DMA sound

tell us about the subject and other ZX audio-out devices, besides GS and the usual AY/YM
who has it, is it worth supporting in projects, how to manage them programmatically?

I wonder if there is a .mod player for the subject. it would be nice to have mods either on GS
or to play on the subject, depending on the system.

true, the OS should do this, but you won’t have to wait for it (at least some of it) ;)

... Ay_Emul: Cobra_Perindedo

KK> │ Hi _All_ !
KK> L==----- - -
KK>
KK> tell us about the subject and other ZX audio-out devices, besides GS and
KK> the usual AY/YM, who has it, is it worth supporting in projects, how to manage them
KK> programmatically?
Kovoksov is still a complete garden and the good old beeper...

KK>
KK> I wonder if there is a .mod player for the subject. it would be nice to have a mod for either
both for the subject and for the kovoks there is a separate
KK> GS, or to play on the subject, depending on the system.
In fact, these programs are self-sufficient, so download them from the depths of the trash and
enjoy life..

wbr, jtn.

On Mon, 01 Nov 04 18:23:49 +0300, Konstantin Konstantinov wrote:

KK> tell us about the subject and other ZX audio-out devices, except GS and regular
KK> AY/YM
KK> who has it, is it worth supporting in projects, how to manage them
KK> programmatically?

Covox, DMA-sound, 4-channel covox AKA sound drive.

KK> I wonder if there is a .mod player for the subject.

I’m also interested.

KK>> زءسسثءضةشإ ذزد سءآض ة ؤزصاةإ ZX audio-out صسشزدتسش×ء, ثزدحإ GS ة
KK>> دآظقخداد AY/YM ص ثداد إسشط, سشïةش جة ذدؤؤإزضة×ءشط × ذزدإثشءب, ثءث ةحة
KK>> صذزء×جرشط ذزدازءححخد?
VK> ثد×دثسد× إفإ ذدجخظت دادزدؤ

ؤء, ذزد خةب ر ة عءآظج.

VK> خص ة آةذإز سشءزظت ؤدآزظت...

خص ـشد صضإ سجةغثدح ضإسشدثد ;)

KK>> ةخشإزإسخد, إسشط جة ؤجر سءآضء ذجإإز .mod'د×. آظجد آظ خإذجدبد حدؤظ جةآد خء
VK> ة ؤجر سءآضء ة ؤجر ثد×دثسد× ةحإإشسر دشؤإجطخظت

ص ثداد? اؤإ?

KK>> GS, جةآد خء سءآضإ ةازءشط, × عء×ةسةحدسشة دش سةسشإحظ.
VK> سدآسخد ـشة ذزدازءححظ سءحدؤدسشءشدقخظإ, شءث قشد سثءقءت ةب ةع خإؤز
VK> ذدحدتثدخإشء ة زءؤصتسر ضةعخة..

... شءث خصضخظ ذزةحإزظ زءآدشظ/ةسبدؤخةثة, ء خإ ادشد×ظإ ذزدازءححظ

... Ay_Emul: CPC-Telegramm16_2

VK> Actually, these programs are self-sufficient, so download them from the depths of the
VK> trash and enjoy life..
KK> ... so we need examples of work/source codes, not ready-made programs
I haven’t seen the source codes on the subject, dig the Adventurer magazines, there was info on the
device and the player itself in the application. Regarding GS - the player can be torn out from anywhere or read the documentation, everything is at the above URL.

But on Kovox you can only listen to mods, the processor is 100% clogged, so
you don’t need support in your programs IMHO..

wbr, jtn.

KK>> ... شءث خصضخظ ذزةحإزظ زءآدشظ/ةسبدؤخةثة, ء خإ ادشد×ظإ ذزدازءححظ
VK> ذد سءآضص ةسبدؤخةثد× خإ ×ةؤإج, ثدذءت ضصزخءجظ Adventurer شءح آظجء ةخئء ة ذد
VK> صسشزدتسش×ص ة سءح ذجإإز × ذزةجدضإخةة.

ذدسحدشزةح

VK> ًد ذد×دؤص GS - ذجإإز حدضخد ×ظؤزءشط بدشط دشثصؤء ةجة ذزدقةشءشط ؤدثصحإخشءأةہ,
VK> ×سإ إسشط خء ×ظغإصثءعءخخدح URL.

