Blue board - 1983 etched on the pcb
Roms labeled  1 - 8
Rom dump showed Alpah Densi and  a bunch of baseball text
Champion Baseball?


Mame 0.140.3

C:\Hardware\Dataio\roms>e:\games\mame\mameui32\mameui32 -romident c:\hardware\dataio\roms\blue1\roms\blue1.e2 
blue1.e2            NO MATCH

C:\Hardware\Dataio\roms>e:\games\mame\mameui32\mameui32 -romident c:\hardware\dataio\roms\blue1\roms\blue1.e5 
blue1.e5            = champbb.4             champbas   Champion Base Ball

C:\Hardware\Dataio\roms>e:\games\mame\mameui32\mameui32 -romident c:\hardware\dataio\roms\blue1\roms\blue1.g2 
blue1.g2            NO MATCH

C:\Hardware\Dataio\roms>e:\games\mame\mameui32\mameui32 -romident c:\hardware\dataio\roms\blue1\roms\blue1.g5 
blue1.g5            = 15.5g                 champbasj  Champion Base Ball (Japan set 1)
                    = 15.5g                 champbasja Champion Base Ball (Japan set 2)

C:\Hardware\Dataio\roms>e:\games\mame\mameui32\mameui32 -romident c:\hardware\dataio\roms\blue1\roms\blue1.h2 
blue1.h2            NO MATCH

C:\Hardware\Dataio\roms>e:\games\mame\mameui32\mameui32 -romident c:\hardware\dataio\roms\blue1\roms\blue1.k2 
blue1.k2            = 16.2k                 champbasj  Champion Base Ball (Japan set 1)
                    = 16.2k                 champbasja Champion Base Ball (Japan set 2)
                    = 6.15c                 champbb2j  Champion Baseball II (Japan)

C:\Hardware\Dataio\roms>e:\games\mame\mameui32\mameui32 -romident c:\hardware\dataio\roms\blue1\roms\blue1.l2 
blue1.l2            = 17.2l                 champbasj  Champion Base Ball (Japan set 1)
                    = 17.2l                 champbasja Champion Base Ball (Japan set 2)
                    = 7.15d                 champbb2j  Champion Baseball II (Japan)

C:\Hardware\Dataio\roms>e:\games\mame\mameui32\mameui32 -romident c:\hardware\dataio\roms\blue1\roms\blue1.n2 
blue1.n2            = 18.2n                 champbasj  Champion Base Ball (Japan set 1)
                    = 18.2n                 champbasja Champion Base Ball (Japan set 2)
                    = 8.15e                 champbb2j  Champion Baseball II (Japan)