The 'boot-362.ms2000.bin' file is just the Motorola DSP56362 bin from here (https://mdk.cab/game/dsp56362) and  renamed

The 'flash.bin' was dumped from an MS2000 (not the MS2000 Rack, and not sure if it makes a difference)

The 'hd44780_a00.bin' is for the MS2000/R display (Hitachi HD44780 LCD Controller found here: https://mdk.cab/game/hd44780)

