(c)  騭, ᪢

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             ᯮ짮 筮 ଠ樨
                䠩  ०
              

(".  " 11/2002)
 ᫥ ।஢: 9.11.2002.




     ६ ࠭ ଠ樨  ZX Spectrum
ࠤ樮 ᯮ ᪥.   祭- 
⥫: 猪   ࠧ 室 ⠫ 
樥,   饭  䠩  ᮮ饭 
᪮ 訡,   䠩  㤠.   
䠩  ० 뫠  祭 ...





     ।쭮 .     n m- ᥫ.
ந ⥫쭮 ᫮, ।⠢饥 ᮡ १
ࠧ來 ᪮ 樨 "᪫饥 "  室묨
᫠: ᫨ 饥 ᫮   - ࠧ拉 ⭮, 
ᮮ⢥騩 ࠧ १ ࠢ ; ᫨ ⭮ -
.
     ਢ ਬ   n=4, m=10:

                        0110010110
                        0100111010
                        1000100111
                        0110100101
                        
                        1100101110

     ⥫쭮 ᫮  㤥 筮 ଠ樥.
, ᫨   室 ᥫ  祭, 
 㤥 ⠭  ⠢訬 ᫠  ⥫쭮
.  ⮣ 筮 믮     
"᪫饥 ", १ ன   ࠢ
祭 .
      ᬮ७ ਬ 祭, ᪠, 
᫮.    ⠭:

                        0110010110 <- 1 ᫮
                        0100111010 <- 2 ᫮
                        0110100101 <- 4 ᫮
                        1100101110 <- ⥫쭮 ᫮
                        
                        1000100111 <- ⠭ 3 ᫮

     ᠬ 㡥,  ᯮᮡ ࠡ⠥   
㣮 ᫠ - ࢮ, ண  ⮣.


ਬ   䠩


     ࠭  ᪥ ࠧ  訥  -
ᥪ.  TR-DOS ࠧ ᥪ - 256 ⮢.  
 ᥪ ᪮ ஫   뢠 
  ஫ 㬬,   ⥭ -  ஫
㬬 ⠭   ࠢ  ࠭ ᠭ. 
ᮢ  뢮,  ᥪ ⠭  訡.
 ᫥ ᪮쪨 ⮪ ⠪ ᥪ   㤠
ࠢ쭮 ,   ᥣ. 뢠 ,   㤠
  ᥪ - ⮣ ࠭  ⮬ ᥪ
ଠ ⠪ 뢠 㯭.
       ०񭭮 䠩 筮  뢠  -
 " ⠥" ⮫쪮   ᪮쪮 ᥪ஢,  㣨
 ०묨.
     䠩  n ᥪ஢.  ᥪ  
256- ᫮. 믮  ᥬ n ᫠ ࠧ來
  "᪫饥 ", 稢  १
⠪ 256-⭮ ᫮,  襬   䠩.   ᫮,
,  뢠 , ⠭   祭
ᥫ, ᫨  ⠢訥.
     ,   䠩  ᥪ 筮
ଠ樨,  ᬮ ⠭  ० ᥪ
⮣ 䠩, ᫨ ଠ  ⠢ ᥪ 楫.
    ᫨   䠩  ᥪ,    ( 
஬) ᮤন  ଠ   ᥪ஢, 
㣮 (  ஬) -  ,   㤥
⠭ 㦥  ० ᥪ 䠩, ᫨  
 ,  㣮 -  (⨬,  ⮬ ᫮
㤮⢮   ᬥ ᥪ).
     . 1 ਢ ਬ  ,   室
䠩 - 7 ᥪ஢.  8 ᥪ ᮤন 筠 ଠ
 ᥪ஢ 2, 4  6,   9 ᥪ - 筠 ଠ 
ᥪ஢ 1, 3, 5  7.

