Article View: comp.sys.atari.st
Article #28247Re: MIDI-Controllers
From: Henry_Burdett_Messenger
Date: Wed, 16 Sep 1987 02:33
Date: Wed, 16 Sep 1987 02:33
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1618 bytes
There is a longword at hex 4ba (hz_200) which contains a clock value
accurate to 5 ms. This more than adequate for MIDI, since a note-off
message for even a three-finger chord requires 4 ms...
32000 bps = approx 3200 bytes/sec
One note-off message is 3 bytes, and therefore requires 1 ms to
be sent down the wire.
v--- 5 ms ----v
[1][2][3][4]
1 = note off msg #1, 2 = note off msg #2, 3 = note off msg #3
4 = all notes off
Since this is supposed to be happening "simultaneously", a one
ms clock isn't required.
My MIDI sequencer works perfectly well with a 5 ms clock...
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A member of the David Van Tieghem underground fan club :-)
Henry B. Messenger, a DECperson, but in no way representing Digital.
USENET: henry_burdett_messenger@cup.portal.com CIS: 72477,3356
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!cmcl2!rutgers!labrea!decwrl!sun!imagen!atari!portal!cup.portal.com!Henry_Burdett_Messenger From: Henry_Burdett_Messenger@cup.portal.com Newsgroups: comp.sys.atari.st Subject: Re: MIDI-Controllers Message-ID: <712@cup.portal.com> Date: Tue, 15-Sep-87 22:33:34 EDT Article-I.D.: cup.712 Posted: Tue Sep 15 22:33:34 1987 Date-Received: Fri, 18-Sep-87 06:26:11 EDT References: <2259056@um.cc.umich.edu> Organization: The Portal System (TM) Lines: 42 XPortal-User-Id: 1.1001.1746