PAGING PORTS of ZX / CLONES

[Black_Cat]

On old Pentagons 256/512kB select D6 next 128kB and D7 next 256kB. But on PENTAGON 1024 is used D5 for next 128kB,D6 for next 256kB and D7 for next 512kB ?

Yes

Software writed for Pentagon 512kB will work on Pentagon 1024SL 2.2 ?

Yes

Is possible load from 512kB ramdisc some software for Pentagon 512kB ?

Yes

I need combine more memory layouts(ports) in one ZX Spectrum with 1MB memory (one memory for all modes). For example:
I set via OUT command machine ZX PROFI and sign all 1MB memory pages with page number, set logical page 31 and load some utility to ZX ram. After switch to PENTAGON 1024 must be in same memory page this utility.

Location memory pages for the different clones is not significant.