LSI ADM3A with an unusual keyboard

[Tony Duell]

> 
> ISTR the ADM5 was their first microprocessor-based product.  The ADM-3a did=
>  have MSI serial components - as I recall, it was two separate chips for tr=
> ansmitter and receiver, but still single components for each rather than SS=

I am suprised it didn't use one of those 40 pin dumb UARTs, like the 1602 
/ AY-3-1015 etc. The only separate Tx/Rx chips I've come across were the 
ones HP used in the 11284 (serial interface for the 9830) and 59403 
(common carrier interface for HPIB) and supproted synchronous operation too.

-tony