BYTE BROKEN!!! HELP!!!
ZXNet echo conference «hardware.zx»
Hello, All
BYTE worked fine for me for 10 years, but after a month of inactivity it doesn’t work
BASIC is loading. Doesn't respond to reset, some bars are hanging :mad: Please,
help!!!
Hello Surfin' Bird
I’m not talking about the computers themselves, but about the micro ROMs - very often they came from factories with defects
what place were they rejected...
Hello BYTEMAN
Then I didn’t understand what stripes you were talking about.
And BASIC actually doesn’t even need to be loaded, it’s just there.
Describe in more detail.
I understood this: you turn on the byte, then you push it to reset, and there are some stripes there
center of the screen.
maybe you mean the reset procedure when the screen fills with red
vertical stripes, and then they begin to “disappear”.
it's actually a memory test. if it hangs until the stripes disappear, then
fail on this very test.
Try pressing reset again and “Y” “B” “A” together.
And about the non-working keyboard when the “combination” is pressed.
It’s like you push it together, reset it, and then there’s zero reaction?
or some kind of program is running, bam, I pressed the combination button - the keyboard stopped working. pressed-
is it working again?
if the first, then when you press “combined” an additional 2 RFs are connected,
Sorry there, maybe there is a glitch somewhere.
or they got covered.
Hello Sinus
I have a diagram. And the stripes are in the center of the screen. BASIC won't load at all!!! I
I'll try to reflash the D72 and D73 mikruhi.
And one more thing. About 5 years ago, when the COMBINE button was pressed, the keyboard stopped working. When
pressed everything is ok. Now completely stuck :o
Hello Sinus
When I hold YVA, the edging blinks, after that it hangs. It hangs after
passing the red stripes. I've already bought some mikruhi, bought sockets and new RFs.
The sockets are already soldered. Tomorrow they will sew these mikruhi for me (they must flash them...) and maybe
this will help... There are also some RT devices on my board.
Okay, let's figure this out. Here’s something else I want to get somewhere or make it myself
disk drive controller. Yes, there are no diagrams. One friend threw two boards.
He says that from such a controller. One has a large LSI KR1818VG93. On
I have this circuit, but I don’t know how to connect it, because it’s in the wiring
the main connector has strange pins, for example "DC00","DC18" (c
inverting the signal), and there is no TR-DOS on it. The second has the same connector, but
there is another one like COM and one like LPT. I think it's for the printer. It stands on it
timer KR580VI53, port KR580VV55A and two KR580VV51A. Maybe you can help with
connection. I will soon send you the diagrams (the quality is wow!!!) and photos of these blocks.
Hello BYTEMAN
ah, yes. exactly.
It was in RTshki that the “joint” scheme was stitched.
You can probably get their firmware ^_~
but you can remove them for nothing (including a piece of binding), and sew up a regular one in RFki
Specov's basic.
of course then you will lose the ability to load byte cassettes with
"cericopic", but with the rest there will be fewer problems.
holes DOS connects without any problems at all.
try to look for DOS holes for bytes - they were stuck into the connector in the “butt”
;) byte
Hello BYTEMAN
BYT> I'm afraid that these boards are from Byte 01. But I have a regular one. Maybe you can help
BYT> find TR-DOS firmware?
There is enough of this goodness on the site!
Hello BYTEMAN
BYT> I'm afraid that these boards are from Byte 01. But I have a regular one. Maybe you can help
BYT> find TR-DOS firmware?
Don't be afraid ;)
For Byte 01, this is not even a hole-dos, but just a bunch of registers and multiplexers for
connecting Byte to the "tower".
And I’m talking about Hole dos for bytes (you know, simple ones, white ones, they also have
the word "Byte" is written, without any "01" ;) )
And I wouldn’t solder a hole-DOS controller different from those that are plugged in
I advised that I personally repaired 2 of these bytes. A cloud of wires, it’s not clear what
and where it leads. And definitely, after a month, at least one, and it will fall off.
Hello Sinus
I will send the FLOPPI controller diagram and photos to anyone who needs it on IMAIL sash-a@nm.ru.
But there is no TR-DOS ROOM on it. How to connect it?
Hello BYTEMAN
I already have a controller, so no thanks ;)
and if there is no ROM on it, then this board is tr-dosa for computers with 64kb ROM, when in
One ROM is flashed with 48 BASIC, 128 BASIC, TR-DOS and some other crap.
you need to find an output on the controller, something like TR-DOS-ON (I don’t remember how
it is called correctly) and calculate the level of its activity (high or
low)
then solder the tr-dos ROM onto one of the two byte ROMs with a sandwich,
connecting where necessary the extra leg of the address
and then quite simply:
when the TR-DOS-ON signal is active, you turn on the ROM with TR-DOS, otherwise the usual ones.
I saw a similar controller. There was such a system there.
PS if you want to really help figure it out, it’s better to come here in the form of attachments
the photos arrived, and not to some mythical email.
Hello Sinus
Sin> I already have a controller, so no thanks ;)
Sin>
Sin> and if there is no ROM on it, then this board is tr-dosa for computers with 64kb ROM,
Sin> when 48 BASIC, 128 BASIC, TR-DOS and more are flashed in one ROM
Sin> some bullshit.
Sin>
Sin> you need to find an output on the controller, something like TR-DOS-ON (not
Sin> I remember how it is called correctly) and calculate its level
Sin> activity (high or low)
Sin>
Sin> then solder the tr-dos ROM onto one of the two ROMs with a sandwich
Sin> byte, connecting where necessary the extra address leg
Sin>
Sin> and then quite simply:
Sin>
Sin> when the TR-DOS-ON signal is active, turn on the ROM with TR-DOS, otherwise
Sin> regular.
Sin>
Sin> I saw a similar controller. There was such a system there.
Sin>
Sin> PS. if you want real help to figure it out, you better come hereSin> photos were sent as attachments, not to some mythical email.
Send it to me at andrei1988@mail.ru [mailto:andrei1988@mail.ru] please!
Hello BYTEMAN
Who needs a diagram - DOWNLOAD IT!!! www.sash-a.nm.ruschematics.png