      SDOS:
  SDOS_v8.7

 :  std  MX, RK-86, Galaksija, Orion, TRS-80
   SD: HWM_PVV, msx, n8vem 
   :
- CD  -      ;
- DIR -     ;
- .RKX(RKS  std, RKR  RK-86  GTP  , RKO - , CAS - TRS-80 ) 
   ,      ,   
  ;
- R .,, -  
   ,        
   (: R TEST.BIN,0ACD,5FE0 -   TEST.BIN  
     00ACD    00ACD+05FE0=06AAD).  -
           , 
        ,  
  ;
- W .,, -   
    ,         
  (: W TEST.BIN,0ACD,5FE0 -    TEST.BIN   
    00ACD    00ACD+05FE0=06AAD).  - 
          ,  
       ,   .
        ,  
      ,       
  ;
- X -   ,     SDOS;
- I -    ;

 Galaksija:
- WB . -  BASIC     SD   GTP;

 :
- L . -     RKX  SD  RAM  ;
- S RAM.,SD. -    
  RAM    SD   RKX;

 Orion:
- L . -     RKO  SD  RAM ; 
- S RAM,SD., -     RAM  
  SD   RKO.

      DIR  ,    
  (      R  W),   
   DIR    .

          
  .





 24.05.2017:            -  (2)
- L . -     RKX  SD  RAM   
(: L TEST.BIN -   TEST.BIN    
  00000     ,   RAM   TEST.BIN 
       4     ,
 ,       ( 5  06).
: L TEST.BIN -   TEST.BIN      
00000     ,   RAM   TEST_MX.HEX,
       4     , 
     TEST_MX.HEX). 

- S RAM.,SD., SD  ,
         RAM    
 -     RAM    SD   RKX (: S TEST.BIN - 
  TEST.BIN  RAM       00000     
,     SD         
TEST.BIN,   ,  RKX!
: S TEST.BIN,TEST_MX.HEX -   TEST_MX.HEX      00000   
  ,     SD       TEST.BIN). 


14.02.2018   SDOS_v8
  SDHC ,         
   FAT16  .
  I -    .

21.02.2018   SDOS_V8.1
   : 
WB . -  BASIC     SD   GTP.

01.03.2018   SDOS_V8.3
- L . -     RKO  SD  RAM  Orion 
(: L TEST$.RKO -   TEST$.RKO    
  00000     ,   RAM   TEST$ 
 ,        RKO   .

- S RAM,SD., -     RAM   
 SD   RKO (: S TEST$,TEST1$.BIN -  TEST$  RAM     
   00000     ,     SD   
      TEST1$.BIN,   ,  RKO!). 

05.03.2018   SDOS_V8.4
  TRS-80

01.06.2018   SDOS_V8.6
    CRC   ,    512 

10.07.2018   SDOS_V8.7
  SD_WW55_n8vem


{
   RKX:
1) 2  - ;
2) 2  -  ( = - );
3) , 1+8+1+3=13  -  ,      RAMFOS,   
  ' ',        0 - , FF - ;
4) , 1+8+1+3=13  - ,    ,
    '.',     3),  3)   ;
5) , 1+8+1+3=13     (  4) ),     4);
6) 06 -  ' '  RKX;
7)  ;
}

{
  RKO:
8  
64  ,  0E6h ()
2   ( 0000)
2   (  )
16  ORDOS-
(--10h) 
3  ,  0E6h ()
2    
}

{
  ORD:
0-7 -  .     8 .     , 
     .
8-9 -            -  "".
- -  .     (16 )  .
 -  .  "ORDOS" V2.X    D7.  "1"   ,
      .     .  
    D7      .
D-F -   .
}

{
CAS File Format for SYSTEM programs
-----------------------------------
binary file contains blocks of data

1st block: header:  256 times '00' and 'A5' synchron byte
2nd block: name:  55, and 6 character name from ASC 'A'-'Z'
data block:   3C NN LL HH DD DD DD ... DD CC
      where:
        3C: signature byte
        NN: length of the data block (0 means 256 bytes)
        HHLL: address of memory
        DD DD .. DD: data bytes
        CC: checksum
last block:   78 LL HH
      where HHLL is the start address of the program
}

