Crazy_hands - Connection diagram for the internal Hayеs modem.

CONNECTION DIAGRAM    
INTERNAL HAYES MODEM    
(given with changes)   
                                          
(C) G. Shepelev                 
------------------------------------------
 For the laziest, I offer a diagram
connecting the internal hayes modem from
iBM.  Why lazy? To purchase or
creating another modem model requires a lot of work
strain, which, you see, is not for everyone
rushing, so don't run around looking for it
miracle, but it’s better to help out some unfortunate
pisishnik and buy (dismantle at work-
those, having previously deleted the inventory no.
measures :) ) standard debugged modem and
stick according to the diagram to your Spectrum-
mu. There are already terminals for such a gadget -
bass, and it’s better to run online with hayes
iron.                                  
                                          




                                          
     Address bus layout from A0-A15.    
                                          
   In the original circuit, instead of the signal A6
was supplied A1  and instead of _OIRQ_ - _IORQ_,a
decryption of the modem was carried out at the address
itself: #38FD-#ЗFFD,which led to blocking
Memory storage over 48 kilobytes.           
                                          
   In this scheme, decryption of the modem is real-
called to addresses #38BF-#ЗFBF.            
                                          
   For many modems, 5V power is sufficient,
but some may require tension
tion of other denominations:                     
                                          
                - 5V - B5                 
                -12V - B7                 
                + 5V - B3,B29             
                +12V - B9                 
                                          
                                          
   And you can find out which of them are necessary -
but you can determine it by looking at the modem connector. 
                                          

 ALTERNATIVE MODEM DESIGNS.    
                                          
(C) 1998 MAX                    
------------------------------------------
 How you want to have a complete picture
about the product! Advertising is advertising, but not yet
you can feel it with your hands (this warm shit?),
unless you pick out the inside, you remain in
complete ignorance about its effectiveness
the feasibility and feasibility of purchasing and
use.  Wow! But differently
there's no way to tell. Wanting to connect with
the surrounding world received a new head
pain - what kind of modem is used for this?
what?  Based on past and current publications
years ago I found out that two modems are connected to each other
compete for the right to be called the most
fast and reliable means of communication. This
Russian XTR and Ukrainian ZSC modems. Well
ok - I WANT! Naive desire!!! Russia-
the guy didn’t look further than Donetsk - it was too bad
butpleasure is expensive. And darling -
Khokhlyatsky decided to have one. I'm calling the number
phone number specified in the advertising article, in
Zaporozhye. There they sluggishly answer that the platform
Ma Spectrum in their city is bent, that
they all became pussy suckers and were
kami, and as for my wishes there is no
business and interest. At my insistence -
sincere wish to send at least a diagram and
the MMD driver is even more reluctant to respond
Is it possible that if they don’t forget, then something will happen?
are trying to find - do you see they have abandoned everything?
they sold out and there is nothing more...
I don’t want to curse (and the children say, chi-
"Vorona" is melting), but there are no censor words -
zhu.  According to their early assurances, published
famous in the media, they spent more than a year developing
his brainchild, and now it turns out that’s all
forgot and don’t know anything??? Goats!        
                                          
   Guys, if anyone has such a scheme and
driver for MMD terminal - please do not
be lazy and send it to me. Reward
I don’t guarantee, but I will definitely mention it in the magazine.
specifically.  But the main thing is that there will be an opportunity
soberly assess the advantages and disadvantages
device and give an unbiased assessment of it
opportunities. WAITING.                        
                                          
P.S. The same song applies to the XTR modem. This is
please send me a diagram of this device for
autopsy. The driver for the terminal is already (weak)
to God) is available.  See the article for the address.
"From the author." I would be very grateful if
the diagrams will be in electronic form: standard
detailed screen file(s). 5.25" disc