<none>

Hello guys! Can someone tell me how to make an acepeshka for your Spectrum? Well, I saw some kind of Kyiv program, but there it
was made on some kind of cunning microcircuit that the guys told me that in Lvov we don’t have one like that on the radio market. Advise
something.
If possible, then even to the point that we will agree to send
the microcircuit, and I would buy it.

With respect, Andrey.

Fri Jun 26 1998, Andrij M Stegnitskiy writes to All:

AMS> Hello guys! Maybe someone can tell me how to make an acepeshka on

^^^^^^^^^^^^^^^
As far as I understand - an analog-to-digital converter?

AMS> your Spectrum? Well, I saw some kind of Kyiv program, but there
AMS> it
AMS> is made on some kind of cunning microcircuit that the guys-
AMS> told me that in Lvov we don’t have one like that on the radio market. Advise
AMS> something.

What kind of microcircuit is this? I saw the diagram on 1107PV1, but there is a lot of fittings and you need
-6V. Somehow I wanted to do it on 572PV4, but nothing happened - I don’t know at what moment to read the data (while reading there was always some kind of nonsense), and in the literature there is contradictory data :( I made a simple one on 155IR17 + 572PA1. I asked people
to give address of the port on which to hang the ADC so that there is at least some kind of standard -
nobody answered. In some Format or ZX-Power (I don’t remember exactly) there is a program for digitization, but it’s not clear what port it works with. So it looks like
ADCs on the Spectrum are not very favored :(

$$$ With best wishes... Alex

Hello, Alex!

29 Jun 98 Alex Gofman, hoping that Andrij M would read, wrote:

AG> What kind of microcircuit is this? I saw the circuit on 1107ПВ1, but there is a lot of fittings and you need -6V. Once I wanted to do it on
AG> 572PV4, but nothing worked - I don’t know at what point

But in the ATM-TURBO-512+ some simple ADC was connected to 1113PV1, although there
you also need a negative voltage.

AG> to read the data (when reading constantly it was some kind of nonsense), and
AG> there is contradictory data in the literature :( I made a simple
AG> on 155IR17 + 572PA1. I asked people to give the port addresses on
^^^^^^^^^^^^^^^^
And where are you actually ADC?? Or did you somehow use PA1 “inside out”?

All the best.
Roman.

RM> ^^^^^^^^^^^^^^^^
RM> Where is your actual ADC?? Or did you somehow use PA1 “inside out”?
It’s all in IR17 - the sequential approach register (that’s what it’s called, I think). It has a single input to which 0 or 1 is supplied and a 12-bit
output. So, with each clock pulse, the number at the output changes (in
which direction I don’t remember). This number goes to PA1, and from the output of PA1 to the comparator CA3
(I also forgot the series:), the second input of which is supplied with the signal under study, and from the
output the signal goes to IR17. And when a signal appears at the “Ready” output of IR17, the data is written to the buffer register. This is how we convert A to D
:)
The speed is really low (clock 3.5 MHz), but you can see the shape of the complete video signal
:)

Finally, I had the opportunity to run around the “G.S.v R.” demo. and
read the introductory words :) Thank you very much for those letters that
are written next to my name, I didn’t understand anything, but it’s still nice! :)
I liked the demo, if it weren’t for the profanity, there would have been a steering wheel!
I was especially struck by the wonderful music! :) And how did you manage to do it :)))
We noticed such a glitch - if in the bend of the sea-ocean :) you press the keys
directing the hero to a dead end, then you can see a flickering around :(
If it’s not difficult, add the definition of ATM extended memory - everything is
identical to the Pro, only the FDFD port.

Hasta la vista.
Tim Kelly

PS Why ZX.SPECTRUM is written there in capital letters, and REAL.SPECCY - in small letters? Some kind of discrediting :)

01 Jul 98 Tim Kelly crushed bedbugs for Renat Mamedov, and I ...

TK> Finally, I had the opportunity to run around the demo
TK> "G.S. in R." and
TK> read the introductory words :) Thank you very much for those
TK> letters that are written opposite my name, I didn’t understand anything
TK>, but it’s still nice! :)

I'm such a scoundrel :) run away...

TK> I liked the demo, if it weren't for the profanity,
TK> there would have been a steering wheel! in a hurry
too much...

TK> I was especially struck by the wonderful music! :) And how did you manage it
TK> :)))

You can thank Zhenya Malkov - he recommended a muzaker to me :))

TK> Such a glitch was noticed - if in the bend of the sea-ocean :)
TK> you press the keys that direct the hero to a dead end, then you can see
TK> flickering around :(

Where are you going there tried :) I'll try to do it.

TK> If it's not difficult, add a definition of extended memory
TK> ATM - everything is identical to the Pro, only the FDFD port.

details in soap, please. I have other information.
I have nothing to check, so global glitches are possible.

TK> PS And why is ZX.SPECTRUM written there in capital letters, and
TK> REAL.SPECCY - in small letters? Some kind of discredit! :)

and there are severe chests of drawers! :) and here are the peoplesimpler - he doesn’t play buns :) (c) your
words once.

but in fact - the devil knows why...

Be healthy!
Renat Mamedov

Hello, Alex!

