Question about the branded ZX Spectrum 48K
ZXNet echo conference «hardware.zx»
Hello, All
I bought it, as usual, on eBay :) A childhood dream, tskt, it’s true. Rubber
buttons and all that.
So I would like to build an attachment for it for fast (very fast) loading
snapshots, because loading from the tape is, of course, nostalgic, but time
shortage
Are there any ready-made solutions in nature that fit into his famous slot, or
Do you need to reinvent the sunset manually again?
Hello, tnt23
Start with this -
http://sblive.narod.ru/ZX-Spectrum/TurboTapeLoading/TurboTapeLoading.htm
(dump download in a minute). Perhaps the rest will not be needed.
http://www.speccy.org/trastero/cosas/droy/zxflash/zxflashcart_e.htm
http://zx.pk.ru/showthread.php?t=3867
Hello fan
fan> I would not have raised my hand to see such a rarity ;) (I'm serious).
Has everyone been here before?
http://user.tninet.se/~vjz762w/fixuspec.html
I’m already thinking about converting my “+” to S-Video.
Hello caro
car> You can.
Super, thanks :v2_clapp;
More; question: the composite video signal can be removed from the connector (Under side B, pin
15 - marked as Video)?
Hello fan
fan> I would not have raised my hand to see such a rarity ;) (I'm serious).
So no soldering is required there. In issue 2 there are 8 panels, I stuffed them into them
housing and free. Since 64K chips are supposed to be shoved, even jumpers on
There is no need to touch the board (I hope).
(Actually, I’m a little annoyed - I thought I was buying 48K, but I arrived like this
here's a "flawed one.")
fan> You can, but showing it will be almost as scary as with HF ;)
fan> (at least for me it’s like this:).
Come on, it can’t be worse than through the antenna input!
Hello icebear
ice> Has everyone been here before?
ice>
ice> http://user.tninet.se/~vjz762w/fixuspec.html
ice>
ice> I’m already thinking about converting my “+” to S-Video.
Yes, I was here too. While you don’t want to cut or solder something in the original
gland - I'll try the composite first, especially since I only have on TV
it is (and in another SCART, but it is unclear whether S-Video can be installed in that SCART).
Hello, tnt23
As it turned out, it is actually not 48K, but 16K, but issue 2. To
to upgrade to 48K, you need to deliver 4 logic packages and 8 memory packages.
Is it possible to install 4164 (or 565RU5G) instead of the 4532 recommended by the datasheet?
Hello, tnt23
tnt> As it turned out, it is actually not 48K, but 16K, but issue 2. To
tnt> upgrade to 48K, you need to deliver 4 logic packages and 8 packages
tnt> memory.
I wouldn’t even raise my hand to see such a rarity ;) (I’m serious).
tnt> Another question: the composite video signal can be removed from the connector (Under side
tnt> B, pin 15 - marked as Video)?
It’s possible, but it will be almost as scary to show as with HF ;) (at least
At least that's how it is for me :).
Hello, tnt23
tnt> ..Is it possible to put 4164 (or) instead of the 4532 recommended by the datasheet?
tnt> 565RU5G)?
It's possible.
Hello, tnt23
tnt> Another question: the composite video signal can be removed from the connector (Under
tnt> side B, pin 15 - marked as Video)?
Judging by the diagram, this is the input signal of the TV modulator.
You can try to connect, just pay attention to the board
There is a jumper (judging again from the diagram) marked “VID”.
The jumper must be soldered.
Hello icebear
ice> Quote:
ice> Message from fan
ice> I would not have raised my hand to see such a rarity (I'm serious).
Not that quote and not that pretzel ;)
tnt> So no soldering is required there. Issue 2 has 8 panels,
tnt> stuffed the cases into them and was free.
I see (I forgot about the coolness of Issue 2 :D, I thought I would have to solder).
tnt> and such a “flawed” one arrived
Yes, this is just a cool rarity :) I would adopt him as is;)
tnt> Come on, it can’t be worse than through the antenna input!
