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Path: utzoo!attcan!uunet!lll-winken!lll-tis!ames!mailrus!tut.cis.ohio-state.edu!rutgers!mit-eddie!husc6!bbn!bbn.com!slackey
From: slackey@bbn.com (Stan Lackey)
Newsgroups: comp.sys.atari.8bit,misc.wanted
Subject: Re: Need a cassette tape drive.
Keywords: XR2211 FSK
Message-ID: <31750@bbn.COM>
Date: 2 Nov 88 15:02:56 GMT
References: <736@wsccs.UUCP> <4408@bsu-cs.UUCP> <4216@c3pe.UUCP>
Sender: news@bbn.COM
Reply-To: slackey@BBN.COM (Stan Lackey)
Organization: Bolt Beranek and Newman Inc., Cambridge MA
Lines: 11

>In article <4408@bsu-cs.UUCP> cfchiesa@bsu-cs.UUCP (Christopher Chiesa) writes:
>One of these days, I'll do some serious experimenting with some custom tape
>I/O software and the XR2206 (phase-coherent) FSK modulator. If a Bell 103

In my pre-atari, pre-sinclair days, I was fooling around with a
home-built 6800-based system.  I built a simple mod-demod with a 555
(voltage controlled osc) and 556(?) phase locked loop.  I connected a
UART to the 6800, and connected the serial I/O from the UART into my
widget.  I used freq's like 3000Hz for a 1 and 3300 for a 0 or so.  It
worked totally reliably at 1200 baud!  I guess I should have tried it
at higher baud rates...  I had fun anyway.
-Stan