How to create an assembly program that will allow the user to enter somer characters and group the characters according to the following: alphabets, numbers, and special characters.
ASAP.
thanks.
larvee
0
Newbie Poster
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Jump to PostHow to create an assembly program that will allow the user to enter somer characters and group the characters according to the following: alphabets, numbers, and special characters.
ASAP.thanks.
You want your free advice/pointers - ASAP.
Jump to PostAny particular processor?
Here's some fun code:; CHRGRP.ASM : Compiled with A86 (http://eji.com/a86/) ; Do not use the Ampersand (&) (special char to separate commands in DOS. ; ------------------------------------------------------------------------ …
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gerard4143
371
Nearly a Posting Maven
How to create an assembly program that will allow the user to enter somer characters and group the characters according to the following: alphabets, numbers, and special characters.
ASAP.thanks.
You want your free advice/pointers - ASAP.
larvee
0
Newbie Poster
do you know how?
thines01
401
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Team Colleague
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Any particular processor?
Here's some fun code:
; CHRGRP.ASM : Compiled with A86 (http://eji.com/a86/)
; Do not use the Ampersand (&) (special char to separate commands in DOS.
; ------------------------------------------------------------------------
; This program will take bytes from the COMMAND-LINE & evaluate them for
; their TYPE (Numbers, Characters, Punctuation).
; ----------------------------- ;
; Print the title for Numbers ;
mov ah, 09h ;
mov dx, ttlNumbers ; NUMBERS header
int 21h ; Write String
;
mov si, 0080h ; Address of the COUNT of command-line bytes
mov cx, [si] ; Count of command-line bytes
mov ch, 0h ; ...don't need/want this
mov si, 0082h ; put the address of chars in SI
chkNumLoop:
mov bl, [si] ; move the current byte into BL
call isANum ; check for NUM
cmp bh, 1h ; if not a num...
jne noPrintNum ; ...go to next char
printNum: ; else
push si ;
mov si, printSpot ; put the byte in the STRING printing spot
mov [si], bl ;
mov ah, 09h ; ...
mov dx, printSpot ; ...
int 21h ; Print it
pop si ;
noPrintNum: ;
inc si ;
loop chkNumLoop ; decrements CX when looping
;
; ----------------------------- ;
; Print the title for Chars ;
mov ah, 09h ;
mov dx, ttlChars ; CHARACTERS header
int 21h ; Write String
;
mov si, 0080h ; Address of the COUNT of command-line bytes
mov cx, [si] ; Count of command-line bytes
mov ch, 0h ; ...don't need/want this
mov si, 0082h ; put the address of chars in SI
chkCharLoop: ;
mov bl, [si] ; move the current byte into BL
call isLowerChar ; check for Char
cmp bh, 1h ; if not a char...
je printChar ;
call isUpperChar ;
cmp bh, 1h ;
jne noPrintChar ;
printChar: ; else
push si ;
mov si, printSpot ; put the byte in the STRING printing spot
mov [si], bl ;
mov ah, 09h ; ...
mov dx, printSpot ; ...
int 21h ; Print it
pop si ;
noPrintChar: ;
inc si ;
loop chkCharLoop ; decrements CX when looping
;
; ----------------------------- ;
; Print the title for Punct. ;
mov ah, 09h ;
mov dx, ttlPunctuation ; PUNCTUATION header
int 21h ; Write String
;
mov si, 0080h ; Address of the COUNT of command-line bytes
mov cx, [si] ; Count of command-line bytes
mov ch, 0h ; ...don't need/want this
mov si, 0082h ; put the address of chars in SI
chkPunctLoop: ;
mov bl, [si] ; move the current byte into BL
call isLowerChar ; check for Char
cmp bh, 1h ; if not a char...
je noPrintPunct ;
call isUpperChar ; check for Upper char
cmp bh, 1h ;
je noPrintPunct ;
call isANum ; check for NUM
cmp bh, 1h ; if not a num...
je noPrintPunct ;
printPunct: ; All checks failed, it's PUNCT
push si ;
mov si, printSpot ; put the byte in the STRING printing spot
mov [si], bl ;
mov ah, 09h ; ...
