I have this small program that runs with the flat assembler. My problem is that at the receive line function it receives the line and if there isn't a $ typed at the end of the user input the program displays a lot of strange stuff, sometimes beeps and then it seems to terminate without causing any damage to m computer. My question is how do I receive a string of characters with assembly maybe with that function without requiring that the user type $ at the end of his/her input.
Hi there,
I found the following script on the net, i like to use it as a standard template for new scripts.
But i do not understand the meaning of the last line, can anybody explain what going on on the last line
vflag=off
filename=
while getopts vf: opt
do
case "$opt" in
v)... (9 Replies)
Hi, i've got the following:
a=`echo $b | grep '^.*/'`
i'm storing in the variable the value of the variable b only if it has a / somewhere.
It works, but i don't want to print the value. How do i give the value of b to the grep command without the echo?
thanks! (5 Replies)
Hello..
I am doing some awk-ing and among all I use substr inside it..
I have: ....substr($0,60,37)
meaning as U all know take from 37 char. from point 60..
can I put it like this substr($0,60,end of line)
meaning take it from point 60 and take all characketrs in that line until line... (2 Replies)
First af all hi.
i want to create a batch script which inform when users log in last time on system or if they are online when they logged in.
I want ot use a file .users which has the usernames of users.
i want to print for example
peter is ONLINE: Logged in on Wed Feb 11 07:47
alex... (2 Replies)
I am looking for some model like this:
My Computer
-------------
Intermediate Server (IS)
-------------
Own Server
I must be able to ssh into the Intermediate Internet Server which is generally an online version of SSH service through which I will connect to Own Server. I was the IS to... (2 Replies)
Can any body tell me when I put close(2), why the code does not show any out put?
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
int main(){
int fd1,fd2,fd3,fd4;
close(2);
fd1=open("test1.txt",O_WRONLY |O_CREAT | O_TRUNC,0744);
fprintf(stderr,"fd1 = %d\n",fd1);
... (5 Replies)
Hello experts,
I am using fork() in my code but I am confused which output comes first child or parent?
I did the following code .My book shows parent first but my linux shows child first.Can anyone tell me why?
#include <stdio.h>
int main(){
int pid;
printf("I am original process with pid... (5 Replies)
Im trying to make a vga program for linux Im wondering if anyone knows of a simple document on the subject or if someone could show me some basics. What system calls should I use what parameters should I give them. How do I draw a line of pixels green after in vga mode. I prefer nasm but I can use... (2 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
I am having a hard time with this assignement i cant get the pfib value to print out the fib sequence.
... (1 Reply)
Discussion started by: kenjiro310
1 Replies
LEARN ABOUT DEBIAN
z88dk-copt
copt(1) z88 Development Kit copt(1)NAME
copt - peephole optimizer
SYSNOPIS
copt file ...
DESCRIPTION
copt is a general-purpose peephole optimizer. It reads code from its standard input and writes an improved version to its standard output.
copy reads the named files for its optimizations, which are encoded as follows:
<pattern for input line 1>
<pattern for input line 2>
...
<pattern for input line n>
=
<pattern for output line 1>
<pattern for output line 2>
...
<pattern for output line m>
<blank line>
Pattern matching uses literal string comparison, with one exception: ``%%'' matches the ``%'' character, and ``%'' followed by a digit
matches everything up to the next occurrence of the next pattern character, though all occurrences of %n must denote the same string. For
example, the pattern ``%1=%1.'' matches exactly those strings that begin with a string X, followed by a ``='' (the first), followed by a
second occurrence of X, followed by a period. In this way, the input/output pattern
mov $%1,r%2
mov *r%2,r%2
=
mov %1,r%2
commands copt to replace runs like
mov $_a,r3
mov *r3,r3
with
mov _a,r3
Note that a tab or newline can terminate a %n variable.
copt compares each run of input patterns with the current input instruction and its predecessors. If no match is found, it advances to the
next input instruction and tries again. Otherwise, it replaces the input instructions with the corresponding output patterns, pattern vari-
ables instantiated,and resumes its search with the first instruction of the replacement. copt matches input patterns in reverse order to
cascade optimizations without backing up.
BUGS
Errors in optimization files are always possible.
SEE ALSO z88dk(1), z88dk-zcc(1), z88dk-z80asm(1), z88dk-appmake(1), z88dk-copt(1).
AUTHOR
z88dk was written by Dominic Morris <dom@z88dk.org>, and others.
01 December 2009 copt(1)