OBJECT: TTT4D four in a row tictactoe (3D).
        Sys-RPL y Machine Language.
        Works on S, SX, G, GX.

AUTHOR: Daniel Lopez Sancho

DISCLAIMERS

The library is provided 'as it' and is subject to change without notice. 
No warranty of any kind is made with regard to the software or documentation. 
The author shall not be liable for any incidental error or consequential 
damages in connection with the software and/or the documentation.
Permission to freely distribute this software is granted provided this manual
is distributed with it without any modification.
TTT4D can't be used for any commercial purpose without written
permission from the author. This implies the user should not be charged
for the use of TTT4D in any way.

Please excuse all the linguistic errors in this text. English is not
my native language (Spanish).



INSTALLING THE LIBRARY

1. Upload to your 48 the file TTT4D.lib with Kermit, Usend, XYModem or
   any other transfer protocol. Remember to use binary transfer.

2. Recall the contents of TTT4D.lib to the stack ( 'TTT4D.LIB' [RCL] ).

3. Purge TTT4D.lib to save memory.

4. Press 0 (or any other port number you can access) and [STO].

5. Turn off and on your machine (or restart it by pressing [ON]+[C]).

Now your LIBRARY menu will contain the next label: [TTT4D]



HOW TO PLAY:

There are three possibilities:

1. Against the machine in normal mode

2. Against the machine in master mode

3. Two players 


KEYS:

- [H] on-line help
- [T] changes skill level (only against the machine)
- Cursor keys, [NXT] and [SQRT(X)] to move
- [ENTER] to set position
- [ON] to exit
- [<-] to turn off


FINAL REMARKS:

- HP48 always plays with black

- The library has been developed on a HP48SX with the RPL48 v1.12b
  DEVELOPMENT PACKAGE, the DEBUGGER 1.0b and ED.
  It is completely written in Sys-RPL and ML.
  It makes use of many "unsupported" entries. Use it at your own
  risk. It has been working for months on a HP48SX revision J and on 
  a HP48G revision R and nothing wrong has happened. However, remember 
  to backup your memory before using it.

- Library is ID 335. Its size is 8964.5 bytes and its checksum is #9D81h.


ACKNOWLEDGEMENTS

I would like to thank the following persons:

- Detlef Mueller and Raymond Hellstern for RPL48
- Mika Heiskanen for DEBUGGER and ED
- A Bernardo Gomez-Mayan, David Hernandez, Marc Verdaguer y
  Fco. Javier Vivero for beta testing and support
- HP for HP48 and TOOLS


As I explained in the DISCLAIMERS part, this software is freeware,
but many hours (and days...) of programming and debugging have been
invested in developing this library. So, the author will be much more
than satisfied if someone tells him that he appreciates the library
and he uses it a lot. Author will also be glad to solve (or at least,
try to...) all the problems that you can find using TTT4D.
For this reason, you can contact me by:

POST: Daniel Lopez Sancho
	c/ Gran Via Carlos III, 67 4º2ª
	08028 BARCELONA
	SPAIN

PHONE:  SPAIN - 93 - 330 78 42

FAX:    SPAIN - 93 - 377 15 14

E-mail: corma@sefes.es
	
I will try to answer all doubts I receive.