Problem with KAY-1024
ZXNet echo conference «hardware.zx»
Hello demon_zx
1. Nemo can’t tell you yet :)
2. Change your mikruha to an imported one!
Hello, alsoft
It looks like the mikruha is overloaded, try it with your finger, if it’s hot, then most likely it’s
that's right, check the power supply, and then change the mikruha to a more powerful series
(I can’t tell you, I don’t remember) or better yet, put the Burzui analogue.
Hello, Evgeny Muchkin
From personal experience, TM2 in the clock generator often crashed on Scorp.
When I hesitated, I installed KM155TM2 instead.
It works like a tractor, fortunately the body is not plastic, but ceramic. Yes, and episode 155
under load it holds more than 555 or 1533. :)
Hello, alsoft
Dear, can someone post a picture with a diagram of the arrangement of elements
on the KAY-1024 board, otherwise I can’t find the necessary microcontroller (on the D33 diagram)...
the most surprising thing is that there is no 555KP13 on the board, as Nemo assured me, but it is stuck
set 1533KP13
Hello, alsoft
als> the most surprising thing is that there is no 555KP13 on the board, as Nemo assured me, but
als> stuck set 1533KP13
1533 is faster than 555 (i.e. better)
als> the computer's IC constantly fails with a certain frequency
als> D33 / 555 KP13 2("Svetlana")
if this happens with all attributes, then it is D33,34 (they are 4 bits each).
"Svetlana" - ge hike, put the bourgeois 74ALS298 (this is 1533) or more powerful -
74F298. 74HC (about the same as 74ALS in speed), 74AHC, 74AC,
74ACT (these are all faster) and the like. Why it is overloaded - it is not clear what
is there in place of D43 (1533KP11)? it wouldn't hurt to replace it too (74ALS257,
74HC257 and so on according to spsik :) )
ewg> When I hesitated, I installed KM155TM2 instead.
It won’t work here - delays in this place are critical for image quality.
Hello Ronin
Thank you very much for the advice, all that remains is to find these little things on the board... schematic
I have lost my disposition... I myself am not much confused, still not
ironworker :)
Ron> Why it is overloaded - it is not clear what is in place of D43 (1533KP11)
Ron> costs ? it wouldn’t hurt to replace it too (74ALS257, 74HC257 and so on
Ron> by spsik )
This is where it stands...
Hello, alsoft
als> What's in the pdf? If there is something else useful besides the diagram, then go ahead!
als> if only a layout diagram, then it can be a picture... from pdf
als> in jpg for example.
In addition to the installation, there is also a diagram.
Here I pulled out a jpg montage.
File: KAY1024_2.zip http://zx.pk.ru/attachment.php?attachmentid=4031
File: KAY1024_3.zip http://zx.pk.ru/attachment.php?attachmentid=4032
Hello, alsoft
als> Dear, I am sure that among you there will be someone who has a diagram
als> location (installation) of elements on the KAY-1024/3SL/Turbo board.
als> Please share.
als> Thank you very much!
Look here: http://sblive.narod.ru/ZX-Spectrum/
Hello, alsoft
als> I was already there, I took the computer diagram there, and the layout of the elements
Unfortunately there are no als> on the board, there are only photographs of the “bare” board itself.
I have a pdf but the file is large, almost 6 meg.
Hello Costa
Cos> Look here: http://sblive.narod.ru/ZX-Spectrum/
I was already there, I took the computer diagram there, and the layout diagrams of the elements on the board
Unfortunately no, there are only photographs of the “bare” board itself.
Hello Costa
Cos> I have a pdf but the file is large, almost 6 meg.
What's in the pdf? If there is something else useful besides the diagram, then go for it! unless
layout diagram, then it can also be a picture... from pdf to jpg for example. Otherwise
It’s expensive to download 6 meters, I’m sitting through expensive traffic :).... And if you post it,
You can download it for free at the institute.
Thanks in advance!
Hello, alsoft
Dear, I am sure that among you there will be someone who has a layout diagram
(installation) of elements on the KAY-1024/3SL/Turbo board. Please share.
Thank you very much!