don't let me die...

Subzh, someone please post the turbo+hd circuit, the one with the VG93 turbo on TM2 and fine
logic. Thanks in advance.

Well, bye! Tigrr from -■Brainwave^X-Project■-

21 Oct 00 03:30, Igor Turashev wrote to All:

IT> Subzh, please post a thread, the turbo+hd circuit, the one with the VG93 turbo on the TM2
IT> and fine logic. Thanks in advance.

And there it’s simple - at STEP=0 the double frequency is turned on, and when the processor accesses the VG, the single frequency is turned on. It is switched by a multiplexer,
which is of course very bad.

KF> And there it’s simple - at STEP=0 the double frequency is turned on, and when
Well, it’s a no brainer, according to the scheme everything seems to be OK - but it doesn’t want to read HD disks and
that’s all here :(

KF> the processor accesses the VG back to single. It switches
KF> multiplexer,
KF> which of course is very bad.
It’s just without a multiplexer, using LL1, LI1 and LA3, I just
assembled it - it doesn’t want to work, but we only have it on paper, it’s not a fact that there’s an error somewhere, there’s no file left :(

KF>> a multiplexer, which of course is very bad.
IT> There is just no multiplexer, using LL1, LI1 and LA3,

This is a multiplexer if 2 frequencies are supplied there, or there
there should be a trigger. Why is it so difficult, the VGshku probably doesn’t need to be clocked with an ideal meander - make a circuit that either
passes all pulses (2Mhz), or passes every second one.

IT> I just assembled it - it doesn’t want to work, but we have it only on paper,
IT> it’s not a fact that there is no error somewhere, there is no file left. :(

So what’s the problem? Take it and see if there are impulses there or not.
Most likely it’s soldered wrong.

KF> This is a multiplexer if 2 frequencies are supplied there, or there should be a
KF> trigger. Why is it so difficult, VGshku is probably not at all
There is a trigger + logic. There is a separate circuit on the PDA, I’m just too lazy to reassemble
:)

KF> must be clocked with an ideal meander - make a circuit that either
KF> passes all pulses (2Mhz), or passes every second one.
Well, I didn’t come up with the circuit. :)

IT> There are pulses there, but I can’t say which ones, I don’t have an oscilloscope.

So you can see everything well without an oscillator - solder a wire with a resistor to the computer’s video signal (or to one of the colors - in a non-black and white case) - the monitor screen will display all the signals better oscyla ,')

Always yours Combin8or/PHT

YV> So you can see everything well without an oscil - solder the wiring with a
YV> resistor to the computer video signal (or to one of the colors - in a non-b&w
YV> case) - the monitor screen will display all the signals cooler than the oscil,')
I'll have to take a look, I'm not up to something like that guessed it :)

By the way, to everyone who wrote to me with soap - soap doesn’t leave me further than 5052, so
sorry for not being able to answer :(

IT> We’ll have to see, I didn’t think of something like that :)

It will be a problem, believe me. Many Spectrum signals are even better to watch this way, because the monitor is synchronized precisely with the Spectrum, so you can not only see all sorts of signals, but also see how they phase relate to the screen image (i.e., with the screen
signals).

Always yours Combin8or/PHT

YV>>> So you can see everything well without an oscil - solder the wires with
YV>>> resistor to the computer video signal (or to one of the colors - not

KF> It’s so good to watch only signals with frequencies up to hundreds of kilohertz,
KF> and in the spectrum everything is a little faster...

But that’s not true, you probably haven’t tried it.
But I always use this, and I can confidently say where 3.5 MHz is, where
1.75, etc. In general, up to 7 MHz everything is perfectly visible and, most importantly, understandable.
(imagine, for example, a 3.5 MHz signal - these will be vertical dark and light stripes, one Spectrum pixel thick)

Always yours Combin8or/PHT

KF>> kilohertz, and in the spectrum everything is a little faster...
YV> But that’s not true, you probably haven’t tried it.

I tried it. There is a very small sliver of the processor.

YV> And I always use this, and I can confidently say where 3.5 MHz is,
YV> where 1.75, etc. In general, up to 7 MHz everything is perfectly visible and, most importantly,
YV> is understandable.

Visible, but nothing is clear.

YV> (imagine, for example, a 3.5 MHz signal - these will be vertical dark
YV> and light stripes, one Spectrum pixel thick)

Well then! And my clump should be like this:
___
|___________| |

Will I be able to see this? What about horizontal pulses?

KF> Well then! And my clump should be like this:
KF> ___
KF> |___________| |
| | |
dark stripe light

KF> Will I be able to see it?

Of course!

KF> And for example, lowercase pulses?

But this is no longer the case,') I’m not saying that everything is possible. But there are very few such signals, basically everything is correct. Although these can be seen on another
computer.

KF> - Origin: Long live the Great October Revolution! (2:5030/827.2)
communist? ,')

Always yours Combin8or/PHT

YV> Not very small - a period two pixels thick.
YV> Although if you look at a tube b/w TV... ;)

They are all tube ones, even semiconductor ones... Two pixels
can be clearly visible, but with a magnifying glass.

YV>>> 3.5MHz, where 1.75, etc. In general, up to 7 MHz everything is clearly visible and,
YV>>> the main thing is clear.

KF> I’ve been getting used to this since 48 spec, almost my entire Spectrum life.
KF> Of course this is a good way when there is no oscilloscope.

So that’s exactly what I’m talking about. Although I'm so used to it that it's probably better for me to look at some signals this way.')

KF> It’s so good to watch only signals with frequencies up to hundreds of kilohertz,
KF> and in the spectrum everything is a little faster...

You’re wrong to think so. have you tried the described method?
believe me, in 90% of cases it is much better than an oscilloscope.

All the best.
Dmitry.

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