Sorry Dear Dan,
Please take no offence,I never said knowledge,but experience in this very particular topic - yes.You do not know how much time I have spent only on this,with very slow progress.They said 93C66 blows frequently I solved and showed hot swap with at24Cxx series.They said editing facility;their keyboard entry was rubbish,had to be highly rhythimic otherwise hanging.I solved this using P3.0 and P3.1.On top of it I had to keep serial port communication with PC for my own trouble shooting but they wont have more than one outlet.I solved using the same pins.My code beeps on starts and waits for serial comm for a little while for possible message editing and then proceeds to scroll the message.
They wanted speed variation.Erik always said newbies like me will get lot of flicker.I did not have any flicker right from the start.So I created flicker and ghosts and established speed limits.
I have been keeping track probably everything available in this particular topic.
At the very last moment they said 250 or 999 characters.I am very hard pressed.I try to prepare my question.I expect concrete answers.I think I can 'joke' a shallow answer.Even then I say sorry i was joking meant no offence.
Regards.
Rudra