Composite 128K
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Hello Syntal
Syn> please help with the Composite 128K circuit. I'm not really sure that
Syn> the name is exactly that, but the editing is like Composite 48K. Only on
Syn> my board has RU5 soldered on two floors, one ROM 27S256, soldered
Syn> crib for AY with body kit, there is a system slot for, as I understand it,
Syn> ISA8 connector (looks like the same as on Scorpion?)
It is possible that this creation is called KAY128. In any case it passed
information that Nemo at the beginning of its activities took Leningrad-1 boards (quite
it is possible that Composite-48K) and modified them to 128K.
Unfortunately, I can’t help you with the diagram. But you can find a circuit for Composite-48K, and the available ones
find out and complete the improvements yourself (this is the reality of our lives, and love comes from
this is getting stronger).
Syn> Leningrad-2 is already a different car
Yes, it's a different car. It is a continuation of Leningrad-1, but to Zonov, and
Probably it has nothing to do with the city of St. Petersburg.
Syn> And then that there was Scorpion-256 or there were some others
Syn> intermediate models?
History does not know intermediate clones. There were several modifications of Scorpion-256,
but Leningrad-128 or Scorpion-128 from Zonov is unknown to science, as well as
Scorpion-512.
Hello, All
Good people, please help me with the Composite 128K circuit. I'm not really sure that
the name is exactly that, but the editing is like Composite 48K. Only on my board
soldered RU5 into two floors, one ROM 27S256, soldered crib under AY with
body kit, there is a system slot for, as I understand, an ISA8 connector (it looks like
the same as on Scorpion?) I've searched the entire Internet - there is no necessary diagram, maybe someone has
lying around in the archives? My spec burned out about three years ago - frankly speaking, I and
I forgot about it, now an oscillator has appeared, a soldering station, a programmer
ROM, some knowledge - so I was inspired to repair it. Don't give up your old love
die :v2_wink2;
At all; I myself have already become interested in the history of Zonovsky computers. I understand
Composite is a continuation of Leningrad-1 (or vice versa?), Leningrad-2 is already different
machine (judging by the wiring of the microcircuits on the board). And then there was Scorpion-256 right away
or were there any other intermediate models? I'm really looking forward to the article on
zxnext.narod.ru is about Soviet clones, but the author hasn’t updated the site for a long time.
Hello Syntal
Syn> Yes, there is a circuit from Composite-48K, but it is of very poor quality, a lot
Syn> signal signatures cannot be understood. I redraw it for myself in P-Cade
Syn> using also the Leningrad-1 scheme.
Now this is a sensible approach. If everyone restored the circuit diagram of their computer, this would be
that would be great. Regarding the circuits in more or less decent condition, you need
send personal messages to Conan (owner of the site zxnext.narod.ru)
- he is now unable to engage actively in developing his
site, but will always help with the diagram!
Hello spensor
spe> It is possible that this creation is called KAY128. Anyway
spe> there was information that Nemo took payments at the beginning of its activities
spe> Leningrad-1 (it is quite possible that Composite-48K) and modified them to
spe> 128K.
OK, thanks for the information, I'll look in this direction as well.
spe> Unfortunately, I can’t help with the diagram. But you can find a circuit for Composite-48K,
spe> and find out the existing modifications yourself and complete them (this is the reality of our
spe> life, and love grows stronger from this).
Yes, there is a diagram from Composite-48K, but it is of very poor quality, there are a lot of signatures
Can't make out the signals. I redraw it for myself in P-Cade, also using the diagram
Leningrad-1. So it became interesting which of them is the daughter and which
mother, i.e. who is older?
Hello Syntal
Syn> I wrote on soap, but apparently it was not fate.
If he wrote to me, I didn’t find the letter in the mailbox. And if Conan, then wait a little,
a person may not go to INET every day, but not everyone goes to the Matrix
connected :)
Syn> Now I'm looking for a circuit diagram of the board with VG93, its photo is attached.
I don't see the photos. If anything, it’s better to put the pictures in zip/rar archives and in
Attach it this way - a forum with just pictures is capricious. By the way, I wanted
I would like to take a look at the modernized Composite itself, especially if it
really KAY128.
Syn> I'm interested in what kind of connector this is, like on Zonov's Scorps or something else
Syn> Kulibinism?
Here is a photo of the motherboard that will allow you to make an assumption. But in principle
you can take the circuit from KAY, Scorpion or just the ZXBUS circuit from ZX-Expert and
check if the signals on the connector match.