سذءسةآد, خءغإج

VK> Hص ء خء ثد×دثسإ mod'ظ حدضخد شدجطثد سجصغءشط, ذزدأإسسدز عءآة×ءإشسر 100%, شءث
VK> قشد ة ذدؤؤإزضثء × س×دةب ذزدازءححءب خإ خصضخء ةحبد..

إخشد شدقخد, بدشر... سحدشزر قشد عء ذزدازءححء ;) ×دآفإح, خءتؤص ×زإحر - آصؤص ة ةب
ةسثءشط

KK>> who has the usual AY/YM, is it worth supporting in projects, how to
KK>> control them programmatically?
KF> Covox, DMA-sound, 4-channel covox AKA sound drive.
There is also beeper, oddly enough. ;) And the last piece of hardware is written "SounDrive" and nothing else. :|

Wbr, deadie.hs.cpu // [speccy] [6912] [milk&crackers] [KoYan]

... in my head: full silence

KK>>> tell us about the subject and other ZX audio-out devices, besides GS and
KK>>> who has the usual AY/YM, is it worth supporting in projects, how
KK>>> control them programmatically?
KF>> Covox, DMA-sound, 4-channel covox AKA sound drive.

WK>> "SounDrive" and nothing else. :|
KF> I myself know a little English. So it's sound drive.
I'm guessing. =) But IT IS SPELLED with ONE “D” and in one word, too.

WK>>> There is also a beeper, oddly enough. ;) And the last piece of hardware is being written

The guys forgot about the quad AY. In our Lugansk magazine there was a diagram
and a converter of ordinary melodies into frames. Magazine DEPTH 1.
True, I didn’t see anything except this converter :)

Bye Waldemar!

-=US5MTL=-

... And you used the package FTN?

AD>
AD> The guys forgot about the AY quad. In our Lugansk magazine there was a diagram
;-) there seemed to be a discussion about digital
AD> and a converter of ordinary melodies into frames. Magazine DEPTH 1.
AD> True, I didn’t see anything besides this converter :)
yeah, we remember, we remember, but you’re still behind the times, there’s already an editor almost
fully functional.

wbr, jtn.

AD> The guys forgot about the AY quad. In our Lugansk magazine there was a diagram
AD> and a converter of ordinary melodies into frames. Magazine DEPTH 1.

and how much does the sound improve?:)

Sincerely, Vadim.

... sound: Stars On 45 - Michael Jackson Medley [stopped]

VK> yeah, we remember, we remember, but you are still behind the times; there is already an editor
VK> that is almost fully functional.

Yes, I am very far behind. They no longer sell CDs on the radio market.
And my Pentagon burned down. Not by key I inserted the ROM :(
Now only the emyl remains. And a couple of dozen system programs on the compact. Half of which are useless for
me. ADS, RDS, Tape-Copy, etc.

Bye Vassili!

AD> The guys forgot about the AY quad. In our Lugansk magazine there was a schematic
AD> and a converter of ordinary melodies into frames. Magazine DEPTH 1.
AD> However, I didn’t see anything except this converter :)
We must assume that “quad-AY” exists in only a few (!) copies on
the entire planet. So supporting such devices is an extremely thankless task. ;(

AD>
AD> Yes, I am very far behind. They no longer sell CDs on the radio market.
;-)
AD> And my Pentagon burned down. Not according to the key, the ROM-xy inserted:(
completely burned out? What’s stopping you from flashing a new one?
AD> Now only the emyl remains. And a couple of dozen
AD> system programs on the compact. Half of which are useless for
AD> me. ADS, RDS, Tape-Copy ny, etc.
What about Virtual Trdos?

wbr, jtn.

VK> completely burned out? What’s stopping you from flashing the new one?

The ROM-ha pulled all the RAM with it. It was without panels.
Oh, I had a lot of fun while I was picking everything out and soldering the panels.
It still hangs (all square...and blinks), with new control knobs. Even the test ROM
does not turn on :(
Or it’s stuck under the socket somewhere, although it shouldn’t, I checked it with a Korean
tester:) or with the formation of the address. But it’s the processor that forms
and switches them, right?

VK> and what about Virtual Trdos?

I wrote, I want to know how much the disk costs :)

Bye Vassili!

... -= US5MTL =-

AD>> circuit and converter of ordinary melodies into frames. Magazine DEPTH 1.

VC> and how much does the sound improve? :)

I don’t know, but I remember that the scheme is not terrible.
Find the magazine and try to assemble it :)))
Share your impressions :)
From memory I report that there is a phase shift of the channels.
And the converter simply outputs (addresses) to an additional port.
Old melodies should start playing in a completely different sound.
Damn, I told it so much that I really wanted to :))))

Bye Vadim!

