How much easier will a “no-attribute” clone of the ZX Spectrum become?

Question

Electronics

If we take as a basis the scheme of the ZX Spectrum clone on 40-50 bulk cases, and exclude from there the nodes responsible for the attributes: ink, paper, bright, flash, border, leaving only one-bit graphics 256x192 and fully preserving software compatibility (the program "thinks" that the attribute was written down, and everything was saved in the corresponding RAM cell, but not displayed), then by how much will the number of cases decrease? On 10? fifteen? Or maybe someone has already done this? Thank you.

Answer 1

Monsieur knows a lot ...
Well , we take the scheme and study it.

In the diagram we see three cases that are responsible for the formation of RGB DD31, DD32, DD36
DD31 is just responsible for the frame, the color of the frame sits in DD39, but you cannot throw out DD39, since work with the cassette will also fall off. So you can only throw out DD31.
Further analysis shows that you can’t throw anything apart from this DD31 (well, maybe DD32, but you have to think).
That is, only three-and-a-half of the body is responsible for the formation of attributes, so I don’t know where you found 10-15.