YO G!! dodododitdaadahhhh... It's da players...

    -=[ 40 Watt FM Broadcast Band Intermediate Power Amplifier Control ]=-    


Makefile Notes
~~~~~~~~~~~~~~

To compile, edit the Makefile to suit your needs. 
Then type 'make' and, if successful, 'make install'.


Program Notes
~~~~~~~~~~~~~

* Needs to be run as root, or suid root 'chmod 4100'.

* define PASSWD to whatever you want for a password.

* define IPASTATUS to the status file that will hold the current 
  IPA status.

* logins/bad logins and a change of status are logged using syslog.

* define BASE_ADDRESS to the address of your parallel port. Use 'dmesg'
  to find out if you don't know, or try:

  0x3BC, 0x378, or 0x278

* Don't disconnect the cable while it's operating (duh).


Command Line Arguments
~~~~~~~~~~~~~~~~~~~~~~

(no password is required)

-B	Set IPA to HIGH         (maximum output power)
-b	Set IPA to MIDHIGH
-m	Set IPA to MID          (medium output power)
-l	Set IPA to MIDLOW
-L	Set IPA to LOW          (lowest output power)

Comment out -DVERBOSE to stop the messages that are printed. Useful when using
ipa_control in scripts.


Hardware
~~~~~~~~

See ipa-reg.png or ipa-reg.ps


Telnet Support
~~~~~~~~~~~~~~

To add telnet support;

Append:

	ipa_control stream tcp nowait root /path/to/tcpd /path/to/ipa_control

to your /etc/inetd.conf and 'killall -HUP inetd'.

Then append: 

	ipa_control 8001/tcp ipa_control 

where 8001 is the desired port number to your /etc/services.

'nc localhost 8001' to try it out.


WWW Interface
~~~~~~~~~~~~~

amp.cgi               Connects up to a host (running ipa_control_server.pl)
                      and sends whatever command that was chosen.

amp.main.cgi          Prints out the HTML for the amplifier control page, 
                      and runs amp.cgi.

ipa_control_server.pl Does the actual controlling. There is no authentication.
                      Use access lists or firewall rules if you're scared of 
                      the script kidz.


Bugs/Contact
~~~~~~~~~~~~

www.dct.com/~multiplx