... -= US5MTL =-

02 Dec 04 08:50, Andrey Degtyarev -> Vassili Klimov:

AD> ROM-ha pulled all the RAM with it. It was without panels.
AD> Oh, and I had a lot of fun while I was picking everything out and soldering the panels.
AD> It still hangs (all square...and blinks), with new control knobs. Even
AD> the test ROM does not turn on :( Or it’s stuck under the socket somewhere, although it shouldn’t
AD>, I checked it with a Korean tester :) or with the formation of
AD> address. But it’s the processor that forms and switches them, right
AD>?

The processor has nothing to do with it, the screen will blink in squares and without any process at all.

Sincerely, Evgeniy.

... http://2065.nm.ru f2065_at_hotbox_ru icq_35078112

KF>>>>>> Covox, DMA-sound, 4-channel covox AKA sound drive.
WK>>>>> There is also a beeper, oddly enough. ;) And the last piece of hardware is written
AD>> The guys forgot about the quad AY. In our Lugansk magazine there was a diagram
AD>> and a converter of ordinary melodies into frames. DEPTH 1 magazine.
AD>> True, I didn’t see anything besides this converter :)

December 14, 2004 19:44, Konstanteen Denisov wrote Andrey Degtyarev:

>> circuit and converter of ordinary melodies to quadro. DEPTH 1 magazine

KD> What kind of Quadro AY?

Second co-processor on a separate port :)
So it turns out quad. L R + L` R`.

And on the channels there are as many as 6.
A B C + A`B`C`

KD> Do you have a circuit and a converter?

Look on the Internet, on the Speck archives.
This magazine will be there, no matter what.
It’s all there. And the circuit and the converter.
And a description of the work and, in my opinion, a couple of melodies
ready to use.
I only have it on a Speck disk.
And there’s nothing to watch The Pentagon burned down :(
I work in emul.
Good luck!

Bye Konstanteen!

... -= US5MTL =-

AD> ROM-ha pulled all the RAM with it. It was without panels.

It can’t be. How many times have I inserted it in the wrong direction? One time the ROM even began to glow from the inside... nothing was damaged. And why would it?
Moreover, *all memory* could burn out only in one case - a failure
of the power supply. Due to short circuit or other reasons. Well, the source
needs to be used with adequate power (250W from the PC is clearly overkill
if there is no HDD and CD-ROM). And besides, there is a wonderful recommendation
from a person and a submarine: turn on the zener diode at ~6 volts
in parallel with the +5v power supply, directly at the input point
to the board.

AD> Oh, I had a lot of fun while I was chewing everything out and soldering the panels.

But in vain. Any panel is a source of bugs.

AD> It still hangs (it's all square...and blinks), with new controls. Even
AD> the test ROM
AD> does not turn on :(

If it was the power supply that failed, then anything else could have burned out. If there is no
mattress, then with a very high probability the processor itself was damaged,
any microcircuits of the 531 and 1531 series, possibly 1818VG93.

First, you should remove everything unnecessary from the panels, including the ROM, VG
and processor. If there are no vertical, horizontal black and white stripes
and the screen is filled with bright white, the RAM or something in the logic is faulty.
Next, the processor is installed. If there is no mattress (vertical stripes)
, the bus is stuck.address/data, faulty logic (eg
address multiplexer), possibly faulty processor. If there is
a mattress, then the machine is practically working, everything is decided by a memory test and a lot of
small faults, but 48kb BASIC should already start.

--
Mm

On Thu, 02 Dec 04 13:20:40 +0300, Eugene Palenock wrote:

EP> The processor has nothing to do with it, the screen will flash in squares and without processing
EP> at all.

In order for the squares to appear on the screen, you need to fill
the video memory with something different from 00 or FF appearing there after
the power is turned on. No one except the processor can do this.

Why did you decide that after turning on the power the memory is full of 00 or FF? There
can be anything at all. There is even this type of protection of a ROM program
from _running_ on another machine - memory regeneration is turned off for a while, and then the contents are turned on and read. So this content
is unique for each individual microcircuit.

--
With respect, Andrey Mikheev.

AD>> Even the test ROM does not turn on :(

KF> If it was the power supply that failed, then anything else could have burned out. If there is no
KF> mattress, then with a very high probability the processor itself was damaged,

I have two processors that work the same way. One Z80A, the second VM1.

