Pasi T Mustalahti wrote:

[snip]
> What we know already is that RS232 voltages are enough in most PC's
> but not in the portables.
> With minor modifications to Ludi prommer we could possibly make it
> more reliable but we don't want to modify programs.
[snip]

Hello,

I'm afraid I'm not answering your question but have you seen Jens
Madsen's programmers ?

For instance :
http://www.student.dtu.dk/~c888600/newpic.htm

He has at least 4 versions on his site and they should be better than
the Ludi with low RS232 voltages.

I haven't tried them - I had already made a Ludi before finding out
about them !

Best regards,
Chris
--
Chris MOORE, Symah Vision c/o Matra MS&I,           mailto:cmoore@mgn.fr
6, rue Dewoitine, BP 14, 78142 Velizy-Villacoublay Cedex, France.
Tel: 01 34 63 71 27 Fax: 01 34 63 70 57 Pag: tamtam.tm.fr 06 01 19 74 90