[Jul/06/98]

        MEGA ZONE   CHIP PLACEMENT

USES 69A09EP, Z80 CPU'S & AY-3-8910 SOUND CHIP W/8039 CPU

THERE ARE AT LEAST THREE VERSIONS OF MEGA ZONE, ALL THE ROMS ARE THE
SAME EXCEPT POSITION 6,7,8,9,11H IN SETS 1,2
ALL ROMS ARE 2764 EXCEPT H01 (E01) IS A 2732

CHIP #     POSITION                         VERS 3
-----------------------------------------------------
VER-1                VER-2
-----------------------------------------------------
319-E08    2D        E08      REAR BOARD    8  SAME
319-E09    2E        E09       "            9  SAME
319-E10    3D        E10       "           10  SAME
319-E11    3E        E11       "           11  SAME
319-G12    8C        G12       "           12
319-G13    10C       G13       "           13  SAME
319-E02    6D        E02      CONN BOARD    2  SAME
319-H03    6H        J03       "            3 
319-H04    7H        J04       "            4 
319-H05    8H        J05       "            5 
319-H06    9H        J06       "            6 
319-H07    11H       J07       "            7 
319-H01    3A        E01       "            1  SAME
Z80        7E                                        IC#
AY-3-8910  8B                               PROM     98     TBP18S030 (82S123)
AO72       12F   KONAMI                     PROM     48       "
K824-501   8D    KONAMI                     PROM     42       "
8039       4B                               PROM     63     TBP24S10  (823126)
                                            PROM     33       "
                                            PAL16L8  63                
                                            PAL16L8A 67                    

VERSION 3 IS ON THE SAME SIZE CONNECTOR BOARD, BUT THE BOTTOM
BOARD IS ABOUT 1 1/4" LONGER AND WIDER

THE CHIPS THAT HAVE THE DESIGNATION SCRATCHED OFF ON THE ORIGINAL
BOARDS ARE      NAME          CHIP TYPE
            ---------------------------
CONN BOARD      IC3             TMP8039P-6
 "              IC6             AY3-8910
 "              IC26            Z-80
 "              IC39            MC68A09EP (CUSTOM ON ORIGINAL)
 "              IC27            N/U       (CUSTOM ON ORIGINAL)
REAR BOARD      1C026           N/U       (CUSTOM ON ORIGINAL)