KF> any microcircuits of the 531 and 1531 series, perhaps 1818VG93.

pulled out altogether

KF> First, you should remove everything unnecessary from the panels, including the ROM, VG
KF> and the processor. If there are no vertical, horizontal ones. black and white stripes,
KF> and the screen is filled with bright white color - the RAM or something in the logic is faulty.

the cubes are colored, some are blinking

KF> Next, the processor is installed. If there is no mattress (vertical stripes)

cubes, it does not respond to the reset. :(

KF> - stuck address/data bus, malfunction of
KF> logic (for example,

rang after installing the panels, cleared all the snot, now everything is clean

KF> address multiplexer), possible processor malfunction. If so

And how check the multiplexers ?

KF> mattress, then the machine is practically working, everything is decided by the memory test and mass

The test ROM also does not work (for the 48th). Working 100%

KF> minor faults, but 48kb BASIC should already be start up.

Bye Kirill!

... -= US5MTL=-

AD> called after installing the panels, cleaned up all the snot, now everything
AD> is clean

In any case, writing to memory does not work. You can use an oscilloscope
(or by connecting it through a 500-1000 ohm resistor to the base of the transistor
video output) to look at the signals. It is still possible that the data bus is stuck.

17 Dec 04 02:50, Kirill Frolov says to Andrey Degtyarev:

KF> First, you should remove everything unnecessary from the panels, including the ROM, VG
KF> and the processor. If there are no vertical or horizontal black and white stripes,
KF> and the screen is filled with bright white, the RAM or something in the logic is faulty.
KF> Next, the processor is installed. If there is no mattress (vertical stripes)
KF> - the address/data bus is stuck, the logic is faulty (for example, the
KF> address multiplexer), the processor may be faulty. If there is a
KF> mattress, then the machine is practically working, everything is decided by a memory test and a lot of
KF> minor faults, but 48kb BASIC should already start.

What if, when the processor is removed, the mattress appears, but you can see how
individual bytes are constantly changing?
That is. Dots on the mattress appear and disappear. The points are scattered haphazardly, but new ones do not appear. Only those that flicker from the very beginning. The computer
naturally does not start with the processor, it tries, but cannot.

/// Mindlin
Roman Mindlin, MCP, MOS. ICQ UIN 8-=7=-5-=6=-5-=4=-4
...Interhelp BBS - Saint-Petersburg, RUSSIA.

RM> What if, when the processor is removed, the mattress appears, but you can see
RM> how individual bytes are constantly changing? Those. dots on the mattress
RM> appear and disappear. The points are scattered haphazardly, but new ones do not appear. Only those that flicker from the very beginning. The computer
RM> naturally does not start with the processor, it tries, but cannot.

I am a beginner, I warn you right away. But only in the echo, and not in the Spectrum.
I've seen such a non-removable mattress. But I didn’t solder anything (I didn’t know how, or rather I didn’t know
where then). But they pass on their own... with time. If you reset and
ON/OFF for a long time. BP. And most likely he is to blame. Check the heating parts, the voltage at the
output at the beginning of operation and then. Or better yet, change it completely.

Sincerely, Kostya Mashnenko

RM>> can you see how individual bytes are constantly changing? Those. dots on
RM>> the mattress appear and disappear. The points are scattered haphazardly, but
RM>> new ones do not appear. Only those that flicker from the very beginning.
RM>> The computer naturally does not start with the processor, it tries, but not
RM>> it can.

KM> I am a newbie, I warn you right away. But only in the echo, and not in the Spectrum.
KM> I've seen such a non-removable mattress. But I didn’t solder anything (I didn’t know how, or rather
KM> I didn’t know where then). But they pass on their own... with time. If long
KM> reset and ON/OFF. BP. And most likely he is to blame. Check
KM> the heating parts, the output voltage at the beginning of operation and then. Better yet
KM> change it completely.

I'll try. True, it now works from an AT power supply. We need to
measure the voltage there.

Bye!
comming soon: Amusement Park 2k4 <===70%-->
[ZX Realist] [ZX-Nastolgy] [Profi +] [SashaSoft]

22 Dec 04 17:10, Alexander Sharihin says to Roman Mindlin:

AS> Hello brother in mind, _Roman_!
AS> And it was morning, and there was a day on December 21, 04, and once Roman Mindlin
AS> wrote to Kostya Mashnenko about _RE: DMA sound_.