Well, you yourself wanted this (scary picture in the From Coaxial attachment)%)
File: 20061012-174817-880.jpg http://zx.pk.ru/attachment.php?attachmentid=3913
Hello caro
car> Judging by the diagram, this is the input signal of the TV modulator.
car> You can try to connect, just pay attention to the board
car> there is a jumper (judging by the diagram again) marked "VID".
car> The jumper must be soldered.
I soldered the jumper just in case, but before fencing the connector, I want to
understand:
- is any capacitor needed on this line between the spec and the TV?
- the output stage from which this signal is removed (and fed to the modulator),
is an emitter follower loaded with a 360 ohm resistor. Is it necessary
Should I change this resistor to 75 ohm?
Hello fan
fan> Not that quote and not that pretzel ;)
fan>
fan>
fan> I see (I forgot about the coolness of Issue 2 :D, I thought I would have to solder).
fan>
fan>
fan> Yes, this is just a cool rarity :) I would adopt him as is ;)
fan>
fan>
fan> Well, you wanted it yourself (scary picture in the From Coaxial attachment) %)
This cool rarity can always be returned to the 16K version. Popped in today
"Chip and deep", bought four cases of multiplexers and logic, then fumbled in
in the box there is a package with old 565RU5, I stuffed it into the panels and trudged along :) That is, not yet
I’m really struggling, it doesn’t work very well with the modulator, but realizing 48K is all
easier.
And the picture - well, you can’t show such pictures at night, especially monochrome ones
:) What clone is this picture from?
Hello fan
fan> It is colored, just not painted ;)
fan>
fan>
fan> This is a native plus (by gnus, Issue4S board), but it shows like this
fan> scary... The area of the upper and lower parts of the curb is clearly distinguishable.
fan> (portrait of the bottom -
fan> http://sblive.narod.ru/ZX-Spectrum/Other/ZX-Spectrum-Plus-BT.jpg)
fan>
fan> Everything works for me anyway (IMHO the output is standard).
What does "standard output" mean - you remove the composite from the edge connector?
Hello, tnt23
tnt> And the picture - well, you can’t show such pictures at night, especially
tnt> monochrome
It's colorful, just not painted ;)
tnt> Which clone is this picture from?
This is a native plus (by vile, Issue4S board), but it shows so scary... Obviously
the area of the upper and lower parts of the curb is distinguishable.
(portrait of the bottom -
http://sblive.narod.ru/ZX-Spectrum/Other/ZX-Spectrum-Plus-BT.jpg)
tnt> - is any capacitor needed on this line between the spec and the TV?
tnt> - output stage from which this signal is removed (and supplied to
tnt> modulator), is an emitter follower loaded with a resistor
tnt> at 360 ohms. Does this resistor need to be changed to 75 ohm?
Everything works for me anyway (IMHO the output is standard).
Hello, tnt23
tnt> What does “standard output” mean - you remove the composite from the edge
tnt> connector?
Uh-huh.
Hello fan
fan> Does this screenshot look a lot like mine? ;)
fan> IMHO attaching an S-Video output in this case will not help, because
fan> signals are taken from almost the same point where the garlands
fan> powder catches all digital special effects...
Yes, almost one to one.
I added a transistor cascade between the spec and the TV, like the bourgeois in the link (only
I didn’t have BC557, I dug up BC337), it became better with brightness and colors
a little. At least the yellow one looks like yellow :v2_wink2;
By; Ideally, you should take an oscilloscope and crawl around the board, see where each
cases interfere with power supply.
fan> Have you tried to upload "turbo dumps x4" to MP3?
No, for now only regular mp3s. I tried to convert Hyper Activ to turbo -
It loads, but freezes approximately in the middle.
