[Jul/09/99]

Razmataz

Sega 1983


Game is a modified Zaxxon 834-0213, 834-0211 with a G80 Universal sound
card plugged in through an adapter where the 8255 would normally plug in.

CPU is custom labeled M-120

ZAXXON-SOUNDII

                               M120  U27 U28 U29
                               
                               
                               
            316-1921 1922     clr.U72 (lots of wire mods)
                                                          clr.U98
--------
            
ZAXXON-VIDEOII 
            
                                           1928.u90 1929.u91 1930.u92 1931.u93
            
   1925.u77 1926.u78 1927 .u79          
                                   1932.111 1933.112 1934.113
                                   
                                   
                                   
--------
G-80 Universal Sound Board

1923.U50 1924.U51

--------

834-0213 board modifications
this appears to make the board equivalent to -0214 used in Zaxxon

2114
U70  11         U72 4
U70  12         U72 7
U70  13         U72 6
U70  14         U72 5

2114
U71  1          U76 4
U71  2          U76 12
U71  3          U76 7
U71  4          U74 12
U71  5          U76 9
U71  6          U75 7
U71  7          U74 7
U71  11         U72 3
U71  12         U72 2
U71  13         U72 1
U71  14         U72 15
U71  18         U75 4

U72 6301 traces to pads 1-7, 15 cut
U74-U76 74LS157

other jumpers

Edge Conn

8       U54-3, U54-1,2 to U55-3
9       U54-6, U54-4,5 to U56-3

U23-10 -> VR1-3 ---+
                   68k
                   +--- to audio amp
                   1k
                  gnd
this brings the audio from the G80 Universal sound card
to the audio amp

Mods to universal sound board:

cut trace just below U59 on top of pcb, jumper left pad
to EConn S

          *
     dut
*         *

jumper audio out to EConn s

There is a paddle card that supplies power to the G80 sound
board, and converts it to a 40 pin DIP header which plugs in
in place of U23 on the CPU board

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