Description of the ZX-Spectrum circuit
ZXNet echo conference «hardware.zx»
Hello Andrnow
And> fan That's the point.... but I would like to read how IT worked without
And> this "transparent memory access"
You asked for a document about Leningradka, take a look at this one, it might help with something.
File: #manual.part3.rar http://zx.pk.ru/attachment.php?attachmentid=3010
File: #manual.part1.rar http://zx.pk.ru/attachment.php?attachmentid=3008
File: #manual.part2.rar http://zx.pk.ru/attachment.php?attachmentid=3009
Hello, y-dmitry
ydm> You asked the document about Leningradka, look at this one, maybe in something
ydm> will help.
What's on the cover? Who is the publisher? (You can send it to my website ;) ).
Hello fan
fan> What's on the cover? Who is the publisher? (You can send it to me at
fan> site ;) ).
I don’t know, they sent it to me myself. Of course you can... :)
Hello, y-dmitry
This option is certainly far from what is described in RADIO magazines.
I highly recommend that anyone who doesn’t have articles from RADIO get them.
(ftp://ftp1.radio.ru/pub/).
Hello fan
fan> This option is certainly far from what is described in magazines
fan> RADIO . I highly recommend that anyone who doesn’t have articles from RADIO get them.
fan> (ftp://ftp1.radio.ru/pub/).
I wish I knew which rooms to look in... otherwise each room is 5 meters long.
Hello fan
fan> I gave a complete list above, even indicating the pages %)
fan>
fan> By the way, this is a pretty good description of the floppy controller
fan> http://spectrum128.spb.ru/paper/6_about_3.html
Sorry fan, I was a little inattentive.
Hello Andrnow
And> Guys - if you need articles from the radio, I can upload them to my website
And> :)
That would be great. Thanks in advance.
PM me the site address.
Hello, y-dmitry
ydm> I wish I knew which rooms to look in... otherwise each room is 5 meters long.
I gave a complete list above, even indicating the pages)
By the way, this is a pretty good description of the floppy controller
http://spectrum128.spb.ru/paper/6_about_3.html
Hello, y-dmitry
Guys, if you need articles from the radio, I can upload them to my website :)
Hello, y-dmitry
In general, whether you wanted it or not, I posted a diagram and description of the computer from
Radio magazine. Download for good health :)
http://andrnow.narod.ru/zx/radio/
Hello fan
fan> By the way, this is a pretty good description of the floppy controller
fan> http://spectrum128.spb.ru/paper/6_about_3.html
The link doesn't work :(
Hello Andrnow
And> In general, whether you wanted it or not, I posted the diagram and description
And> computer from the Radio magazine. Download for your health
And> http://andrnow.narod.ru/zx/radio/
These are uprooted articles from magazines located on ftp://ftp1.radio.ru/pub/ ???
(It seems like everything should be there in djvu.)
Or did you scan it yourself?
Hello, Andrnow
http://spectrum128.spb.ru/paper/issue06.shtml?about04
http://spectrum128.spb.ru/paper/download/betadisk.ra
Hello fan
fan
I bought this on disk))
What confused you??? Large size or what?? so I kind of squeezed it like that :(
PS: when I have time, I’ll convert them into text with pictures...
Hello Andrnow
And> What confused you??? Large size or what?? so I guess so
And> compressed
I was confused by the fact that they are not in djvu, but they look good, this is the first one, so to speak
option from the RADIO website, but then they suppressed it to djvu...
Just look at the list of elements in the diagram
ftp://ftp1.radio.ru/pub/1995/07.djvu (download only if you don’t care ;) )
this sheet was already of terrible quality, and even one-bit (the only one
one-bit of all) so now it’s been specifically shaken %)
I hate djvu... In the hands of a craftsman this is a terrible force: v2_lol:
When djvu appeared I fell in love with PDF :v2_lol:
Hello fan
There is a stupid question about the circuit - why is the DD44 555KP13 multiplexer sticking out there (the one with
which goes R G B Y) and is strobed :v2_eek; With; outputting each point from
shift register???
I really don’t understand this confusion%(Why not do it like on the Pentagon128 (?).
Hello fan
on p128 there is a lot of ir23 (27) - attribute buffers, saved in Leningrad
Hello, The Exploited
The answer is not clear, look at the “zx-radio” diagram. I'm talking about the process
scraping information from registers with a DD44 555KP13 multiplexer, it rereads it
(in short, remembers) with the output of each point! After all, it was possible to add
555KP11 (or finally, how to do it in the Pentagon128) and directly pump the information without
gating for each point.
For now, my only guess is that the attribute doesn’t spread
(manifests as thin stripes on the boundaries of the attribute), nothing else in
the head doesn't fit.
Hello fan
ir10 is written with a positive front, and kp13 with a negative front. I understand
This results in a shift of half a pixel. but in the Pentagon writing to the pixel registers and
attributes goes through different signals C2 and C3. just wr_inf and ir10 need time
for shift. it seems like this is how it works...
Hello, The Exploited
OK, I see, I missed these moments in the Pentagon%)