Crazy hands - SIMM 4MB on ZX

                                         
                                         
Simm 4Mb on the Sintez 2 computer
                                         
(C) Pantera                              
                                         
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  Hello everyone, here again I decided to show
everyone my new lotion. Yes, it's nothing
other than the connection diagram for simm on 4Mb
to the Sintez computer. Well, I don’t know, maybe
will be useful to someone. I can’t even imagine
installwhoever needs it in IS-DOS
throne disk size of 15000 blocks ;-).
                                         
 The diagram is provided for the Sintez computer.
This is the one that used to be 48k. But now
my monster eats 1 meter simms. But
now he can grab 4 mega without strain
ha. Therefore, all signals are given
for the Sintez scheme. I think it's not necessary
a lot of intelligence to remake it to suit any
another computer For example, a meter diagram for
I remade Leningrad for Sintez and that’s it
O.K O.V                                  
                                         
 Whose computer has already been completed to one meter
on port #DFFD mask #07, then you will need-
There are only 1 KP12, 1 TM8, 1 LE1. This modification uses 3rd and 4th
#DFFD bits. But since  in Pro the 4th bit
SR/M is used,that means the owners
You don't need to read any more of these computers.
                                         
 To take advantage of the top
memory, it is necessary to work ONLY by port
that #DFFD.                                
                                         
 In #7FFD mode you can workONLYwith
one megabyte. Megabyte is sold according to
latch bit, i.e. bit 5 #7FFD. This meg
used in Tyr Dosa 5.1ЗFm (m - this means
Ram disk is one mega (3568 sectors).
In DOS 5.13 this is drive D:.                 
                                         
 And the virtual disk works ok
faster than the flop. All programs using the
rotation to the flop through #3D13 - they fly.
                                         
                                         
                                         
 Memory management is carried out as follows:  
                                         
#DFFD mask #1F                                         
#7FFD mask #Е7                           
                                         
                                         
Схема  поделена на две части, т.к. она не
вместилась в один экран, а жаль ;-).     
                                         
                                         






















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/RES * - вместо этого сигнала можно взять
         bit2#EFF7, for software block
         upper memory assignments.         
#DFFD - decryption signal for this port,
         taken from LL1:8 (see diagram).
                                         
KP11:1 - signal from the 1st leg of the multiplexer,
         improvements to 128k.              
                                         
A5 V3, - regeneration signals             
A6 V4, video controller                
A7 V5,  Sintez 2 computer             
                                         
                                         
                                         
  PYS(7) memory chips must be removed
pour from the board.                            
                                         
  Mikrik S2 (and el-t LI1) must be installed if-
Are you going to disable the ver-
I fuck my memory. And sometimes it's enough
S1, this is if the program does not understand all the stan-
darts for extended memory.            
                                         
  bit2 of port #EFF7 is a software block
memory upgrade above 128K. If you have
computer this port is missing, instead
signal, feed the common wire.          
                                         
  Processor address and data bus signals
designated as A0-A15 and D0-D7 respectively
sure (be careful!).             
                                         
  You still need to remove the memory lock
above 48K. Removable simply: from TM9:15
bitS #7FFD is cut off, mikruhi on that leg
(LL1) where bitS went to submit the land. So
in a barbaric way, you deprived yourself
48k mode FOREVER :-). If you dissolve
snot to the floor and shout: I want 48k, then
it can be done like this:                   
  
  
   
   
   
   
  
 If you don’t have #EFF7 port, then you need to do this:
                                         
   
    
    
                                         
  Now when bit2 of port #EFF7 is reset to
zero memory above 128 will open and
48th latch - locked. And when installed
its new addition to the unit will deny access to
memory above 128K and the 48th latch is possible
use.                            
                                         
  If your computer has a CMOS clock, as well as
firmwareMG.Gluk Reset Service 5.3k,then
it supports this blocking standard
ki memory. I have exactly this pro-
sewing and CMOS watches, and I'm just in awe of
all this buzz!!!                    
                                         
                                         
                                         
 Regeneration of 4Mb simm    
                                         
                                         
                                         
 For those comrades who already have
refinement of Sintez to 512k, (but only with
regeneration of the additional address RU7,
because. practice shows that it is possible not
regenerate along the first leg
RU7) you can’t read everything further, but you can-
maybe that's all ;-). Cut off the old signals where the new ones go.
For those who still have 128k, do the right
simple simm regeneration in this way:
                                         
from DD23:5 apply to DD26:10              
from DD23:3 apply to DD26:12              
apply to DD23:5 from CP11:12 (updated to 128)
submit land to DD23:3                   
                                         
apply to DD23:11 with KP11:4 (upgrade to 128k)
Apply +5V to DD23:13                    
                                         
apply to DD24:5 with LE1:1 (see diagram)
submit land to DD24:3                   
                                         
apply to DD24:11 with LE1:13 (see diagram)
submit land at DD24:13                  
                                         
* from KP11:9:12 (upgrade to 128k) remove
remove resistance.                    
                                         
                                         
 Video controller regeneration signals,
(A5 V3, A6 V4, A7 V5)  before submitting
to multiplexers expansion cards,
needs to be cut off from multiplexers
computer boards (!!!).                  
                                         
                                         
DO NOT MISTAKE WITH SIG RESOLDERING=
VIDEO CONTROLLER CAL. I HAVE
EVERYTHING STILL WORKS TO THIS DAY
SO FUCK`U ARE NOT ACCEPTED!!
                                         
                                         
                                         
The following modifications still need to be made:  
                                         
       
       
       
       
       
       
       
This modification is needed so that the programs I write
those in the address area #0000-#ЗFFF, do not damage
or 128th memory.Р.S. As you can see, I took the AXLR circuit as a basis
which fell into my hands 3 years (!!!)
ago, but whichwas tested on two
computer:Leningrad-1 and then processed
me under Sintez. Passed a successful test
still works for me.           
                                         
And finally, to all the lucky owners
such memory, I can advise you to sew
yourself dos 5.1ЗFm. Then you will become completely
valuable user of top memory.     
 SPECCY 4 М RULEZ 4EVER !!!