In the old days the buffer was much larger -- and I think the Dec Talk Express was using xon-xoff or maybe its using them now and was using rts/cts before. Increasing the buffer size to 12k will at least make the problem go away for most cases. Now there is another problem and that is if there is a lot of characters with no space or word delimiter then you can get into trouble because this will introduce a buffer overflow. I have not tested this for a while, so maybe this one was fixed. on Saturday 07/26/2008 Tony Baechler(tony at baechler.net) wrote > Kerry Hoath wrote: > > Handshaking with the dectalk express has allways been a problem; in fact > > asap would lock up nicely if you used the type command to read a long text > > file. > > > > > > Hi, > > Your explanation was very interesting and was exactly what I was trying > to figure out. Yes, the kernel has a scrollback buffer, which is what I > wanted to know in the first place. However, you seem to be overlooking > something or I'm not understanding. I'm not feeling well so it could be > my fault. That is that in very old versions of Speakup from cvs, I > could easily cat those same README files to the exact same synthesizer > and speech would go on forever. I once let it read every single boot > message from the kernel starting to the login prompt with no problem. > It's only now in newer git versions that the 4 KB bug shows up, so I > still consider it a bug that hasn't been fixed. I admit that I know > little of handshaking and serial communication, but before there was no > problem and now there is. This can be easily demonstrated with the grml > 1.1rc1 live CD, which still had unlimited text output with speech not > stopping. Apparently the final 1.1 release upgraded the Speakup version > so probably has the bug. I don't know exactly when the bug happened but > it goes back to my kernel build from the April git clone and probably > before that. I don't remember if the Shane Etch CD has this or not, I > would have to check. > _______________________________________________ > Speakup mailing list > Speakup at braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup -- Your life is like a penny. You're going to lose it. The question is: How do you spend it? John Covici covici at ccs.covici.com