mov dx, printSpot ; ...
int 21h ; Print it
pop si ;
noPrintPunct: ;
inc si ;
loop chkPunctLoop ; decrements CX when looping
;
int 20h ; ********** DROP TO DOS *********
; ----------------------------- ;
isANum: ; Subroutine isANum();
mov bh, 0h ;
cmp bl, 30h ;
jl notANum ; Numbers are between 0x30 and 0x39
cmp bl, 39h ;
jg notANum ;
mov bh, 1h ; TRUE
notANum:; or done ;
ret ;
; ----------------------------- ;
isUpperChar: ; Subroutine isUpperChar();
mov bh, 0h ;
cmp bl, 41h ;
jl notUpperChar ; Upper chars are between 0x41 and 0x5a
cmp bl, 5ah ;
jg notUpperChar ;
mov bh, 1h ; TRUE
notUpperChar:; or done
ret ;
; ----------------------------- ;
isLowerChar: ; Subroutine isLowerChar();
mov bh, 0h ;
cmp bl, 61h ;
jl notLowerChar ; Lower chars are between 0x61 and 0x7a
cmp bl, 7ah ;
jg notLowerChar ;
mov bh, 1h ; TRUE
notLowerChar:; or done ;
ret ;
;
;--------------------[Print Spot]--------------------------------
printSpot: ; Transfer bytes here to print
db 00, '$' ;
;
;--------------------[HEADERS / TITLES]--------------------------
ttlChars: db 0ah, 0dh, '[Characters]', 0ah, 0dh, 024h
ttlPunctuation: db 0ah, 0dh, '[Punctuation]', 0ah, 0dh, 024h
ttlNumbers: db 0ah, 0dh, '[Numbers]', 0ah, 0dh, 024h
; Results
;C:\science\asm>CHRGRP T5h4!i3-s2%I1^sNeat
;
;[Numbers]
;54321
;[Characters]
;ThisIsNeat
;[Punctuation]
;!-%
thines01
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Please change all of the "MOV ??, 0h" to "XOR ??, ??".
thines01
401
Postaholic
Team Colleague
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You can also change the character print sections to call one routine:
;so something like this:
printNum: ; else
push si ;
mov si, printSpot ; put the byte in the STRING printing spot
mov [si], bl ;
mov ah, 09h ; ...
mov dx, printSpot ; ...
int 21h ; Print it
pop si ;
noPrintNum:
; BECOMES:
printNum: ; else
push si ;
call doPrint; ;
pop si ;
noPrintNum:
; AS A FORWARD REFERENCE TO:
doPrint: ; Subroutine doPrint
mov si, printSpot ; put the byte in the STRING printing spot
mov [si], bl ;
mov ah, 09h ; ...
mov dx, printSpot ; ...
int 21h ; Print it
ret ;
thines01
401
Postaholic
Team Colleague
Featured Poster
Sorry for multiple updates, but here is a bug-fix (for when there are no command-line parameters present) and an enhancement on the print routine.
; CHRGRP.ASM : Compiled with A86 (http://eji.com/a86/)
; Do not use the Ampersand (&) (special char to separate commands in DOS.
; ------------------------------------------------------------------------
; This program will take bytes from the command-line and evaluate them for
; their TYPE (Numbers, Characters, Punctuation).
; ----------------------------- ;
mov si, 0080h ; Address of the COUNT of command-line bytes
mov cx, [si] ; Count of command-line bytes
xor ch, ch ; ...don't need/want this
cmp cl, 0h ; If there are no command-line parameters
je doUsage ; ...show usage message and exit.
