Path: utzoo!mnetor!uunet!husc6!cmcl2!nrl-cmf!ames!pasteur!ucbvax!CORY.BERKELEY.EDU!dillon
From: dillon@CORY.BERKELEY.EDU (Matt Dillon)
Newsgroups: comp.sys.amiga
Subject: Re: Amiga as workstation (serial ports, really)
Message-ID: <8805091751.AA08743@cory.Berkeley.EDU>
Date: 9 May 88 17:51:27 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Lines: 18

:I suspect that the main reason that "idiot manufacturers" still run their
:serial ports at 19.2Kbaud is because most commercially available (= CHEAP)
:UARTs are only capable of 19.2Kbaud. For example, the 6551, which is cheap,
:has low chip count (add a crystal, bus buffers, and ready to go), and is
:easily interfaced with 68xx/65xx/68K-based machines. I suspect there's an
:aweful lot of 6502's out there (e.g. I recently discovered that the TVI 910
:was 6502-based, when I patched a bug in their firmware for a local
:university). 

	Actually, you can run most UARTS at >19.2KBaud.  I currently have
a small home-built computer consisting of a 6502 running at @2Mhz+, several
other IO chips but most noteably two 6551A's running at 76.8KBaud.  It is
just a matter of giving the thing a faster crystal.  I would be surprised 
if you could run x1 UARTS (that require a clock in for synching but do not
require a 16x clock for sampling) at 1MBit easy.  Note: read, non-custom
and low cost parts here.

			-Matt