From: ron@ronnatalie.com (Ronald Natalie)
Subject: [TUHS] What's with the DZ-11?
Date: Thu, 27 Nov 2014 10:47:08 -0500 [thread overview]
Message-ID: <060C4334-5EFD-4C7D-9C5B-ECE4B4C7854E@ronnatalie.com> (raw)
In-Reply-To: <20141127145509.5C8F418C0C7@mercury.lcs.mit.edu>
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The original Trailblazers were special modems that on a good like could approach 19.2KB. T They also had special software that recognized when UUCP protocol stuff was being transfer and apportion the bandwidth and spoof the ACKS on the protocol to increase the UUCP throughput.
Believe me, running a bunch of 9600 data transfers on a DZ will pretty much saturate the unibus in a hurry. The thing didn’t even have the ability to operate at 19.2.
The statement is correct. The DZ doesn’t support or even make programatically the CTS/RTS lines and as you did indicate, the RI/CD didn’t generate interrupts and had to be polled.
next prev parent reply other threads:[~2014-11-27 15:47 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-27 14:55 Noel Chiappa
2014-11-27 15:47 ` Ronald Natalie [this message]
2014-11-27 15:50 ` Ronald Natalie
2014-11-27 19:57 ` Dave Horsfall
2014-11-28 13:04 ` Ronald Natalie
-- strict thread matches above, loose matches on Subject: below --
2014-12-01 12:32 Noel Chiappa
2014-12-01 15:46 ` Warner Losh
2014-12-01 16:41 ` Clem Cole
2014-11-27 16:03 Noel Chiappa
2014-11-26 21:41 Noel Chiappa
2014-11-26 20:48 Dave Horsfall
2014-11-26 21:39 ` Ronald Natalie
2014-11-26 22:08 ` Clem Cole
2014-11-27 19:45 ` Dave Horsfall
2014-11-27 20:55 ` Larry McVoy
2014-11-30 6:03 ` Warren Toomey
2014-11-30 6:43 ` Dave Horsfall
2014-11-30 7:03 ` Warren Toomey
2014-12-01 5:03 ` Dave Horsfall
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