Actually, models made after I believe Sept. 1995 had a flashrom board for upgrading the firmware by yourself, which I did quite a few times. Units made sometime since the Summer of 1996 had superflash, which also held firmware and were user upgradable. These were both optional upgrades for the bns640, but were standard on the bns2000. I'm not sure how that corresponds to the braille lite models. The basic interpreter manual for the units said the speech chip is a si263, but that's all I know on that. Supposedly this is the same speech chip as used in the accent synthesizer. Greg On Tue, May 24, 2016 at 10:04:43PM -0700, Tom Fowle wrote: > And, since the software was all in eprom there wouldn't be means for > upgrading without burning new eproms. > > I wonder what speech synthesizer they used suppose must have been based on > the long dead TI SPo256. > Tom Fowl> -- web site: http://www.gregn.net gpg public key: http://www.gregn.net/pubkey.asc skype: gregn1 (authorization required, add me to your contacts list first) If we haven't been in touch before, e-mail me before adding me to your contacts. -- Free domains: http://www.eu.org/ or mail dns-manager@xxxxxx _______________________________________________ Speakup mailing list Speakup@xxxxxxxxxxxxxxxxx http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup