again about cmos

> By the way, there is no need for Sims.
> Or rather, about additional memory addressing ports.
> there is an option to use all eight bits of the Profi expansion port
> #DFFD (you don’t need to invent a separate port, and you can address
> a decent amount of memory), or use a separate port

What will happen to PROFI? There the banks are switched and the ROM probably too.

> for memory expansion. if the second option, then I want to offer
> a series of ports #AxF7 (16 or 32 ports, as you like :), while
> the port address decoder is the same as for #eff7 and subject ports (mmma
> ID7).

Well, and finally, Does anyone have a ready-made connection diagram for Sims? with
regeneration, etc.?

Just ideas in my head. It is unrealistic to do regeneration as with Spectrum - through video. The device turns out to be too complex. Therefore, there is the following idea:
connect the simm at random, and carry out regeneration on the curb using a
special regeneration cycle. There are about 40 regeneration cycles on the curb,
which is quite enough.

>If there is no ready-made scheme and ours will work, then
>I will definitely throw it here. Now we have the most “fundamental” problem - which
> port should we use to expand the memory?

On the symmetry it makes sense to expand it to at least 1 meter. It should be taken into account that 1-4 will be usedmeter sims.
Using those with more or less memory is undesirable -
it’s just either expensive and pointless, or a lot of sims and again expensive.