Spectrum of tomorrow...

DP>> I can, say, assemble it at home, it will work great
DP>>, I will like it and give pleasure with my work, but
DP>> because

DP>> you won’t see it. And I’m the only one who needs it - I won’t
DP>> write a bunch of programs for it. And as such, in my opinion, no one needs PENTAGON II -
DP>> no one

DP>> will buy it for the sake of getting rid of “snot”, and besides, it will not
DP>> have the ability to expand and is doomed to be overgrown again with
wires
DP>> :(.

RM> Well, you are a little chaotic, all in one pile dumped...

RM> The problem is to _make_ this new Spec!

RM> That is, to develop a successful version of the board. Having previously discussed
RM> the configuration and all the

RM> nuances of the circuit in the echo and other possible ways with
RM> spektrumist-realists throughout the ex-USSR (and not in one city!), find out what exactly it is. need
RM> people.

PEOPLE NEED TO GO UPGRADE THEIR PENTIUMS :) As one
person wrote to me. This is the best option for him.

RM> Make a certain amount of them and start selling them. And together
RM> with

RM> schemes. And for those who wish, with all the information for the production of these boards. (and

RM>copyright

RM> copies and distributions :)

[ chewed ]

RM> Naturally, it will be overgrown with new snot modifications. But imho this
RM> is the

RM> evolutionary path of development of Spec! Revolutionary - Sprinter. ;)

For some reason, no one really understood me :(. I’m not offering a super-duper sophisticated Spectrum. I’m offering the same Pentagon, but with the possibility of further modernization (and even “specific”) with little blood. JUST WHEN
I REALLY NEED IT, EVERYTHING WILL INSERT INTO MY COMPUTER WITHOUT PROBLEMS, AND YOU WILL AGAIN CUTE YOUR
PENTAGON II AND BRIND IT WITH WIRES.

In short, I’m giving up on this topic for now, I’ll find a dock for hardware z180 and
z380 and then the first ones I’ll show everyone my work and then we’ll discuss it.

Sincerely, Dmitry.

DP> For some reason, no one really understood me :(. I’m not offering a super-
DP> super-duper sophisticated Spectrum. I’m offering the same Pentagon, but with the possibility of
DP> further modernization (and even “specific”) with little bloodshed.
Hmmmm... The Spectrum was originally designed with a closed architecture.
So? So how are you going to “modernize it with little blood”, without changing
this very closed architecture?

DP> In short, I’ll give up on this topic for now, I’ll find a documentation for the z180 and
DP> z380 hardware and then I’ll show everyone the first developments - then we’ll be done discuss.
It's not about a specific piece of hardware, but about the closed nature of the spectrum...

Good luck !

DP> super-duper sophisticated Spectrum. I propose the same Pentagon, but with
DP> the possibility of further modernization (and even “specific”) with
DP> little bloodshed.
DP> I AM NOT FORCING YOU TO PUSH INTO A Z380 COMPUTER RIGHT TODAY :(. JUST
DP> WHEN YOU REALLY NEED THIS, INTO MY COMPUTER EVERYTHING WILL INSERT WITHOUT PROBLEMS, AND
DP> YOU WILL AGAIN CUT YOUR PENTAGON II AND BRAVE WITH WIRES.

I would be the first to support you, but, IMHO, you don’t quite accurately imagine
the whole complexity of implementing your project.

DP>> Duper sophisticated Spectrum. I propose the same Pentagon, but with
DP>> the possibility
DP>> of further modernization (and even “specific”) with little bloodshed.
EM> Hmmmm... The Spectrum was originally designed with a closed
EM> architecture.
EM> So? So how are you going to “modernize it with little blood”, without
EM> changing
EM> this very closed architecture?

The main hope is in the operating system, which should take care of the various hardware.

AI> I would be the first to support you. but, IMHO, you don’t quite accurately
AI> imagine
AI> all the complexity of implementing your project.

What’s so complicated? Decompose the circuit of the same Pentagon into blocks and do it on separate boards? In addition, the TR-DOS controller seems to be released by Nemo for his Kai. Why not take advantage of this? ;). Zonov sells a keyboard and mouse controller, and not only him. Look, Ivan Mak
likes the idea and he will make a video controller with Sprinter graphics modes :-).

Sincerely, Dmitry.

One day, Wednesday August 11, 1999 20:23, Dmitry Pavlukhin wrote to Artur Ishmurzin:

DP> What’s so complicated? Decompose the circuit of the same Pentagon into blocks and
DP> make it on separate boards? In addition, the TR-DOS controller seems to be like
DP> Nemo releases for his Kai. Why not take advantage of this? ;).
DP> Zonov sells a keyboard and mouse controller, and not only him.
DP> Look, Ivan Mak will like the idea and he will make a video controller with
DP> Sprinter graphic modes :-).

everything is correct. all this is feasible. but you also wanted to poke the processor into the slot. and I wanted to make it replaceable from z80 to z180/380. but this is where the
complexity lies.

AI> everything is correct. all this is feasible. but you also wanted to poke the
AI> processor into the
AI> slot. and I wanted to make it replaceable from z80 to z180/380. but this is where the
AI> and
AI> complexity lies.

I didn’t just want to stick the processor into some kind of its own slot. It's just that the new bus will contain more address bits and possibly data. And
the memory management ports will be on the processor board with the Z80. Let's say in five years everyone will decide to install a Z180 or Z380 on their computer. The replacement will
consist of replacing the processor unit. Of course, on a board with a Z380 ports
there will be no extended memory management - the processor already has a 32-bit address bus. One bad thing is that with this approach it is difficult to achieve compatibility with old software :(. But in principle it is possible :). Most likely, the future user will not notice the difference (except perhaps acceleration). And about the programs
written for the system (on which everything will be based), there is nothing to say
at all - they will only get better from rearranging the processors.

Sincerely, Dmitry.

One day, Friday August 20, 1999 11:26, Dmitry Pavlukhin wrote to Artur
Ishmurzin:

DP> I didn’t just want to stick the processor into some own slot.
DP> It’s just that the new bus will contain more address bits and possibly
DP> data. And the memory management ports will be on the
DP> board of the processor with the Z80. Let's say in five years everyone will decide to install a Z180 or Z380 computer in their
DP>. The replacement will consist of replacing the processor
DP> unit. Of course, on a board with a Z380 there will be no extended
DP> memory management ports - the processor already has a 32-bit address bus. It’s bad

you don’t quite clearly imagine the scale of your idea, IMHO. here
the problem is not only, or even so much, in the memory management ports. although this also deserves attention - the z80 is an 8-bit processor, it also uses eight-bit memory. z380 is 32-bit, but the memory in this case remains the same.
The circuit will have to be changed. It is also essential to use a new GTI for
z380, which will have to be substituted in place of the old one. Also new in the computer architecture will be the presence of a third interrupt mode in the new processor; its use will also need to be included initially in the motherboard. and
all this leads to an unnecessary increase in cost and exorbitant complexity of the board.
simpler,when the need arises, wire the board using the z380 in
all its glory.

DP> one thing - with this approach it is difficult to achieve compatibility with old
DP> software :(. But in principle it is possible :). Most likely
DP> the future user will not notice the difference (except perhaps acceleration). And
DP> there is nothing to say at all about programs written for the system (on which everything
DP> will be based - they will only get better from rearranging the processors
DP>.

as it turned out, there will be no need to achieve compatibility with the z80, because z380
has the ability to work in z80 “emulation” mode.