, , :
;
().
. . , . . .4.1, .4.2.
. 4.1.
. 4.2.
:
AZ, az
09
: _? $ @ & [ ],. \ / % # ' " + * ^ () < >! { }
, ( , , , ) . , , .
, , ( . .3.2). . , : _,.,?, $, @. . , . 255 , 32, . (, ).
. .
. ;. , , . ( ), . , :
;
ADD AX,BX;
(. .3.3) , , .
, , . , . , .
|
|
|
, , . .4.1.
4.1.
, , ( - ).
, .
. . . , CLC CF, CLD DF:
CLC;CF=0
CLD;DF=0
( ). , , ( ) , () . , . .
, , ( ). :
D (decimal) ( );
B (binary) ;
O (octal) Q ;
H (hexadecimal) .
, , , , , , , A5H, 0A5H.
( ) , : '' "", '+b' "+". , : '" "' . , , ASCII (ASCII (. American Standard Code for Information Interchange) ), () . ASCII .4.2.
4.2. ASCII
| 2B | + | |
| A | ||
| B | ||
| C | ||
| D | ||
| E | ||
| F | ||
| G | ||
| H | ||
| I | ||
| 4A | J | |
| 4B | K | |
| 4C | L | |
| 4D | M | |
| 4E | N | |
| 4F | O | |
| P | ||
| Q | ||
| R | ||
| S | ||
| T | ||
| U | ||
| V | ||
| W | ||
| Z | ||
| Y | ||
| 5A | Z | |
| a | ||
| b |
. 4.2
|
|
|
| c | ||
| d | ||
| e | ||
| f | ||
| g | ||
| h | ||
| i | ||
| 6A | j | |
| 6B | k | |
| 6C | l | |
| 6D | m | |
| 6E | n | |
| 6F | o | |
| p | ||
| q | ||
| r | ||
| s | ||
| t | ||
| u | ||
| v | ||
| w | ||
| z | ||
| y | ||
| 7A | z |
( ASCII ). ('+' '+b' ). . . :
MOV AX,'H'
MOV DL,0H
ADD CX,-15D
( ). ( . ).
. , $. , ( ) ( IP). . , . :
JMP $+3; MOV
LD; LD 1
MOV AL,12
JMP , LD . ( ) , JMP, , . , ( ) (. .3.3).
. , . ( ) , .
, :