In general, information to the studio.
Hello spensor
spe> This is already a practical approach. If everyone restored the scheme of their
spe> computer that would be great. Regarding the schemes, more or less
spe> in good condition, please contact by personal message
spe> Conan (the owner of the site zxnext.narod.ru) - he is not able to now
spe> engage in active activities to develop your site, but always
spe> will help with the diagram!
I wrote on soap, but apparently it was not fate. :v2_conf3; Drew; in P-Cade half a circuit,
simultaneously poking the board with an oscillator. It turned out that there was a jamb on the data bus
because of the HGMD board - I soldered it off for now. I uploaded the firmware from the test ROM - it turned out
What else are RU5 rowing? I found the old ones, poked them around - the RAM smelled. Inserted native
ROM, I saw the menu for the 128th Spec. The joy was short-lived - then nothing even
It’s impossible to do - my keyboard is in a half-dead state, the drive doesn’t work without a card
plows. Now I'm looking for a schematic diagram of the board with VG93, its photo is attached. I understand she
It had to be plugged into the connector, but I have it soldered on the wiring. Interested
What kind of connector is this, like on Zonov’s Scorps or some other Kulibin thing?
P.S. Something says that copying the photo to the system folder failed???
:v2_conf3:
Hello Syntal
Syn> Attachment management
Syn> Loading errors
Syn> comp128.zip;
Syn>; Copying to the system folder failed.)
So, since the topic is interesting, let’s send it to my email (coordinates
is in my profile), and I’ll attach it to the topic. Agreed? If not
If it works, write to PS (personal messages).
Hello spensor
The drive controller is very reminiscent of BDI by Nemo!!! Looks like mine
the assumption about KAY128 is confirmed!
Tell us about the fate of this computer! Where did it come from, in what year?
In view of the changed circumstances, the scheme of this
computer, or at least improvements! Information is priceless for history!
Hello Syntal
> ISA8 connector (looks like the same as on Scorpion?)
And what is typical earlier was a photo of a subject with a lamellar and needle connector
(not with Isovy).
Hello fan
Additional information on this miracle of technology was provided here (for some reason I didn’t
I remember this topic, I found it by searching...): http://zx.pk.ru/showthread.php?t=2125 Photo
The board looks similar, and the drive controller in the photos is Syntal, made by Nemo.
The diagram for Composite-48 is in this thread: http://zx.pk.ru/showthread.php?t=2689, and
some information here: http://zx.pk.ru/showthread.php?t=862. And you can still
contact here:
http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm and here:
http://sblive.narod.ru/ZX-Spectrum/Composite/Composite.htm.
Hello spensor
spe> The drive controller is very reminiscent of BDI by Nemo!!!
To spark interest, I’ll say that I found an etched SKiM inscription on the board
159-87-58. Maybe this will tell someone something? Would you like to find a diagram?
spe> Looks like my assumption about KAY128 is confirmed!
Was there such a computer at all? Or is this an ephemeral concept and the computer was called
differently in different sources, because I have not heard such a thing, as well as
Composite-128K!
spe> Tell us about the fate of this computer! Where did it come from, in what year?
As I remember now, my dad bought it for me in 1994, it cost 250 grand. After my
tape recorder Spectrum 48K was something: disk drive, 128K memory, music.
coprocessor and everything in one case with a built-in power supply. Bought from a guy
(hello, Hera!) at the Krasnooktyabrsky market, which soldered them from iron,
which I stocked up on in St. Petersburg.
spe> Due to changed circumstances, the diagram becomes very relevant
spe> of this computer, or at least improvements! For history information
spe> priceless!
Yes, the circuit is as necessary as air, but there seems to be nowhere to get it! I decided for myself
first redraw the Composite 48K diagram in P-Cade, and then finish drawing according to it
yours. So far this matter is going hard due to lack of time and lazinessCertainly.
Hello Syntal
Syn> To spark interest, I’ll say that I found an etched one on the board
Syn> inscription SKiM 159-87-58
Interesting, but says little, looks like a development serial number... It appears
suspicion that Nemo “chemically” something. By the way, he never
circumstances did not sell BDI separately from KAY!
Syn> Would you like to find a schematic?!!
The diagram is in Radio Amateur 1995, N1-2;
http://anklab.pirit.info/Press/RL/index.html;
Syn> Was there such a computer at all? Or is this an ephemeral concept and computer
Syn> was called differently in different sources, because I don’t have one
Syn> I heard, but so did Composite-128K!
