 EPROMs on it.
The access time should be 250 ns or faster.

file/position   sum    type
-------------   ----   -----
xeno_bg.11d     a689   27256
xeno_bg.12d     6d71   27256
xeno_fg.10j     eb0e   27512
xeno_fg.7j      8942   27512
xeno_fg.8j      a306   27512
xeno_fg.9j      140e   27512
xeno_pro.2b     1999   27512
xeno_pro.2c     588c   27512
xeno_pro.3b     9b12   27512
xeno_pro.3c     bb59   27512

There are also several PALs and other weird goodies on the
board.  Among the "weird" parts, there are some MMI components
at 14E, 14F, 15E, all dated 1981.  (Anyone have any idea what
these might be?)

In the meantime, here are the part numbers (manufacturer and
Bally internal number) for the obvious PALs, all dated 1986:

1J  +B8706
    PAL16L8ANC
    B75A5 0AAJ AXAD

2J  +B8706
    PAL16L8ANC
    B75A5 0AAJ AXAD

2K  +B8706
    PAL16R4ANC
    B75A4 1AAJ AXAD

9B  +B8640
    PAL20L8ANC
    E61A4 9AAJ AXAD

14K +B8706
    PAL16R4ANC
    B75A4 1AAJ BXAD

14H PLS 153N 8637
    A59A2 6AXL CXAD

-