       Ŀ
                                                   
    ͻ
      1    2    3    4    5    6    7  89
    ͼ
                                              
             

                             . 1

    ᫨  ⮬ 䠩  ०, ਬ, 2  3
ᥪ,  2 ᥪ  ᬮ ⠭  ᮤন 4, 6
 8 ᥪ஢,  3 ᥪ -  ᮤন 1, 5, 7  9 ᥪ஢.
    ᫨  ० 7  8 ᥪ,   ⠭
⮫쪮 7 ᥪ -   ᤥ  ᮤন 1, 3, 5  9
ᥪ஢. ⨬,  ᫨  ᥪ  ⥫쭮
ଠ樥 ᯮ  㣮 浪, ⠭ 7
ᥪ 뫮  .
    筮,   䠩 ( ᮮ⢥饬 浪) 
ᥪ, ᮤঠ騥  ଠ  ᥪ஢, 
     ⪠,  ⪮ 1   ⪮ 2
(. 2),  ࠭஢  ⠭ 
 ᬥ ᥪ஢ 䠩,  ⠪ .

    Ŀ
                                                       
               Ŀ     
                                                    
 ͻ
   1    2    3    4    5    6    7  8910
 ͼ
                                            
          

                             . 2

     ࠧ 䠩  ⪨ (ਬ,  16 ᥪ஢) 
  ଠ   ⪠ ⤥쭮.
  㤥 ⠭ 䠩,  ᫨ ० 
  ⪥.


뢮


    , ⮡ ᯥ ࠭ 䠩,  室
ᯮ짮 १ࢭ ஢  娢஢.  
 ᯮ짮 筮 ଠ樨?
     ࠭   䠩 ⮫쪮 
ଠ   䠩.  ⮬ ॡ ⥫쭮
 ᪮ ࠭⢠,  : -,
᪥  ᯫ,  -,  ⥯ ⠭
⮬,  ᫨  ᪥    
த,  ⨤ - ...
    ⮪ ⮣ ᯮᮡ  ⮬,   ࠢ 
࠭祭 ᫮ ० ᥪ஢ 䠩. 祬,  㦥
㯮 ,  䠩 筮 뢠 ०  
 ᪮쪮 ᥪ஢.
    ᫨ 񦭮 ⮣ ᯮᮡ    筮,
  ।⠥ ᯮ짮 १ࢭ ஢ 
娢஢,  㬠   :  ० 䠩
 㤮⢨ 㧭,   ⮦ " ⠥", 
ࠢ ?   ᯮ짮 筮 ଠ樨 
  䠩  娢 ⮦  .
    ᮡ  ⭮  娢. ᫨  筮 䠩 㤥
० ᥪ,  㤥 祭 ⮫쪮 ଠ  ⮣
ᥪ,  ᫨   ந  娢,  ᪮॥ ᥣ
㤥 祭   娢஢ 䠩,  
諮 ०.   ⮬,  筮  
ᯠ ᯮ ᮤন 㦥 ᯠ 
䠩.
     ᮦ,  ᮧ 娢  筮
ଠ樥    ०  ॠ   
   娢஢  ZX Spectrum.    PC ⠪
  - ਬ,  娢 RAR ( "Add
recovery record").


 ணࠬ


    ,     ZX Spectrum   ணࠬ  
䠩  ०   筮 ଠ樨? ...
,  ࠩ ,   ,     蠫 
 ⢮.  , ᫨   ᢮ 䠩,
ਤ  ⠪ ணࠬ  ᠬ⥫쭮.  
 祭 ᫮, ⥬     楤 
   ⮩ .
     ⥩襬 砥 ⠪ ணࠬ  㬥 ᮧ
 㪠 짮⥫ 䠩 (ਬ, ⬥祭 
⠫) 䠩  筮 ଠ樥 (,
ᯮ  㣮 ᪥).  ᮧ 䠩 
ᤥ ⠪ ,   室 䠩,  ७ - "rec"
( "recovery record"). ⭠  - ⠭
㪠 짮⥫ 䠩   䠩  筮
ଠ樥 (, ᯮ  㣮 ᪥). ᫨
 ⠭ 䠩 ,   ࠩ 
⠭ ,  . 室 ।ᬮ 
⠭ 䠩   室, ⠪   㣮 
( 砩, ᫨ 室   䨧᪨ ०).
    ⥫쭮, ⮡ ணࠬ । 롮  ᪮쪨
ਠ⮢ ନ஢ 筮 ଠ樨 ( ᥪ 
 䠩,  ᪮쪮 ᥪ஢,   ᥪ  
16 ᥪ஢ 䠩,  - )  ਢ ᢥ 
⮬,  ०   砥  㤥 ࠢ.
     ஡  娢,  ஬ 뫠
   ᮧ 娢  ०.  ⮬
砥 㤮 ࠭  ଠ   娢.
     ᯮ짮  䠩  ०  
- 㣮 ணࠬ. ਬ,  ⥪⮢ ।
   ⥪   ⮬᪨ 뢠 
rec-䠩  筮 ଠ樥, ᫨ 짮⥫ ࠭
ᮮ⢥ .
     稬,   筮 ଠ樨  
 ०  ⮫쪮 䠩  ᪥,   뫠 
஬  裡 ଠ, ᫨  ࠧ 
   ⮢   ०  ﭠ.
(ਬ, 뫪 ࠧ⮣  ᥪ樨 䠩  FIDO 
ZXNet.)   룮 । ᪮쪮 訩 
ଠ樨,   ⥫  㤥 "訢" 
 訡. ⢥⢥,    ਬ -
㭨樮 ணࠬ.