Hello fan
fan> I have an assumption that such a signal is already coming from the matrix... :
fan> I also tried to poke air conditioners like that pretzel, but
fan> the result remained the same (and the special effects even seemed to be stronger
fan> :v2_lol; ).;
From a resistor matrix? In principle, that part could also be improved by
power (as in Atari super video mods), but the main noise probably comes from the memory and
another figure, so that’s where you need to look. My friend has two air conditioners -
one somewhere in the area of the input jack (9V?), the second on the chip that deals with
color generation. Not enough :v2_conf3;
fan>; Try increasing the volume a little, it should help.
The volume level in my player is at the limit. But a strange thing: it started to load
Hyper Active in turbo mode (less than a minute really!) after I
I re-compressed it to 320Kbps and played with the codec settings.
In general, pure alchemy :v2_biggr:
Hello fan
fan> Uh-huh .
I built some kind of Interface II from a piece of mole rat and two connectors :) removed
composite signal - yes. That is, noticeably better than through the antenna input, but
still depressing.
In between, I use an 80mm disc player to load CD/MP3 :) To disk
fits approximately 180M, a typical 48K game, compressed at 320Kbps, takes 9-10M.
Hello, tnt23
tnt> In theory, you should take an oscilloscope and crawl around the board to see
tnt> where which enclosures interfere with the power supply.
I have an assumption that such a signal is already coming from the matrix... :\n
I also tried to poke the air conditioners like that pretzel, but the result remained
the same (and it seems that the special effects have even become stronger :v2_lol; ).;
tnt> I tried to convert Hyper Activ to turbo - it loads, but approximately
tnt> hangs in the middle.
Try increasing the volume level a little, it should help.
Hello, tnt23
tnt> I built something like Interface II from a piece of mole rat and two connectors
tnt> took a composite signal - yes. That is, noticeably better than through
tnt> antenna input, but still depressing.
Does it look a lot like my screenshot? ;)
IMHO attaching an S-Video output in this case will not help, because the signals
are removed from almost the same point where the garlands of loose flowers catch everything
digital special effects...
tnt> In the meantime, I use an 80mm disc player to load CD/MP3
tnt> The disk fits approximately 180M, a typical 48K game, compressed at 320Kbps,
tnt> takes 9-10M.
Have you tried uploading “turbo dumps x4” to MP3?
Hello fan
fan> No, with logical. They shouldn’t have shoved this color difference in
fan> internally... As if the encoder specially designed for this Boredo encoder was distorted...
fan>
fan>
fan> It’s no longer tempting to bet more. There seem to be multiplexers, percents and
fan> matrix without air conditioners at all. This is already some kind of constructor %) And I
fan> I highly doubt it will help.
Well, in general, yes, moderation is needed in everything. I'll try not to delve into this spec
inside - it’s already quite playable, but if Spectrum+ arrives, you can
will dig deeper :)
fan> Studio settings! :) (as well as the names of the program, codec / version and
fan> other details).
Compressed just before writing to Nero disk using Lame
codec (I don’t know if it’s included in the Nero package or got lost somewhere):
fixed bitrate 320, speed-quality ratio 5.
Hello, tnt23
tnt> From a resistor matrix?
No, with logical. They shouldn’t have shoved this color difference inside...
It’s as if the encoder specially designed for this Boredo encoder was remade...
tnt> My friend has two air conditioners - one somewhere in the area of the input jack (9V?),
tnt> the second one on the chip, which deals with color generation. Not enough
It’s no longer tempting to bet more. There seem to be multiplexers, percent and matrix
no air conditioning at all. This is already some kind of constructor) And I strongly doubt that
will help.
tnt> The volume level in my player is at the limit. But a strange thing: it became
tnt> boot Hyper Active in turbo mode (less than a minute
tnt> indeed!) after I re-compressed it to 320Kbps and
tnt> played with the codec settings.
Settings in the studio! :) (as well as the names of the program, codec / version and others
details).