Dragon 200E Lower Case Daughterboard ROM question

[dublevay]

OK - I am working on something.

[dublevay]

A possible new version of the lower case board. Minimised probably as much as I can - now down to 50.08 x 55.37mm.

Candidate1.png (940.08 KiB) Viewed 332578 times

[dublevay]

Candidate 2. 58.34mm x 38.74mm.

Candidate2.png (538.33 KiB) Viewed 332567 times

If I go ahead with these, they will be pre-assembled - apart from any headers and the DIP socket.

[robcfg]

Looks really nice!

[dublevay]

I went further, and SMD'd nearly everything!

Candidate3.jpg (177.28 KiB) Viewed 332550 times

[robcfg]

I've been wondering if there's a way to select the banks and the inverted colour using one of the unused I/O addresses instead of doing it with switches and jumpers.