Hit me by Ramtek

Etched in copper on board	HIT ME by RAMTEK Made in U.S.A
				ASSY 550596 D				D was as sticker
				SER 957					957 was a sticker

Etched in copper on back	FAB 550595-C

.b7			stamped 	15347 7625
					HM2-0


.c7	IM5605		handwritten	HM-2-2

.d7			stamped 	15349 7625
					HM1-4

.e7			stamped 	15350 7625
					HM1-6

.f7			stamped 	15351 7625
					HM2-8

.h7	IM560?		handwritten	HM0-CG	hard to read

All chips we read as 82s141 - guessed becuase of 24 pin pinout and 512x8 rom according to mame
			
Mame 0.136

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\hitme\roms\hitme.b7 
hitme.b7            NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\hitme\roms\hitme.c7 
hitme.c7            NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\hitme\roms\hitme.d7 
hitme.d7            NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\hitme\roms\hitme.e7 
hitme.e7            NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\hitme\roms\hitme.f7 
hitme.f7            NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\hitme\roms\hitme.h7 
hitme.h7            = hmcg.h7               hitme      Hit Me
                    = hmcg.h7               m21        21 (Mirco)