.


:




:

































 

 

 

 


(expanded) .




 

UMB (Upper Memory Blocks) . , , ROM BIOS ROM.

EMS (panded Memory Specification), Lotus Development, Intel Microsoft ( LIM-). 640 .

() . UMB, RGM BIOS, 64- "", . "(TM). , "" ( 1 ), "" (. . 2).

i8088 "" () . , i80286 .

 

 

(extended)

 

, l80286 24- , 16 , i80386/486 - 4 .

 

 

Expanded-
HMA -
1024 K   10000h
ROM BIOS ROM BIOS
960 K   F000 h
ROM BIOS
896 K   E000 h " EMS "
... ...
Hard Disk ROM BIOS I/O ROM BIOS
  C800 h
784 K EGA/VGA ROM BIOS C000 h
 
768 K CGA
 
736 K B000 h
EGA/VGA
... ... ... A000 h   M.SYS
TSR-
DOS DOS
0 K  
. 1 . 2

 

() , , , . DOS , . , - .

, . . , , . DOS- . - VDISK, DOS, 3.0. VDISK DOS , . OS/2 , . , , OS/2 DOS, 640 .

.

. . - ( ), : SRAM : DRAM (FPM DRAM, EDO DRAM, SDRAM, Rambus DRAM, SDRAM II.) , . .

, SRAM , DRAM , SRAM , , .

SDRAM - . , . Double Data Rate SDRAM, SDRAM II ( ) 200 , SDRAM.

SLDRAM 400 . , , DRAM. , .

1 SLDRAM 400 , 600 . 400 / : , , - , .

 

 

, , , ( ). , , .
, , . , , .

 

:

 

1. .. . 1991

2. .. 1990.

 

3. .. , .. , .. 1991.

 

4. 10 1998

 





:


: 2017-02-28; !; : 512 |


:

:

: , .
==> ...

783 - | 753 -


© 2015-2024 lektsii.org - -

: 0.014 .