Bio-Rhythm by For-Play Etched in copper on main board BIO-RHYTHM LOGIC FOR-PLAY MADE IN USA REV G ADJUST FOR 2V ON BLACK WILL BE LESS THAN 1V ON WHITE Etched in copper on CPU board FP 4X-1280 COMPUTER REV A FOR-PLAY MADE IN USA Etched in copper on back of driver board BIO-RHYTHM DRIVER REV E FOR-PLAY MADE IN USA Etched in copper on back of little vertical board PHOTOCELL AUTO ADJUST The data was read using a reader that I got after reaching out to Tim at https://4004.com/. He forwarded my info to a guy named Klaus who reached out and sent me the bare pcb and the parts and the software needed to read the 4001 chips. His reader spits out the data in ascii. His code reads the whole data of a chip into memory. It then does 20 loops of reading each address again and comparing it with the original data read. It spits out an error when the new read data does not line up with the original read data. None of the chips showed any errors. After 20 loops, he prints out the original buffer. There are 5 p4001 chips on the board. Their "chip number" was stamped on each one and lined up with the addresses that were dumped. They are 0 through 4. .txt dump of all chips. .0 used an online tool to convert the text to binary of chip number 0 .1 used an online tool to convert the text to binary of chip number 1 .2 used an online tool to convert the text to binary of chip number 2 .3 used an online tool to convert the text to binary of chip number 3 .4 used an online tool to convert the text to binary of chip number 4 0.276 C:\Siftware\roms>c:\games\mame_command\mame -romident c:\siftware\roms\bio_fp1\roms\bio_fp1.0 Identifying c:\siftware\roms\bio_fp1\roms\bio_fp1.0.... bio_fp1.0 NO MATCH C:\Siftware\roms>c:\games\mame_command\mame -romident c:\siftware\roms\bio_fp1\roms\bio_fp1.1 Identifying c:\siftware\roms\bio_fp1\roms\bio_fp1.1.... bio_fp1.1 NO MATCH C:\Siftware\roms>c:\games\mame_command\mame -romident c:\siftware\roms\bio_fp1\roms\bio_fp1.2 Identifying c:\siftware\roms\bio_fp1\roms\bio_fp1.2.... bio_fp1.2 NO MATCH C:\Siftware\roms>c:\games\mame_command\mame -romident c:\siftware\roms\bio_fp1\roms\bio_fp1.3 Identifying c:\siftware\roms\bio_fp1\roms\bio_fp1.3.... bio_fp1.3 NO MATCH C:\Siftware\roms>c:\games\mame_command\mame -romident c:\siftware\roms\bio_fp1\roms\bio_fp1.4 Identifying c:\siftware\roms\bio_fp1\roms\bio_fp1.4.... bio_fp1.4 NO MATCH