Destroyer? By Atari 1977 The atract mode had (c)1977 Atari displayed in the middle of the screen (mirrored) The MAME version did not appear to have this des.m1 = MMI 6301 read as 82s129 - labeled 01 30131 des.e2 = MMI 6353 read as 82s137 - labeled 01 30141 des.e2 = MMI 6353 read as 82s137 - labeled 01 30143 des.k2 = 82s123F - labeled 01 30136 des.f3 = MMI 6353 read as 82s137 - labeled 01 30142 des.j3 = MMI 6353 read as 82s137 - labeled 01 30144 des.f4 = MMI 6353 read as 82s137 - labeled 01 30132 <---\ des.k4 = MMI 6353 read as 82s137 - labeled 01 30132 <------- Same numbering des.p4 = MMI 6353 read as 82s137 - labeled 01 30135 des.p8 = MMI 6353 read as 82s137 - labeled 01 30134 des.n8 = MMI 6353 read as 82s137 - labeled 01 30133 Data I/O looks like it saves garbage in the top 4 bits of every byte for the 82s137's