Strange problem with AY, HELP.
ZXNet echo conference «hardware.zx»
Hello, Evgeny Muchkin
Now we still have to find out how these processes differ... :v2_jawdr:
Hello, Evgeny Muchkin
THERE IS! I found out what caused the problems with the sound of AY!
It's all the fault of the processors whose name ends with PEC.
A glitch with AY was noticed on: Z84C0006PEC, Z84C0010PEC (2005 onwards) and Z84C0008PEC
(1991 onwards)
There was no glitch with AY with the following processors: Z0840004PSC (1993 onwards) and Z0840006PSC (1996 onwards,
unfortunately the turbo doesn't pull at all :(()
Tested on yellow and green scorpions.
Colleagues, check this on your machines if possible. I wonder if it's just
Is it such nonsense for Scorpios or is it like this for everyone, but we don’t know... ;)
Does anyone know where I can get Z0840006PSC or a faster one? Preferably in St. Petersburg
(but not necessarily in St. Petersburg ;))
Hello, Evgeny Muchkin
On CMOS processors there are differences in the operation of undocumented commands.
Maybe they will be used in this demo.
Hello, Evgeny Muchkin
Evg> Yes, that would be nice. Maybe then we can get by
Evg> some small modification of the board, instead of percent
Evg> change.
Those Z84Cxxx are CMOS version, others are NMOP respectively. PSC and PEC are
just the crystal packaging code, type and temperature.
Hello Titus
Tit> Now we have to find out how these processes differ...
Yes, that would be nice. Maybe then we can get by with some
a small modification of the board, instead of changing the percentage.
Hello icebear
ice> Those Z84Cxxx are CMOS version, others are NMOP, respectively. PSC and
ice> PEC is simply the die packaging code, type and temperature.
:) I don’t know anything ;)
Well then I'm looking for Z08400...
Hello Costa
Most likely you need to understand the port output commands
Hello, goodboy
And you ask MAX IWAMOTO or RST7
Hello Costa
Cos> On CMOS processors there are differences in the operation of undocumented commands.
Cos> Maybe they will be used in this demo.
I remember that the processor that is in KAY's ball has some kind of feature with
with the OUT command... and I remember when I installed processors from Scorp (6-8 MHz) into KAI
anyway, it didn’t work, as did the demo itself (but this is more likely due to
256th memory).
Hello, Evgeny Muchkin
Evg> Yes, that would be nice. Maybe then we can get by
Evg> some small modification of the board, instead of percent
Evg> change.
Just use Pentagon 128 (or unreal emul) and you'll have no problem.
Hello, Evgeny Muchkin
In the fourth ZX-Format there was information about this (in the Hardware-Zilog section)
Hello, max_iwamoto
max> Just use Pentagon 128 (or unreal emul) and you'll have no problem.
And what of this? The best remedy for headaches is the guillotine?
Hello, DimkaM
Dim> In the fourth ZX-Format there was information about this (in the section
Dim> Iron-Zilog)
I read it. Unfortunately, there are no specifics there :(
Hello, Evgeny Muchkin
And yet, a question to MAX IWAMOTO, what did you write there with RST7, what is
happens to your demo on different processors???
Hello, Evgeny Muchkin
Evg> Who knows where I can get Z0840006PSC or a faster one? Desirable
Evg> in St. Petersburg
In the company "Gamma" www.icgamma.ru, they are of. Zilog dealers, at least at 20 MHz, if available
in the warehouse, they will sell it individually, and if not, then order only from packaging.
For example (Z84C0020PEG - 2 weeks)
Hello deathsoft
DIMA 1, it seems Max Iwamoto himself doesn’t know what they wrote there ;)
deathsoft, this is a kmos version, I have a bunch of them :) in icgamma and
I just bought them :)
Hello, Evgeny Muchkin
Evg> this is a kmos variant
Well, they haven’t done it for the other 100 years, all that remains is to either solder it from somewhere or
look for those lying around in warehouses from those times.
Hello deathsoft
dea> Well, they haven’t done anything else for 100 years, all that remains is to either unsolder it from somewhere
dea> or look for those lying around in warehouses from those times.
I understand. This is where the main difficulty of their extraction lies. ;)
Hello, max_iwamoto
max> Just use Pentagon 128
Oh yeah , we got^ed
=)
Hello, Evgeny Muchkin
Evg> I understand. This is where the main difficulty of their extraction lies. ;)
(so proud)
And I have it! And not alone! :v2_finge; :v2_finge:;
You can try to look at Promelektronika - I bought 3 pieces there for 56
rubles....exactly 084 and more or less modern
2 of them do not live in my newly made scorpion - they do not start.
one works great.
Hello, DIMA 1
DIM> And yet, a question to MAX IWAMOTO, what did you write there with RST7?
DIM> this happens to your demo on different processors ???
Nothing special happens. Parts are downloaded from disk, run,
are played, downloaded again, etc. Previously, everyone played without problems,
I don't know why it's not working now. In my Pentagon on which it was written
the whole thing was a Yamaha AY.
Hello, Mikka_A
Mik> first music then loading or first loading then music?
At the same time.
Hello, Mikka_A
Mik> first music then loading or first loading then music?
Mik> what is the sequence of procedures?
16kb of clean data is loaded for AY, and they are played until the buffer runs out.
data for effects is also loaded, then again 16kb of music (at the same time
naturally the ending is played from the buffer), then these 16k are copied to the buffer and
etc. If the buffer runs out and the data has not yet been loaded, it will start playing
garbage - squeaks, squeaks, noises, etc.
Hello, max_iwamoto
max> Just remembered... Because. swapping occurred while working with the disk
max> it seems to me that the music was expanded in some places (or maybe
max> everywhere) and was stupidly thrust into the registers of the muses. processor. This concerns
max> only in the first part, in the second everything is more normal. If I don't
max> changes memory, then in one interruption it was possible to pump up 2-3
max> sectors from disk.
first music then loading or first loading then music?
what is the sequence of procedures?
PS. Glad to see you! Don't get lost.....
Here's to you for this...
File: e96_112.jpg http://zx.pk.ru/attachment.php?attachmentid=4732