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D6,D7    = B1,B2    -   ( ,  )

     ""     -
"EGA ORIONA-128".       ""
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 256 .         "-128"    192.
       3,5$.   
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1. Z80,   3,5   (: 5   WAIT)  
2. "INT" 50,   D6  FB (.),  -
    "+5" (  ZX-SPECTRUM.    FF)
3. - ,     -86 (    B)
7007,     -12.91 (    /  ROM-BIOS)
4.     D7  FB.    16-
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5. " "   D5  FB.  N   F000,  -
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6. "NMI"   .    NMI  
7. -    FF.   (FE/D4)  
8.. 8912   "" -  .-: BFFD/FFFD
9.    
      (      FULL RAM  MEMORY):
F400 -  
F700/F720 -    (F720/D3,D6 -  )
F760 -  181037  i8237,     -HD/
F780 -   .  (1-16 )
F7B0 -  5121 ()
FB00 -    (8    1 )
      
    "BC":  BFFD -    8912,  FFFD -     8912
  : 1F -   (  )
10.    (        ):
F8 -     - ( D3=1  8  )
F9 -     
FA -     
FB -       

	      FB
	   ----------------------------

   D7     D6     D5     D4     D3     D2     D1     D0
   !      !      !      !      !      !      !      !
   MZ    INT    XMEM   RZRV   BS1    BS0    SS1    SS0
   !      !      !      !      !      !      !      !
   !      !      !      !      !      !      !______!____ SEGMENT SELECT
   !      !      !      !      !______!__________________ BANK SELECT
   !      !      !      !
   !      !      !      !________   BANK SELECT ( = 0)
   !      !      !_______________ FULL RAM MEMORY ( D5=1  0-FFFF - )
   !      !______________________ INT ENABLE ( D5=0 )
   !_____________________________ DISPATCHER OFF ( D7=1  !)

 BS1,BS0       ,     SS1,SS0  
16-             0-3FFF.
,      ,          FB (,SUPER-3)
FC -   .   "-3"  D7 -   
FD - -      ""  .  8910/12
FE -   ""       (    D4)
FF - " "     (   )
!        Z80  -
  1992-1993      .  , 
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