Instructions for use of the ISA bus true random number generator rw1 
====================================================================

1. Plug the generator rw1 in an ISA slot. Maybe you should fix it with the screws. 

2. Make sure the base address of the card is the same at the jumpers and in the device driver,
   if you changed the jumpers.

3. The module rw1.o (from rw1.c) can be used (under Linux) with the script rp1m with the parameters 
     "start", "stop" or "restart". 
    The module creates the device /dev/rw1 where the true random numbers can be read from. 
         If the autodetection failed, the error message can be found in /var/log/messages.
         This source of random numbers can be used with dd and other commands; e. g. "dd if=/dev/rw1 of=tmp.out
         bs=4 count=10000".
         Note: the modul does ony a weak after-treatment so these random number won´t pass all statistical tests.
    
4. The user-space-program (for Linux) has usually this usage: 
    rw1 <c1>  <output-file-name> <output-file-size [Bytes]>
    and can be used with an additional parameter (see source code), but without the optional parameter the program
    does an strong after-treatment so the random numbers in the output-file will pass all tests of randomness.
    

Jumper addresses
----------------
J0 (high jumper)  J1 (low jumper)  Address	comment
0  (left)	  0 (left)	   0x120 = 288
1  (right)	  0 (left)	   0x160 = 352
0  (left)	  1 (right)	   0x1A0 = 416	default
1  (right)	  1 (right)	   0x1E0 = 480



	Dipl. Phys. Rolf Freitag, rolf.freitag at email.de