Path: utzoo!attcan!uunet!wuarchive!julius.cs.uiuc.edu!apple!olivea!tymix!tardis!jms
From: jms@tardis.Tymnet.COM (Joe Smith)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Serial Port, SYNC mode?
Summary: Paula demands stop bit
Message-ID: <1277@tardis.Tymnet.COM>
Date: 7 Oct 90 06:07:57 GMT
References: <2024@jimi.cs.unlv.edu>
Reply-To: jms@tardis.Tymnet.COM (Joe Smith)
Organization: BT Tymnet, San Jose, CA
Lines: 20

In article <2024@jimi.cs.unlv.edu> maniac@lil-ed.cs.unlv.edu (Eric J. Schwertfeger) writes:
> Can the standard amiga serial port, either through 
>the serial.device, or through direct hardware access, do
>8 bit syncronous transfers, with no start or stop bits?

From the RKM Hardware Manual: "Data will be moved out of the shift register,
one bit during each time interval, starting with the least significant bit.
The shifting continues until all 1 bits have been shifted out.  Any number
of combination of data and stop bits may be specified this way."

But there must be at least one stop bit.  If you load the registers with
all zeros, no data will be sent, no interrupt will be generated.

The Amiga's built-in serial port does not support sync.

-- 
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