 楤


1. 祭 256 ⮢ 筮 ଠ樨  㯯
   256- ⪮, ᯮ     㣨.

室: B  - ⢮ ⪮  㯯,
      HL -  砫 ࢮ ⪠ (  
           256),
      DE - ,  ஬ 㤥 ࠧ饭 筠
           ଠ (   256).

MK_256REC  PUSH HL
           PUSH BC
           XOR  A

MK_256_1   XOR  (HL)
           INC  H
           DJNZ MK_256_1

           LD   (DE),A
           POP  BC
           POP  HL
           INC  L
           INC  E
           JR   NZ,MK_256REC

           RET

2. 祭 512 ⮢ 筮 ଠ樨  㯯
   256- ⪮, ᯮ     㣨.
    256 ⮢ 筮 ଠ樨 ᮮ⢥
   ⪠ 1,3,5...;  256 ⮢ - ⪠ 2,4,6...

室: B  - ⢮ ⪮  㯯 (  ),
      HL -  砫 ࢮ ⪠ (  
           256),
      DE - ,  ஬ 㤥 ࠧ饭 筠
           ଠ (   256).

MK_512REC  PUSH BC
           INC  B
           CALL MK_512_1
           INC  D
           INC  H
           POP  BC

MK_512_1   SRL  B
MK_512_2   PUSH HL
           PUSH BC
           XOR  A

MK_512_3   XOR  (HL)
           INC  H
           INC  H
           DJNZ MK_512_3

           LD   (DE),A
           POP  BC
           POP  HL
           INC  L
           INC  E
           JR   NZ,MK_512_2

           RET

3. ⠭  256-⭮ ⪠  㯯 ⠪
   ⪮, ᯮ     㣨,  256
   ⠬ 筮 ଠ樨.

室: B  - ⢮ ⪮  㯯,
      C  -  ⠭ ⪠, 㬥襭  1
           (..  ࢮ ⪠ - 0),
      HL -  砫 ࢮ ⪠ (  
           256),
      DE - ,  ஬ 室 筠 ଠ
           (   256).

US_256REC  LD   A,H
           ADD  A,C
           LD   XH,A

;XH - 訩   ⠭ ⪠.

US_256_1   PUSH BC
           PUSH HL

           LD   A,L
           LD   XL,A
           LD   A,(DE)

US_256_2   LD   C,A
           LD   A,H
           CP   XH
           LD   A,C
           JR   Z,US_256_3
           XOR  (HL)
US_256_3   INC  H
           DJNZ US_256_2

           LD   (IX),A

           POP  HL
           POP  BC
           INC  L
           INC  E
           JR   NZ,US_256_1

           RET

4. ⠭  256-⭮ ⪠  㯯 ⠪
   ⪮, ᯮ     㣨,  512
   ⠬ 筮 ଠ樨.  256 ⮢ 筮
   ଠ樨  ᮮ⢥⢮ ⪠ 1,3,5...; 
   256 ⮢ - ⪠ 2,4,6...

