I worked on a project to try to develop a TTY modem for the Braille Lite, Dean was extremely tight about giving me any info about how the lite was done. I believe they used a Hitachi HD64180 microprocessor which was a Z80 offshoot. Pretty sure they had no more than about 2 megs of ram and probably 64K of eprom Don't know about the clockspeed but bet it was pretty kreeky. I don't believe it was ever field upgradable, Dean said something to me about using Ymodem to upload programs and having nothing but trouble with it. Considering the instability of the hardware I think it'd be a bucket of squashed worms. Tom fowle On Tue, May 24, 2016 at 08:48:08PM -0500, Glenn wrote: > Hi, > I am wondering if anyone is working on a light-weight version of Linux to work on some of the legacy technology. > I am thinking of devices such as a Braille Light 40 and the like. > I don't know how much RAM these devices typically used, or if they can be upgraded, the last time I had one open for some battery work, it seemed that all the components are soldered down. > I imagine that it would take a .BIN file to prompt it to load Linux. > My thoughts are that it could give a bit more usefulness to these old devices. > I think otherwise, it's just a clunky Braille display. > Thanks for thoughts. > Glenn > _______________________________________________ > Speakup mailing list > Speakup@xxxxxxxxxxxxxxxxx > http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup _______________________________________________ Speakup mailing list Speakup@xxxxxxxxxxxxxxxxx http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
