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Problem wit assignment with jump instructions

Problem wit assignment with jump instructions

Problem wit assignment with jump instructions

Hi here is my code I tried so hard and can't figure out the problem that I have. For the carriage I am trying to use cmp but I think that what I am trying to compare is wrong anybody to try to correct my code will be so nice.


TITLE MASM Template                        (main.asm)

Write a program that reads a string of individual characters from the keyboard. The characters are stored in
a byte type (size) buffer 81 decimal bytes in length. The keyboard input can be terminated either when the buffer is full
(i.e., 81 characters have been entered) or when the user enters a carriage return character, whichever occurs first.
Use a loop, indirect addressing, the cmp instruction,and conditional jump instructions in your program.
Display a count of the total number of characters, excluding the carriage return, that were entered.
After displaying the count call the WaitMsg procedure. See page 146 in the text for usuage of WaitMsg
Submit a Source File, .asm extension, a listing file and an .exe file.
* Maintain a count of the number of lower case letters entered and the number of uppercase letters entered
* In addition to displaying a count of the total number of characters, display counts for the number
  of lowercase characters and uppercase characters entered. (Your program should display three counts).
* After displaying each count pause exectution of the program by calling the WaitMsg procedure.
INCLUDE Irvine32.inc

CR = 0Dh    ;Carriage Return


str1 BYTE "Enter a string:",0
str2 BYTE "End of the string:",0
str3 BYTE "No carriage found normal stop",0

carryOrEndArrayOfChar BYTE "End of the string of individual characters.",0
Chararray BYTE CHARACTER_COUNT+1 DUP(' ')   ;81 bytes uninitialized

bufSize DWORD ?


main PROC

mov edx, OFFSET str1 ; display Enter a String
call WriteString

     mov edx, OFFSET Chararray


     call WriteChar
     call readChar
     mov esi, Chararray
     mov al, [esi]
     inc esi
     ;mov ebx, 0dh

     cmp al, 0Dh
     je found
     loop L1
     call Crlf
     ;add ebx, 2
     jmp notFound

;movsx eax,WORD PTR [ebx]
mov edx, OFFSET carryOrEndArrayOfChar
call WriteString
jmp quit

mov edx, OFFSET str3
call WriteString
jmp quit

call Crlf
call WaitMsg

main ENDP

END main
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RE: Problem wit assignment with jump instructions

Haven't read properly, but a few (probably misguided) thoughts:
(1) what is LENGTHOF doing? Charactercount is a value (10 in your case, but presumably due to become 80).
(2) think about which way mov al, [esi] works. Which is source and which is destination?
(3) when you call WriteChar for the first time, what is it going to write?

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