室: B  - ⢮ ⪮  㯯,
      C  -  ⠭ ⪠, 㬥襭  1
           (..  ࢮ ⪠ - 0),
      HL -  砫 ࢮ ⪠ (  
           256),
      DE - ,  ஬ 室 筠 ଠ
           (   256).

    ᫨  ⠭  ⪠  㯯 (⮣ 
 ⪮   ,  㣮 - ),  ।
 맮 楤  室 ࠬ  
⠭ , ⠪  楤  ࠭
ࢮ砫 祭 ᮮ⢥ ॣ஢.

US_512REC  LD   A,H
           ADD  A,C
           LD   XH,A

;XH - 訩   ⠭ ⪠.

           INC  B
           BIT  0,C
           JR   Z,US_512_1
           INC  H
           INC  D
           DEC  B
US_512_1   SRL  B

US_512_2   PUSH BC
           PUSH HL

           LD   A,L
           LD   XL,A
           LD   A,(DE)

US_512_3   LD   C,A
           LD   A,H
           CP   XH
           LD   A,C
           JR   Z,US_512_4
           XOR  (HL)
US_512_4   INC  H
           INC  H
           DJNZ US_512_3

           LD   (IX),A

           POP  HL
           POP  BC
           INC  L
           INC  E
           JR   NZ,US_512_2

           RET

5. ନ஢   筮 ଠ樨  䠩.
    256 ⮢ 筮 ଠ樨   16
      ᥪ஢ 䠩.  楤 ᯮ
   ᠭ  楤 MK_256REC.

室: B  -  䠩  ᥪ,
      DE - ४-ᥪ  砫 䠩.

BUF_16_SEC EQU  #8000  ;  㧪 16 ᥪ஢ 䠩.
BUF_RESULT EQU  #9000  ;  筮 ଠ樨.

;  ⮣,  㣮  - #1000 ⮢;  ஢
;  㣨,  易⥫쭮 묨 256.

MAKE_INFO  LD   HL,BUF_RESULT
           LD   (ADR_256),HL

MAKE_I_1   LD   C,16
           LD   A,B
           SUB  C
           JR   NC,MAKE_I_2
           LD   C,B
MAKE_I_2   PUSH BC

           PUSH DE
           LD   B,C

;  ॣ B - ⢮ ⠥ ᥪ஢ (16 
;),  DE - ४-ᥪ , 㤠 .

           PUSH BC
           LD   HL,BUF_16_SEC
           PUSH HL
           LD   C,5   ; 㭪樨 "⥭ ᥪ஢".
           CALL #3D13
           POP  HL
           POP  BC

; HL=BUF_16_SEC. ନ㥬  ⠭ ⪠ 䠩
;256 ⮢ 筮 ଠ樨:

           LD   DE,0
ADR_256    EQU  $-2
           CALL MK_256REC
           INC  D
           LD   (ADR_256),DE

;稢 ४-ᥪ :

           POP  DE
           INC  D

;塞,   㤥 ࠡ⠭  䠩:

           POP  BC
           LD   A,B
           SUB  C
           LD   B,A
           JR   NZ,MAKE_I_1

           RET





1. ..楢. "䬥⨪ ஢ 設". ᪢, -
   "㪠", 1969.



    㣨    TR-DOS:

1. "   #1F  TR-DOS 5.03". "ZX-" 1-2/1997.

2. " ᮪饭 ६ ଠ஢". "ZX-" 1-2/1997.

3. "TR-DOS:    訡?". "ZX-" 5-6/1997.

4. "  ᪮   뢠". Adventurer #9,
   "ୠ ஭" #3, "⥫.  " 6/2000
   ( ).

5. "뢮 ᨬ ७ 䠩  樮
   ⥬ TR-DOS". "⥫.  " 7/2000.

6. "ᮢ襭⢮  । ᬥ ᪠".
   "⥫.  " 9/2000.

7. "७ 䠩 TR-DOS". "⥫.  "
   12/2000, ".  " 9/2001 ( ᥢ
   BV_Creator).

8. "㡠 䠩 '墮'". ".  " 4/2002.

9. "஢ઠ ४⭮ 䠩  ᪮ TR-DOS".
   ".  " 6/2004.
