Hardware - EGA monitor and Quorum, or how it's done.

Plutonium #17
                  
                                                                
        +------------------------------------------+          
        + EGA monitor and Quorum, or how it's done.+          
        +------------------------------------------+          
                                                                
    How almost everyone knows exists three in principle
different schemes of these same Quorums: BK-04, Quorum 64 and the most
poor option Quorum 128 (128+ is the same).                    
     Also it is known that an EGA TV requires RGB signals,
signal brightness and vertical with horizontal synchronization,and in TTL levels, that's where find them on the board, now and
let's find out...                                                       
     For computers based on BK-04: RGB and brightness are taken from the second
pins D53, D60, D59 and D54 respectively, on the board they
are located next to the TV modulator (such a little iron box in
left corner), these are 4 pieces 555UP23 (or 1533UP23) in a row, they go
in this order: D60, D53, D59, D54. Now the sync signals
vertical  on  scheme  designated as VBL, 13 leg D17;
horizontal - HBL, 9 leg D12, but they can also be taken from 2 and
5 legs D58 respectively (LAZ in the bottom row).                   
                                                                
                system                                      
                  connector  printer  joysticks
+--+-+-+-+----+------------+-------+-------+--------------+-+-+
+ +-+-+-+ +------------+  +-------+   +-+-+
+ +------+  +
+ + TV +  +
+ + mode-+ +
+ + лят- +                                                     +
+ + ор   +                                                     +
+ +      +                                                     +
+ +------+   ##### D60                                         +
+            ##### D53                                         +
+            #####                                             +
+            ##### D59                                         +
+            ##### D54                                         +
+            #####                                             +
+             ####                                             +
+ #### ####   ####  #### D58                                   +
+             ####  ####                                       +
+--------------------------------------------------------------+
                                                                
     Теперь   о   pacnuhobke   разьема  для  монитора,  он  9-ти
контактный:  1 - GND, 2 - red, 3 - RED, 4 - GREEN, 5 - BLUE, 6 -green/intensity  (brightness),  7  -  blue,  8 - N synh
(horizontal cuhxpa), 9 - V synh (vertical cuhxpa). Well
so here, to the first contact is ground (even a bucket), to 3, 4, 5 - RGB,
to 6 - brightness, and to 8 and 9 - synchro.                              
    I completely forgot, there black color high brightness gray
It looks like it sucks, so maxohbka a diagram to prevent this from happening: 
                                                                
                                                                
                                                                
                                                                
                                                                
 R        +---+                                             
     ---------+ 1 +       +---+   +---+                         
     G        +   о-------+   о---+ 1 +                         
     ---------+   +       +---+   +   о---+                     
     В        +---+     +---------+   +   + +---+               
     -------------------+ +---+   +-+ 1 +  BRIGHT`      
     BRIGHT (яркость)             +---+     +   о---------      
     -----------------------------+   о-----+   +               
                                  +---+     +---+               
                                                                
    Смысл  такой,  когда черный цвет (R, G и В в 0) яркость в 0,
a на монитор нужно подавать BRIGHT` вместо BRIGHT.              
    У меня на БК-04 это все собрано, и прекрасно работает.

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