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"" . . . , . . - 32 .
:
- ;
- ;
- ;
- ;
- Z80A, 4 ;
- 27512;
- , , , ;
- +5 > +12 181893 140608.
:
- Z80A - 4 , 1 ;
- - 64 (5655 - 8 .);
- - 64 (27512);
- - 32 ;
- - 384 256 , 4 8 ;
- 2 ;
- - 2 ;
- "";
- +5 / 1,5 .

. , . : ( ), - , ; (, , .).
"". 64 , , "", , "", .
RR, D39 (153335) ( ) - F1. 2 A16 17, 256 . "" 16 15 A14, . RR 4 A17 A16 , A15 14.
RR : 17 16 :
- Dl, D0 (15, 14=00) 0000H...3FFFH;
- D3, D2 (A15, 14=01) 4000H...7FFFH;
- D5, D4 (A15, 14=10) 8000H...BFFFH;
- D7, D6 (15, 14=11) C000H...FFFFH.
, "" 17 16 "1" 15 14. 17, 16=11 , 0000. /RESET (). RR ( ) 14 (00010100).
17, A16=10 , . (14H) : 0000H...3FFFH, C000H...FFFFH - ; 4000H...BFFFH - . "" , RR 15, ( K "") 48 (0000H...BFFFH) 16 (C000H...FFFFH) 000 - "" "".
, A17=1 - , A17=0 - 128 (. ). 128 A17=0 "" . "" - RW, D19, D20 (KP1533TM8). ( ) - F0H. (Q7...Q0, /Q7.../Q0) 17=0 256 128 . , 32 , , .


16 (C000H...FFFFH). "" : C000H...EFFFH - ; F000H...F7FFH - 58055 - .; F800H...FFFFH - 58055 - , , .
2 , 58055, , , , (F000H...F7FFH). , . , /BLOK, 64 .
"" - 9000H...BFFFH. C000H...FFFFH , D000H...FFFFH. .

- , . R, D42 (55535). ( ) - F2. R , , 4 8 .
RC:
- D2, D1, D0 - G, R, 9000...BFFFH;
- D5, D4, D3 - G, R, B D000H..FFFFH;
- D7, D6 - G, - .
a D49, D50, V10...V12. ( ). - , .
, D54 (181893). D53 (153310). . D51 (KP1533TM2) D52 (153310). RF, ( ) - F D48 (15338). RF:
- D0 - . D0="0" - 0 - , D0="1" - 1 - ;
- D1 - . D1="0" - "", D1="1" - "";
- D3 - - . D="0" - , D="1" - ;
- D4 - "", 181893.
- :
- F4H - - , - ;
- F5H - , ;
- F6 - () ;
- F7 - , .

. , D1.1 (1533T2 - ) RC - . 16 M D2 (153310).
:
- F - (4 M) ;
- 10 - (8 M) D44...D46 (153310);
- /RAS - ;
- /AS - .
:
/OEM - ;
/WAIT - "" ;
/L10 - .
G/8 (1 ) D3, D4 (55519), 19968 .
:
R19 - 19968 ;
/L10, /SS - , V9 - - , .
, G2 (125 ) +5 > +12.
V4 - L1. V4 125 . , - V6 C4 +12 . V7 +12 . pe 20...25 , (181893 140608). +12 . 1 (140608), -5 .
RESET (), D5.1 (KP1533TM2). - . "" . 2 "1". "" (RESET) , , "", (). "" , , :
- ;
- , , ;
- D19, D20, D39, D42, D48 "0";
- .
"" , D2...D4, , , , D3, D4 . , . . D42 "" "" . 128 , "" . , "'' .

. D2...D4, , . D2 "" , 2:
- 2G - 16 (=62,5 );
- G 8 (T=125 );
- G/2 - 4 (T=250 );
-G/4 - 2 (T=500 );
- G/8 - 1 (T=l ).
.
D2 /L10 - D44...D46 (153310). /L10 13 D11 - . F "" G/2. D1.3 D9.1. M1. 10 , D14.2. 10 125 - . , (/L10 ) "0" -"" .
/RAS /CAS :
/RAS - D16.1, D16.2, D8.3, D11.2;
/CAS - D16.2, D7.3, D16.3.
/RAS /CAS . /RAS ( "1" "0") "" ( 8 ) . /CAS "" ( 8 ) . 500 , 5655, , .
. G/8="0". G/8="1" - /RAS /CAS . 500 .
. 14: 14="0" - 9000H ...BFFFH, 14="1" - D000H...FFFFH. 14 "0" "1" . G/4, D27/12. .


- . - - 64 . "" :
- 16 - , (4 );
- 48 - .

1 384 - . , . D3, D4 - G0...C13. - - 256 384 "1" - ( ), R19. .
(), - .
:
- - - D14.3;
- - - D11.4;
- - - D14.4, D15.2;
- - - D13.2;
- SS - - D16.4.

.

__

/L10 D44, D45. 9000H...BFFFH , D43 (153327).
D000H...FFFFH D45 D43 D44. 125 ( 10) , D42, D49, D50.
D46 , "1" "0" - . .
, RC D42. (50 - - ). , , "".
"" (/RESET) 0000. , . 000, "" "" "" .
:
- /WAIT - "". G/8="0". , D12 (153310), , X1 - A2 ;
- /WE - , ;
- 16, 17 - , ;
- /17 - , "" ;
- 0...15 - ;
- BD0...BD7 - ;
- - , ;
- /IORD - - ;
- /IOWR - - ;
- /MR - ;
- /MW - ;
- / - "" D28 (15336) - , 17="0" ( );
- /BLOK - , D21 58055 RESBL 2 D18;
- RESBL - "" D21, ( ).
( , , , - , ) ( ) - X1 2. X1. , 2 D2...D4 , "" , 16 . . X1 "" . X1 - .
- : , . V10...V12, .

. . 4 7 1994 . - , . Z80A 4 , . . - 64 . 1994 . , , ( ). . . . , . 2019 . .

 

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