Recently I made a reproduction of the Fujitsu 'MB112S146'.As far as I know this custom IC is used on few Taito arcade PCBs like Arkanoid (which uses two of them) and Legend of Kage.It's a DIP28 .600mil chip having the main function of graphics shifter :
Actually we already have a working replacement of the Fujitsu 'MB112S146' designed by 'Porchy' from JAMMArcade, time ago he successfully recreated and implemented the functions of this IC into a CPLD :
Taito MB112S146 custom reproduction
As for me, I reproduced it in a 'poor' way using simple TTL gates instead of programmable logic devices :
Testing was successful on my Arkanoid PCB :
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