ROM files structure

[Black_Cat]

Not true. K-MOUSE is used also in ZS SCORPION computers (but only old version 2006 )

Connect possible, but for the Russian clones easier to use ZXMC-2.

NEMO BUS use very similar pinout as ZX BUS, only different connector:

K-MOUSE TURBO 2008 will not use IORQGE, and therefore does not meet the standard NemoBus.

K-MOUSE can detect without hardware modification only port 7FFD (from ZX bus is connected to CPLD only A15, A10, A8, A7-A0). Exist software using uncomplette port adressation - for example:
OUT 0,page or OUT 253,0 - not work on SCORPION, SPRINTER, +2A, +3, but work on PENTAGON 128/512, ZX128,ZX128+2
Also OUT 252,xx on real ZX128/+2 write XX value to ULA port FE and parallel to paging port 7FFD. This feature is used for set border colour and videoram switching in tape loaders

This is all special cases that have no meaning.

It's impossible. Only one ZX user (have cable for programming CPLD from PC)

If you publish the scheme programming CPLD, then users would be able to do it.

I can write new firmware with readable different ports, but must be modified schematic or real interface with wires. Will replaced some features with other readable ports, or replaced CPLD with bigger SMD version (64 or 100 pins).

This is of course possible, but it's more complicated way.