Post - Miscellaneous. Gas stove "GEFEST". Mixer water tap. DA2oo4A: amplifier 1o+1oW

LESZEK CHMIELEWSKI>                     
hello                            
I made a small list of active ones
Spectrum users to send
the latest information about the program
bmp2scr, detected glitches, links to
fresh bugfixes and software during creation
which this program was used   
                                        
macros>                                 
hello                                  
I am the author of the Spectrum magazine msf,
converted graphics for numbers 26 and 27
your program, thanx for it          
                                        
LC>                                     
I downloaded these magazines, I'll look at them later
another computer                       
                                        
macros>                                 
they are completely in Russian..              
                                        
LC>                                     
zdrasWujtje!                            
thisproblem because in Russian I
I read very slowly                    
                                        
macros>                                 
this is understandable, but I'm not good enough
I know English to make versions
completely on it                        
                                        
LC>                                     
I'm not really either..                       
Another bad thing is that there is no TAP file,
so I have to use it again
emulator                              
                                        
macros>                                 
I don't know how to work with files with
such an organization.  of course, it's been a long time since I
I used the commands load"" and
load""code and I know how they work, but
I can’t imagine how to handle something like this
image files from assembler..           
                                        
LC>                                     
if I'm not mistaken, you can upload files
without headers via CALL 1366 with address
loading in Ix, lengthin DE (or BC) and
flag in A (o - for header, 255 - for
data).  I need to start hacking again
toys, otherwise I’ll forget everything         
                                        
macros>                                 
you need to read a book on BASIC, there
it seems there was something about loading from
assembler   another problem... let's say
there are 1o files, how to upload, for example,
only the ninth?                         
                                        
                                        
LC>                                     
simply if you use files without
headings, you need to use different
flag bytes (1-254), procedure from ROM
will not download anything with another
flag.  for standard files you need
load header (flag=o) and if there
there is no necessary data (for example, in the name),
then load the next one with flag=o, block
the data will not load because there
flag=255.  If the title contains the necessary
data, read from there the length, address and
with flag=255 call 1366               
                                        
macros>                                 
butit's very slow.   for example,
upload the ninth file out of ten by 16
kilobytes each.  maybe under an emulator
it will be fast, but in real life
Spectrum? probably necessary in this case
change the log structure, download and
read texts one by one, without choice    
                                        
LC>                                     
of course, it can help here
just a change in structure. how to do
this is selective, for example for
MBo2 users?                     
                                        
macros>                                 
I can only do what I have
yes - TR-DoS                           
                                        
LC>                                     
I see.. maybe someday..         
                                        
macros>                                 
I’m not used to working with TAp, because
that this is not common now.  in
9o's we had a lot of cassette tapes
Spectrums, but people didn't use them
nothingserious type electronic
press.      after playing, some
switched to consoles or PCs, forgetting about
Spectrum.  others bought Spectrums from
disk drives and started programming  
                                        
LC>                                     
it's a pity that people forgot about the spec..       
                                        
macros>                                 
not all                                  
                                        
LC>                                     
but many                               
not used in other parts of the world
TR-DoS, since there are systems
better, for example +D.   MBo2 can
work directly with TAP files without
changes (via CALL 1366), that's why
I mentioned her. And she's very fast -
Sokb/s                                  
                                        
macros>                                 
I'll tell you a little secret - we have many
would like to present our programs
Western stage, but they don'ttap versions,
because they only have tr-dos..
like me, for example                    
                                        
LC>                                     
there are also some programs that do not
take into account uLA features such as
noise on the screen when register I is set
less than #8o (I made a switch,
especially to watch Russian programs
on real Spectrum)                  
tap version is a useful thing, for example in
game abe mission loader made on
BASIC (so you can easily
adapt to other disk drives
systems), so it can be done -
for example, going to BASIC when loading
next part, and then again in
machine code.  of course, do it like this
thus the program is "single file"
impossible, as they like to do in
TR-DoS                                
bmp2scr is known in your country?        
                                        
macros>                                 
yes.  there is also a spec converter for PC,
8col and jpeg color on spec, but quality
it's worse there..                            
                                        
