The Solartron 7150 has two processors and two ROMs.

The lower board has its ROM stored in a 2564 in IC508.

The upper (floating) board is typically fitted with a Hitachi HD637B01V0P one time
programmable micro controller (IC103).  This can be replaced with UV erasable
HD637B01V0C if you can find one.  My ROM programmer doesn't know either of these,
and therefore I wasn't able to read the contents of its ROM.

The images were taken using a MQP 200, which uses 8 byte checksums, for 4
byte checksums, just use the rightmost four characters of the checksums shown below.

Position    Type    Label         File       Checksum
IC508       2564    715052 02 CB  IC508.BIN  000F309B

David Partridge (mailto:david.partridge@perdrix.co.uk)