The TE-1506 could be too much complicated for most of the users.
Those who don’t need to replace system ROM but want a permanent Basic extension will be interested by this new module !
It’s like a CE-161 but with 2x16KB RAM and 2x16KB EEPROM for Basic extension.

Here is the schematics :

If a least 10 or more readers are interested i can produce it as a kit or mounted.
But only after having released the TE-1506 module.
If you have suggestions or see an error then please contact me.