ROM files structure

[Black_Cat]

PROFI INTERFACE

It's his name?

New NMI button will jump to extra NMI menu without rewriting memory on stack pointer (it's planned feature).

More please..

I/O adress space can be mirrored to extra memory and user can read from memory last writed values to ports

What page number ROM? What is the structure of the record?

[Advertiser]

[VELESOFT]

It's his name?

Yes

More please..

After NMI will disconnect ZX memory and CPU adress will writed to new extra memory.

What page number ROM? What is the structure of the record?

Profi interface will use one 64kB memory block as I/O mirror area.
For example:
After OUT #7FFD,#10 will writed to adress #7FFD in extra memory value #10. (it's 16bit mode)
In 8bit mode: after OUT #7FFD,#10 will writed to adress #FD (accept only low 8bit adress) value #10. After connect this extra memory is possible read last writed values from identical adress.