[Mark1960]

The microtan 65 used a similar character generator, there was an option to use two 64 character generators to support both upper and lower case. The same method could be used by the cpld vdu, I’m sure there is a lower case generator to match the one used in the mk14 vdu.

There was also a later device, I think DM86S128, that generates 128 characters, both upper and lower case.