Article View: comp.sys.mac
Article #35935Re: DIY MIDI interface?
From: Michael S. Czeiszperger
Date: Tue, 03 Jan 1989 13:48
Date: Tue, 03 Jan 1989 13:48
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1513 bytes
In article <6636@killer.DALLAS.TX.US> sp@killer.DALLAS.TX.US (Steve Parker) writes: >[...] The only trick is you have to pump a 500k/1M/2M (depending on >software) clock signal back into the ext clock line, since there is no way >to divide the internal clock in the SCC to get 31.25k baud. Also, you DO I built mine with a 500kHz clock, but later changed it to 1MHz because of compatibility problems. Yes, you would think Mac MIDI software should be able to handle all three clock speeds, but in practice, the default is *always* 1MHz, and some software doesn't support anything else. If you're building your own, save yourself some hassles and use a 1MHz clock. -- Michael S. Czeiszperger | "milihelen: The amount of beauty required to launch Systems Analyst | a single ship." The Ohio State University | 2015 Neil Ave, Columbus, OH 43210 ARPA:czei@icarus.eng.ohio-state.edu PAN:CZEI (614) 292-0161
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!accelerator.eng.ohio-state.edu!czei From: czei@accelerator.eng.ohio-state.edu (Michael S. Czeiszperger) Newsgroups: comp.sys.mac,rec.music.synth Subject: Re: DIY MIDI interface? Keywords: MIDI Message-ID: <1324@accelerator.eng.ohio-state.edu> Date: 3 Jan 89 13:48:02 GMT References: <817@ttrdf.UUCP> <6636@killer.DALLAS.TX.US> Reply-To: czei@accelerator.eng.ohio-state.edu (Michael S. Czeiszperger) Organization: The Ohio State University Dept of Electrical Engineering Lines: 18