newbie...please help.....

[Seemanta Dutta <seemanta@recjai.ac.in>]

greetings to all linux gurus.....

i am an ELKS newbie though i have been using linux for quite some time now..
i have the recent images of ELKS and i can boot from an ELKS floppy..but the
problem that i am facing is this:

				i want to access the PC parllel port from 
ELKS..
i can do that from normal linux...the necessary function calls ie. ioperm() 
and
outb() are defined in /asm/io.h and unistd.h respectively....

my program is just a simple one to control the lighting of a 8 LEDs
connected to data pins of the parallel interface...as long as i use 'gcc' 
its absolutely
fine....but i am not being able to compile my program using 'bcc'..the 
program i
am using is given below..albeit a very short and simple one...

#include<sys/io.h>
#include<unistd.h>
int main()
{
        ioperm(0x378,3,1);  //to enable access to the parallel port..
        for(;;)
          outb(0x88,0x378);  //writing 0x88 or 10001000b to the data 
pins..thereby lighting the LEDs....
        return 0;
}			

now when i compile it using bcc as :
					 bcc testport.c -o testport
the error reported is this:
				testport.c:1.18: error: cannot find include 
file sys/io.h
OK..i get it then i try out this..using the '-I' option of bcc:
				bcc testport.c -I/usr/include/sys -o 
testport
the output i get is this....
			
			testport.c:1.18: error: cannot find include file 
sys/io.h
/usr/include/sys/unistd.h:1.19 (from /usr/include/sys/unistd.h:1) 
(from /usr/include/sys/unistd.h:1) 
(from /usr/include/sys/unistd.h:1) (from/usr/include/sys/unistd.h:1) 
(from /usr/include/sys/unistd.h:1) 
(from /usr/include/sys/unistd.h:1) (from /usr/include/sys/unistd.h:1) 
(from /usr/include/sys/unistd.h:1) 
(from /usr/include/sys/unistd.h:1)  .....like this for several pages...and 
in the end i get this line..)
(from testport.c:2): error: cannot find include file unistd.h

i am not able to make anything out of this.....is there any other option of 
nasm that i might be missing??any libraries that i might be
mising??
kindly help....i shall ever be grateful

there is another trivial  question that i would like to ask....

whenever i am running the above program after compiling thru gcc...i get 
the LEDs lighted, alright...but the other LEDs that are not supposed
to light up..also light up and then light off..although very fast...for 
example if i write hex F8 on the data port...
what i should get is this: on on on on on off off off  in my LEDs...
but the last three LEDs switch between on and off states very fast..thus 
what i get actually is a series of alternating F8 and FF in my
LEDs...can u suggest any thing???

one last query....whenver i am not running my program even then some random 
bytes are displayed on the data pins of the parallel port....
what process will be doing this? i have my 'lpd' disabled too....
what i want is that when i am writing to my port..no one should....so that 
the output i get from my LEDs is always constant.....
so my question now is: how can i know what process is accessing my port 
even when i am writing to it??
can i disable it from doing it?
kindly help this newbie out of these problems....
i hope i did not waste ur precious time with such trivial and boring 
questions...;-)
regards...
thanks in advance....
seemanta