;
; Print the title for Numbers ;
mov ah, 09h ;
mov dx, ttlNumbers ; NUMBERS header
int 21h ; Write String
;
mov si, 0082h ; else put the address of chars in SI
chkNumLoop:
mov bl, [si] ; move the current byte into BL
call isANum ; check for NUM
cmp bh, 1h ; if not a num...
jne noPrintNum ; ...go to next char
printNum: ; else
push si ;
call doPrint; ;
pop si ;
noPrintNum: ;
inc si ;
loop chkNumLoop ; decrements CX when looping
;
; ----------------------------- ;
; Print the title for Chars ;
mov ah, 09h ;
mov dx, ttlChars ; CHARACTERS header
int 21h ; Write String
;
mov si, 0080h ; Address of the COUNT of command-line bytes
mov cx, [si] ; Count of command-line bytes
xor ch, ch ; ...don't need/want this
mov si, 0082h ; put the address of chars in SI
chkCharLoop: ;
mov bl, [si] ; move the current byte into BL
call isLowerChar ; check for Char
cmp bh, 1h ; if not a char...
je printChar ;
call isUpperChar ;
cmp bh, 1h ;
jne noPrintChar ;
printChar: ; else
push si ;
call doPrint; ;
pop si ;
noPrintChar: ;
inc si ;
loop chkCharLoop ; decrements CX when looping
;
; ----------------------------- ;
; Print the title for Punct. ;
mov ah, 09h ;
mov dx, ttlPunctuation ; PUNCTUATION header
int 21h ; Write String
;
mov si, 0080h ; Address of the COUNT of command-line bytes
mov cx, [si] ; Count of command-line bytes
xor ch, ch ; ...don't need/want this
mov si, 0082h ; put the address of chars in SI
chkPunctLoop: ;
mov bl, [si] ; move the current byte into BL
call isLowerChar ; check for Char
cmp bh, 1h ; if not a char...
je noPrintPunct ;
call isUpperChar ; check for Upper char
cmp bh, 1h ;
je noPrintPunct ;
call isANum ; check for NUM
cmp bh, 1h ; if not a num...
je noPrintPunct ;
printPunct: ; All checks failed, it's PUNCT
push si ;
call doPrint; ;
pop si ;
noPrintPunct: ;
inc si ;
loop chkPunctLoop ; decrements CX when looping
; ***************************
int 20h ; ******* DROP TO DOS *******
; ----------------------------- ; ***************************
doUsage: ;
mov ah, 09h ;
mov dx, ttlUsage ;
int 21h ; Print Usage Message
; ***************************
int 20h ; ******* DROP TO DOS *******
; ----------------------------- ; ***************************
isANum: ; Subroutine isANum();
xor bh, bh ;
cmp bl, 30h ;
jl notANum ; Numbers are between 0x30 and 0x39
cmp bl, 39h ;
jg notANum ;
mov bh, 1h ; TRUE
notANum:; or done ;
ret ;
; ----------------------------- ;
isUpperChar: ; Subroutine isUpperChar();
xor bh, bh ;
cmp bl, 41h ;
jl notUpperChar ; Upper chars are between 0x41 and 0x5a
cmp bl, 5ah ;
jg notUpperChar ;
mov bh, 1h ; TRUE
notUpperChar:; or done ;
ret ;
; ----------------------------- ;
isLowerChar: ; Subroutine isLowerChar();
xor bh, bh ;
cmp bl, 61h ;
jl notLowerChar ; Lower chars are between 0x61 and 0x7a
cmp bl, 7ah ;
jg notLowerChar ;
mov bh, 1h ; TRUE
notLowerChar:; or done ;
ret ;
; ----------------------------- ;
doPrint: ; Subroutine doPrint
mov si, printSpot ; put the byte in the STRING printing spot
mov [si], bl ;
mov ah, 09h ; ...
mov dx, printSpot ; ...
int 21h ; Print it
ret ;
;--------------------[Print Spot]--------------------------------
printSpot: ; Transfer bytes here to print
db 00, '$' ;
;
;--------------------[HEADERS / TITLES]--------------------------
ttlChars: db 0ah, 0dh, '[Characters]', 0ah, 0dh, 024h
ttlPunctuation: db 0ah, 0dh, '[Punctuation]', 0ah, 0dh, 024h
ttlNumbers: db 0ah, 0dh, '[Numbers]', 0ah, 0dh, 024h
ttlUsage: db 0ah, 0dh,
db 'Usage:', 0ah, 0dh, 09h, 'CHRGRP {some data to evaluate}$'
; Results
;C:\science\asm>CHRGRP T5h4!i3-s2%I1^sNeat
;
;[Numbers]
;54321
;[Characters]
;ThisIsNeat
;[Punctuation]
;!-%
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