KF> address multiplexer), the processor may be faulty. If there is a
KF> mattress, then the machine is practically working, everything is decided by a memory test and a lot of
KF> minor faults, but the 48kb BASIC should already start.

and here is a question for backfilling:

- SP-48k "Cherepovets", ru5 changed, the percentage is known to be good, quartz, ROM are working:
after reset we have a normal working position, but until the moment of running the mash code
randomize usr [addr] or any command to run the
mash code [print usr, run usr ...] leads it either to a stupor or
simply performs an action comparable to reset

what kind of bug? Other basic commands and programs work great, no matter how much they “weigh”, but not the machine code

Sincerely, Evgeny Belov.

<10:52> Evgeny Belov write to Kirill Frolov:

EB> and here’s a question for backfilling:

EB> - SP-48k “Cherepovets”, ru5 changed, the percentage is obviously good, quartz, ROM
EB> are working: after reset we have a normal operating position, but before
EB> the moment the mash code is launched, randomize usr [addr] or any command
EB> to launch the mash code [print usr, run usr ...] puts it either into stupor
EB> or simply performs an action comparable to reset

EB> what the bug? Other basic commands and programs work with a bang,
EB> no matter how much they “weigh”, but not the machine code

Most likely (if the problem is in the hardware), there is a malfunction in the signal circuit
/Wait for the Z80 (you need to look at the circuit, but it’s useless to guess, it may turn out to be something
else). But the fact is that the command reading time of the Z80 is shorter than
the time of reading/writing data, therefore, when executing “code” (commands located in
RAM), a problem may arise if the Wait is formed incorrectly (the hardware does not
have time to read the command from RAM)...

The protoss escaped. The zerg dug in. It's time for me to call it a day. Ivan.

- Divorce the scheme, big and small... [Sprinter] Sprinter-II [Forth-CPU]

... ivan...@mail.ru * http://winglion.spb.ru * http://www.petersplus.ru

January 02, 2005 (and it was 10:52 then)
Evgeny Belov in his letter to Kirill Frolov wrote:

KF>> there is a mattress, then the machine is practically working, everything is decided by the
KF>> memory test and a lot of minor faults, but 48kb basic should already
EB> - SP-48k "Cherepovets", ru5 changed, the percentage is known to be good, quartz, ROM
EB> are working: after reset we have a normal working position, but until
EB> the moment the mash code is launched randomize usr [addr] or any command
EB> to run the mash code [print usr, run usr ...] puts it in a stupor

EB> what kind of bug? Other basic commands and programs work great,
EB> no matter how much they “weigh”, but not the machine code

Ehto elementary: ne vyrabatyvaetsja signal WAIT. To-est' pri obraschenii
k PZU vsjo okay, a pri obraschenii k OZU dannye, a imenno KOP (kod operacii)
ne schityvaetsja, tak kak imenno cikl chtenija KOP koroche na pol-takta
chem prosto cikl chtenija pamjati i ehtot cikl (chtenija KOP) dolzhen byt'
prodlen signalom WAIT, inache dannye ne budut schitany. What i proishodit...
pri ispolnenii koda iz OZU proishodit sbojj. Pochemu imenno ehtot signal
(WAIT) ne vyrabatyvaetsja -- smotret' po scheme. Naibolee verojatno,
what ehtot uzel sobran s primeneniem RC-cepochki i prosto naprosto
otvalilsya sovetskijjcapacitor.

Vega/ex-Style Group.

FIDO: 2:5030/1512 ZXNET: 500:812/19 E-mail: veg...@mail.ru ICQ: 144932679

Vega/ex-Style Group.

<филфак-СПбГУ>
FIDO: 2:5030/1512 ZXNET: 500:812/19 E-mail: veg...@mail.ru ICQ: 144932679

The Protoss fled. The zerg dug in. It's time for me to call it a day. Ivan.

- Divorce the scheme, big and small... [Sprinter] Sprinter-II [Forth-CPU]

... ivan...@mail.ru * http://winglion.spb.ru * http://www.petersplus.ru

IM> Well, summer is coming, the crayfish will rise on the mountain, and it will whistle!
IM> And then it rains, rains, and on the calendar it’s Thursday!

In general, what has changed since 1998? Many years have passed, the integration of FPGAs and
SoCs has grown, new models have appeared, prices have decreased. There is still no way
to make a “RUSSIAN home computer, a successor to the ZX-a,BK,PK”?

Regards.