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- Newsgroups: comp.dcom.modems
- Path: FreeNet.Carleton.CA!an171
- From: an171@FreeNet.Carleton.CA (Anthony Hill)
- Subject: Re: Better UARTs?
- Message-ID: <DMwD08.34u@freenet.carleton.ca>
- Sender: an171@freenet2.carleton.ca (Anthony Hill)
- Reply-To: an171@FreeNet.Carleton.CA (Anthony Hill)
- Organization: The National Capital FreeNet
- References: <4g0hq5$166u@usenetw1.news.prodigy.com>
- Date: Sat, 17 Feb 1996 01:48:08 GMT
-
-
- bill davidsen (davidsen@tmr.com) writes:
- > I heard about the 16650 UART some time ago, which has 32 byte FIFOs
- > rather than 16. While it sounded interesting, it also didn't seem
- > like something I "just had to have." However, now I've seen some
- > specs on the 16750 UART. Got to try one of these.
- >
- > It seems that in addition to a 64 byte FIFO (no surprise) it will do
- > the hardware handshake for you! Now the slowest system around will
- > not lose data because the UART will drop RTS when the FIFO is almost
- > full, and will stop sending if the CTS drops. This is where the
- > logic should have been all along, and all I want to know is where to
- > find one.
- >
- > Any experience with these? The larger buffer is nice, but the flow
- > control changes the whole dynamics of how UARTs are handled.
-
- Unless I'm mistaken the 16650 also is supposed to do hardware flow
- control for you (although I've heard rumors that there were a few problems
- with this part of it), although it doesn't do Xon/Xoff flow control which
- the 16750 is supposed to be able to do as well as RTS/CTS. Of course,
- there's still one slight problem. Someone's got to right the software to
- properly support these UARTs before they'll be really useful. I've heard
- of a few people writing software for teh 16650 (eg. I think SIO for OS/2
- supports them), but I haven't heard of anything for the 16750 yet.
-
- Anthony
-
- --
- Anthony Hill | an171@FreeNet.Carleton.CA
-