Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!seismo!ut-sally!husc6!rutgers!labrea!decwrl!pyramid!voder!wlbr!pete
From: pete@wlbr.UUCP (Pete Lyall)
Newsgroups: comp.sys.m6809
Subject: Re: RS-232 port: hardware or sotfware?
Message-ID: <1041@wlbr.UUCP>
Date: Mon, 20-Jul-87 12:31:26 EDT
Article-I.D.: wlbr.1041
Posted: Mon Jul 20 12:31:26 1987
Date-Received: Tue, 21-Jul-87 05:54:30 EDT
References:  <500@otto.COM>
Reply-To: pete@wlbr.UUCP (0000-Pete Lyall)
Organization: Eaton IMS, Westlake Village, CA
Lines: 25

In article <500@otto.COM> rex@otto.UUCP (Rex Jolliff) writes:
>
>I was thinking of buying a coco (2 or 3) and I was wondering if the rs-232 port
>is all hardware or if any of it is implemented in software.  Let me clarify
>this.  I own a Commodore-64, and it's rs-232 port is set up as follows: an
>8-bit parellel port is used, and each of the rs-232 pins, including the TxD and
>RxD, are driven by a line coming off the parellel port.  

The original coco, coco2, and the new coco3 come with this sort of
affair as standard. You can buy the RS-232 pak as an add-on (you'll
either need a multi-pak, or a Y-cable) for around $30 if you hunt. The
Rs-232 pak uses a 6551 UART, and is fully implemented in hardware. If
you get the proper software, you can drive it at 19.2Kbps no problem.


-- 
                                                   Pete Lyall

Usenet:     {trwrb, scgvaxd, ihnp4, voder, vortex}!wlbr!pete
Compuserve: 76703,4230 (OS9 Forum Sysop)
OS9 (home): (805)-985-0632 (24hr./1200 baud)
Phone:      (818)-706-5693 (work 9-5 PST)

EATON Corp, IMSD, 31717 La Tienda Dr., Westlake Village, Ca. 91359
----------------------------------------------------------------------