MITS 2SIO serial chip?

I don't know what "WORST" means in this context, but I never had a bit of trouble with the 8250, having used it in a number of mass-produced applications. A lot depends on your expectations and on how well you've read the datasheet. If you built the hardware to work with the device you've designed in, following the spec's, they all worked pretty well. The old UARTs were, far and away, IMHO, the easiest and most forgiving, though. They required the most external logic, though, and once the more intgrated chips, e.g. the 6850 with its integrated handshaking and interrupt logic, and the 8250, with its integrated that logic plus the internal baud rate generator, came down somewhat in price, the more highly integrated parts became more popular. Dick ----- Original Message ----- From: "Gene Buckle" <geneb(a)deltasoft.com> To: <classiccmp(a)classiccmp.org> Sent: Friday, December 14, 2001 12:42 PM Subject: Re: MITS 2SIO serial chip?