01 Jul 98 Alex Gofman, hoping that Roman Milukov would read, wrote:

AG> Everything lies in IR17 - a serial register
...

Ahh...

AG> The speed is really low (clock 3.5 MHz), but the shape
AG> of the full video signal You can watch it :)

How is this?! CA3 seems to be very slow (comparatively)!

All the best.
Roman.

used?

And the register is kind of tricky... Probably there is a dependence
on the output of the comparator and the data in the register.

W!7h Be$7 W!$he$, FK0.

AG>> standard
KF> Hang it on AY and no tricky port is needed. Only for that
KF> register that is y 12-AY.
But this is not necessary (IMHO) - after all, AY-Mouse hangs on AY, again there will be a bunch of glitches!

Come on, Kirill, pack!
[Team vp Alos MUST DIE!]

AG>> Asked from

KF> people
KF> ~~~~~~~~~~~~
KF> As in ATM turbo? I don’t understand how this can work.

What’s like in an ATM turbo?

KF> Can you give me a diagram?

I’ll provide a block diagram, if you need more details, write:
____
______________| |
_____ | ____________|Buffer|---- D0...D8
| |-| | ____ |reg.|
| | | | | |____|
| IR17|---*-|PA1 |--|
|-|_____| |___| | ___
| |__| |
| |CA3|---|
| Uin. -----|___| |
|________________________________|

[...]

KF> Hang it on AY and no tricky port is needed. Only for that
KF> register
KF> which
KF> 12-AY has.

This is possible, but who or rather what supports it?

RM> How is this?! CA3 seems to be very slow (comparatively)!

Sorry, I made a mistake not 3.5 MHz, but 1.77 MHz - and don’t say that it won’t work - it works
after all :)

06 Jul 98 Alex Gofman hoping that Roman Milukov would read,
wrote:

RM> How is this?! CA3 seems to be very slow (comparatively)!
AG> Sorry, the mistake was not 3.5 MHz, but 1.77 MHz - and don’t say that
AG> won’t work - it works :)

Well, in analog things “it works!” not an argument...
Although I'm not against it... :)
But imho if you use specialized microphones, the circuit will be
smaller. This was done in ATM-TURBO, there was 1113PV1.
And in TURBO-2+ there was already an ADC circuit with IR17. :)

All the best.
With respect Roman.

Wed Jul 08 1998, Roman Milukov writes to Alex Gofman:

RM> But imho if you use specialized microchips, the circuit will be
RM> smaller. This was done in ATM-TURBO, there was 1113PV1.
RM> And in TURBO-2+ there was already an ADC circuit with IR17. :)

I wouldn't mind using special. mikruhu, but from the ones I have 572PV4 (there is no necessary information on operation and connection) and 1107PV1 (too many voltages are needed :) I can’t assemble a normal ADC, or rather for the first I can’t, and for the second I’m lazy :)

To: All
Who can still tell me which port is better to connect the ADC to?

ES> But this is not necessary (IMHO) - after all, AY-Mouse hangs on AY, again there will be a bunch of
glitches
ES>!

And who [.skip.] came up with it? :-(

Then you need to make a normal 8-bit port. You can use Kempston!
But... in a _MASDAY_COMPUTER_TYPE_SCORPIO_ it will be necessary to disable
/DRQ and /INTRQ from the VGshka from the port with tr-dos disabled.

W!7h Be$7 W!$he$, FK0.

AG> This is possible, but who, or rather what, supports it?

There was some kind of program specifically for AY. But finding it is unrealistic
like any other for the ADC. I wrote one program - also for AY or
Kempston (4-bit ADC).

W!7h Be$7 W!$he$, FK0.

08 Jul 98 Alex Gofman, hoping that Roman Milukov would read, wrote:

AG> I wouldn’t mind using a special one. mikruhu, but from the available
AG> I have 572PV4 (there is no necessary information on the work and

U... This is a cool thing, judging by the description that I HAVE.
Only it is in a paper book.
It has eight analog inputs, its own RAM, the data from which is read into the computer
in DDP mode...

AG> connection) and 1107PV1 (a lot of voltage is needed :)

Yes here.

All the best.
Roman.

├┤i Alex & Roman !

[...]

AG> That: All
AG> Who will tell you which port is better to connect the ADC to?

On Kempston.

W!7h Be$7 W!$he$, FK0.

ES>> there will be a lot of glitches!

KF> And who [.skip.] came up with it? :-(

KF> Then you need to make a normal 8-bit port. You can use Kempston!
KF> But... in a _MASDAINE_COMPUTER_TYPE_SCORPIO_ you will need to disable

[*] - showing disrespect for the creators and users of the Scorpion PC

=== Cut ===

2. Clashes are extremely undesirable between different modifications of Spectrum-compatible computers (please respect
the creators and users of all types of our beloved Speccy) [*].

=== Cut ===

KF> There was some kind of program specifically for AY. But finding
KF> it is unrealistic,
KF> like any other for the ADC. I wrote one program - too

By the way! I looked here, in Online-27 they published an ADC circuit for 1113PV1 linked to AY! Why invent a new port?
And if there is an AY mouse, there should be either an external connector or a toggle switch imho...

All the best.
Roman.