	  "-128/Z"
	-------------------------------------

     Z80-CARD  "",   
    "",  ""
 .        ,
     ( 6$ USA)    -
   "MSX-SOUND CHIP":  AY-3-8912 (  AX). 
  8910,    (   2  
  ,   ).  ,  "CHIP" 
.   .  ,   ""  
6581 (  3  ).     !

      -     , 
      " ", 
 " ":
8910: 1 -  , 2 - , 3 -  "+5", 4 -  B,
5 -  C, 6 - , 7 - PA7 ( , B-  8912)
8 - PA6, 9 - PA5, 10 - PA4, 11 - PA3, 12 - PA2, 13 PA1, 14 - PA0,
15 - , 16 - /RESET (), 17 - A8, 18 - BDIR, 19 - BC2,
20 - BC1, 21 - D7 ( ), 22 - D6, 23 - D5, 24 - D4,
25 - D3, 26 - D2, 27 - D1, 28 - D0. (  ""... 
 ,      28  14 ,  ).
 : BC2 - "1",   - 1.25 ,    ,
A8 - CS F760 (), BC1 - A0 (  ), BDIR - /RD,
   (  93).
8912: 1 - , 2,5,26,39 - , .... , 40 -  "+5"
( ,    ,  ...,    
 - 8912,    -    ).
 8912 /CS F760 ()    /9.

     :
F760 -   ,
F761 -    

R0 -  , LOW (8 )
R1 -  , HI (4  ,  4   )
R2 -  B, LOW
R3 -  B, HI
R4 -  C, LOW
R5 -  C, HI
R6 - 	 ,  0-4,  = /(16*5 .R6)
R7 - 	 (, ), 	6  7 	8910 -
        "A" 	"B" (0- )
          :
       0   1   2		
	0      0      0		 A  B  C
	1      0      0		 -  B  C
   (0 -  ,	.  , 1	- )
     ,  -
 3,4,5 (3    ,	4  B,	5-C).
R8 - 	  A
R9 -  --"-- B
R10 - --"-- C
   3	  :
   4=1,       
   .
   4=0,    -  0-3 (.),
       	 (0-F)
R11 -  , LOW
R12 - --"--, HI
    .=/(256*16  R12,R11)
R13 -  	 (	0-3)
   		 16  (  )
  0 - HOLD, =1  2-16    
  1 - ALTERNATIVE, =1,  .  -  (/\/\/)
  2 - ATTACK, =1,     -  ( .: /)
  3 - =1,   0	(HOLD),	=0    1- 
R14 -    A (  8910)
R15 - --"-- B

	       
 (        )
    -	2 .
  -  	12       3
 (    53,   -  16 .
    	).   ""  (!)
  - 16  (,   ,  
  ""  ).
    : 	   
  ,     ,   
 (  	R14/15)	  .	  
.	    ""  2 .
(,       ""   -
 4  ,    ,     
  "" 	  "MSX"	  
  ).     
 	 : 192238 -  / 175
       	, SP-COMPUTER CLUB, 	1992

   F760  8912    2  ,  
   "  ZX".   ,   
8912    , .   ,  ""
      .       
,     8912, ,      
.  8912     "",  
    8912   .   , 
     ,   ,  -
  ,     , 
          8912   .
      ,   .   
       -    
 (   ), .   ( 
   .  ). ,  ,   
     .     -
        F760.     
     1992 .     
   "".       8912
    1991 .      
     1554 (   -
"-90").         
- 1991     ,   
  (      -
   ). ,     1991  
 CP/M,    0-     FDC 93  
F700-F703,       F704 ( 
     ).  CP/M  ""  
  CP/M "" 1990 ,   
 .  CP/M   TPA  48,     
  CP/M .   ,  , -
      8   
    ,    
     .      -
 .    ,     -
 58053    ,    4. -
        
""   20H, . F700, F720, F740... .    
1991      CP/M,   
     F700/F720.  53   F740, a
 . AY8912   F760.    -
  Z80    "".  , 
-      " ".   1991
   3    ..  ,  
     "",    F700
       (  
 F8,F9,FA,   ).     
F710-F714.         1991 ,  
    CP/M   .     CP/M  -
 F700/F720        (   
    )     
     ,     ,   CP/M
        93 (  
  BIOS)        
         ,   
  "".    ,    "" -
   ,     , .  -
       .   -
   ,        -
 , .    (.),     "",  -
,       .  
         ,    
  "" ,     , 
""     "". , 
     "  ",  
   ,      ,   
    ,   "" F710.  ,  
,  .         
,    ,        
   CP/M-   -   . -
, ,         -
      .    1991    
       ...       ,  
    " "  1991 .   , -
   "",  - ""  ...
.      "  " 
     ,   
  , .     .  ,  ,   "-
"     , .   ,
  .    .     
 "",   F700    ,
   - "  "  
 "-"  .     ,  
     500,     
"-"   - ...   ,  
 "".    CP/M     -
,   "-"   ,    -
  "-"   o F700/20   .
   ""  F700/20,  ""   -
.     ,    ,  
"-"     .   
1992 . .  BIOS,    2.61,   
,  . 2.0      
( "-" ,      CP/M, 
      CP/M,    2, 90/92).
CP/M "-"   "",   F700/20 -
   .   1991 . .    
     ,   "", 
       "". ,  .
     , ,  .-
,           -
  "-",        -
   F700/20,    F700/04.  
.   ,      "
" (   ). , ,    
     " ".  , - 91/92
    "   ",     , 
    .  ,  .  
 F710      1991,   ""  -
  CP/M,  5   "-",   
   ,  "-".    .
   .  ,   , 
CP/M     (. 48),     , 
ORDOS -    ,  CP/M -  "". .
 CP/M   ORDOS    1991 .   
  "BRU".     ,  ORDOS -    
   CP/M,  ORDOS.     
"-",      CP/M-60K.   -
    .  ,    "--"
  2  CP/M:  (48)   (60). 
CP/M-48K   ORDOS,  ,   
    CP/M        
   CP/M . 60/120     -
. CP/M-60    ,      -
 ,    CP/M-48K,    --
. "", .  ,    
   "  ", CP/M-60K    
   .     "  "
    "" .  CP/M,  
. ,      CP/M (BIOS 90), -
   ,      1991.   
     (. )   
     .    
   CP/M-48K.     READER.COM,
        
(          -
       4- ).     CP/M-48K
    BASIC,  ,      CP/M,
     MICROSOFT BASIC,    ""
(    BASIC -    BASIC  
IBM PC).           .   
  MICROSOFT BASIC (16K),  " "
   .       " "
      -,   
 BASIC.

	 , 25  1993


 -  ( .: /)
  3