LC>                                     
about the existence of a jpeg viewer on
Spectrum I knew (b/w with dithering)     
                                        
macros>                                 
from aliens factorY?                      
                                        
LC>                                     
yes, it was shown on zlincon o2, it was
very slow..                       
I know about spec converter, it's written in
delphi and slows down.  what's mine
The converter is known to you, it makes me very happy.
I know a lot of people use it
Spain and Portugal, I’m not sure about Russia
I was sure                              
                                        
macros>                                 
we still knew the old one,
full screen version, with black background    
                                        
LC>                                     
well, that version was not very convenient,
one of the first, then bmp2scr appeared
proI looked at your magazines, the pictures in them
look very good                  
                                        
macros>                                 
what about the music?                           
                                        
LC>                                     
both are excellent, I like a little more
liked it in the 26th, - more
"old school" :)                        
how to deal with gas stoves
                and water taps
                                        
solutions known to me                   
                                        
1. GAS STOVE "GEFEST"               
                                        
claims:                              
 flame adjustment knobs tight
     turn or don't turn
                                  quite
gas man's conclusion:                    
 cause of malfunction unknown, stovecan be replaced in the store by
                                guarantees
store conclusion:                    
 missing
                                        
solution:                                
the handles stop rotating because
between their plane and metal
the plate body does not provide any clearance,
during operation on rubbing
surfaces, fat settles and gets into
air as part of water vapor in
cooking process and
prevents rotation.                  
to eliminate this shortcoming
it is necessary to remove the plastic handle and
hole through which the handle fits onto
axle, place a washer or thin nut,
so that between the plane of the handle and the body
a gap of o.5-1mm has formed on the slab.      
                                        
2. WATER MIXER TAP         
                                        
claims:                              
frequent wear of the rubber gasket        
                                        
solution:                                
use of spacers from other
materials does not give the desired result;
There are also other defects in the mixer. 
an excellent solution is a complete replacement
tap to a valve of a different design, in
which instead of a screw and gasket
two overlapping ones are used
other semicircular ceramic or
metal-ceramic washers.              
advantages of the method:                     
- the working parts of the valve are not destroyed  
- do not affect the operation of the mixer
some other defects                
- no effort to close and
opening the tap                        
there is such a thing in video monitors -
line linearity regulator.    in
domestic monitors, as well as
TVs, it beeps with ultrasonic
frequency - 1bkHz. attempts at more reliable
fixing the ferrite rod and two
magnets did not give any results, so
a device was invented to turn off
line linearity regulator             
                                        
it consists of a switch and a throttle. in
one position switch regulator
line linearity is enabled as usual,
this mode is used when it is important
linearity of the image.    Vfriend
switch position regulator
linearity of lines is disabled, and on it
place the throttle is turned on, any, on
ferrite core, as long as it doesn’t squeak
and didn't warm up. in this mode linearity
horizontally lost, but disappears
irritating ultrasound and you can calmly
work                                
                                        
I think the scheme is not needed                
                                        
It should be noted that you cannot include
monitor or TV without regulator
linearity, as it will burn
resistor that is included with it
in parallel                             
 TDA2ooЧA: amplifier 1o+1W
                                        
the chip has a low noise level, and
also short circuit protection
load and overheating                    
                                        
                                        
purpose of the microcircuit pins:          
                                        
11 - boostrap 1                         
1o - output 1                           
 9 - +vs                                
 8 - output 27 - boostrap 2                         
 6 - gnd                                
 5 - input+ 2                           
 4 - input- 2                           
 3 - svrr                               
 2 - input- 1                           
 1 - iput+ 1                            
                                        
metal substrate of the chip
connected to the mass, i.e. pin 6      
                                        
supply voltage of the microcircuit - 8..18V 
                                        
in the application you will find a standard
circuit diagram for connecting this microcircuit, as well as
amplifier circuit for Spectrum on this
microcircuit                              
                                        
I assembled and tested the amplifier,
The sound quality is wonderful            
                                        
as an acoustic system
homemade speakers are used
size 2o*25*1osm, made of
chipboard, with speakers with a diameter of 1Scm,
power 2.Sbt (from a tube radio :)