Well, how can I tell you, both the first and second are true - Nemo took the payments
Leningrad1/Composite and upgraded the computer to 128K, this “ethereality” he called
KAY128. There is a mention of the computer on the advertisement sheets in the books “How to write a game
in BASIC (Assembler) for ZX-Spectrum." And about how it should approximately
look like Conan was telling.
Syn> Yes, the circuit is as necessary as air, but there seems to be nowhere to get it! Decided for
Syn> first redraw the 48K Composite diagram in P-Cade, and then use it
Syn> finish drawing yours. So far this matter is going hard due to the absenceSyn> time and laziness, of course.
With the scheme, only roma (http://zx.pk.ru/member.php?userid=954) can
help, since this topic also interested him and perhaps he
made progress in this matter. It’s useless to ask Nemo - he’ll give you a diagnosis right away
will put it :) And as for laziness, I know from myself that if something is interesting not only
yourself, the work goes easier ;)
Hello spensor
spe> Interesting, but says little, looks like the serial number of the development...
spe> There is a suspicion that Nemo “chemically” something. By the way, he never
spe> under no circumstances did I sell BDI separately from KAY!
It seemed to me that this was a phone number in St. Petersburg, I thought maybe someone would remember,
who it belonged to at one time, but it seems without any options that it is NEMO's
craft!
spe> The diagram is in Radio Amateur 1995, N1-2;
spe>; http://anklab.pirit.info/Press/RL/index.html
I looked, but for some reason I didn’t find exactly the one I have - there’s another one in the magazine. On
on the website sdlive.narod.ru in the section about KAY-1024 there are photos of the BDI board almost like this
Same as mine, but unfortunately there is no diagram there. And she is desperately needed - soldered
back to the BDI scarf to my computer, which had been reanimated, as it seemed to me, and back
The initial menu stopped starting. I have already found a break in the power supply and
I re-soldered the burnt LP8, but it looks like something else was burnt - without a circuit diagram it’s a chore
search.
spe> Well, how can I tell you, both the first and second are true - Nemo took the boards
spe> Leningrad1/Composite and modified the computer to 128K, this “ethereality” he
spe> called KAY128. There is a mention of the computer on advertisement sheets in booksspe> "How to write a game in BASIC (Assembler) for the ZX-Spectrum." And about that
spe> Conan told us what it should look like.
I read my contemporaries: v2_biggr; -; found an article in Radio Amateur N11 for 1993
year (pages 8-9) from Comrade TSE-NEMO himself about the affairs of that time. (By the way, very
I advise you if you are interested in this topic, although maybe I’m the only one who doesn’t know about it
was.) Now I absolutely understand for myself that KAY-128 is absolutely real
machine, that’s what the author himself called it. The article also mentions Composite-48,
The only unpleasant thing was the author’s statement that KAY-128 was constantly
an improved machine, which is why there is probably no final design
existed, but the transitional ones were lost.
spe> Only roma can be with the scheme
spe> (http://zx.pk.ru/member.php?userid=954) can help, because this
spe> the topic also interested him and perhaps he made a little progress in this
spe> case.
Now I'm more interested in the BDI circuit, but it has a completely different controller, like
I understand, but thanks anyway, I missed this topic, maybe I’ll get back to you later!
Hello Syntal
Syn> I looked, but for some reason I didn’t find exactly the one I have - in the magazine
Syn> other.
What exactly is different? Maybe I was wrong with the magazine number, of course
maybe... From memory, in RL 1994 N10-12 the "KAY-256" scheme was published, and in RL
1995 N1-5 the BDI controller and Nemo keyboard designs were published.
The article also shows the wiring diagram (read the board drawing) of the BDI, it is the same
like in your photo.
Syn> On the website sdlive.narod.ru in the section about KAY-1024 there are photos of the BDI board
Syn> is almost the same as mine, but unfortunately there is no diagram there.
Strange... Fan, how is this possible?! ;)
Syn> And I desperately need it - I soldered the BDI board back to mine
Syn> reanimated, as it seemed to me, computer - and stopped back
Syn> start initial menu.
It seems the problem lies in the TRDOS trigger (elements D14, D13, D12.1, D1.2, D5.1,
on the diagram attached by Caro) or signals on it (breaks CSROM, WAIT, RES, IORQ,
M1, RS, A8-A13, DOS). If the DOS/ signal is generated incorrectly, then
switching ROM banks will not occur correctly. Actually because of this
The menu will not start.