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Date:      Tue, 20 May 2003 06:08:47 +0000 (CDT)
From:      jimd@siu.edu
To:        tlambert2@mindspring.com
Cc:        freebsd-current@freebsd.org
Subject:   Re: MIDI on SB Live! ? (fwd)
Message-ID:  <200305200608.h4K68lFC008187@freebsd2.localnet10>
In-Reply-To: <3EC8F983.B548792D@mindspring.com>

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The "midi connector" is connected to the Amiga via its serial port. The
Creative "midi cable" is plugged into the Creative soundcard (MIDI/"game"
port) and one of the MIDI OUT ports on the "midi connector", which has been
verified as receiving valid MIDI data as it also drives one of my MIDI
keyboards.

So where does the 'PC UART' come into play since the MIDI connection doesn't
go to the FreeBSD motherboard? Are you saying the the Creative Soundblaster
Live! soundcard has a UART that is unable to properly handle/adjust to MIDI
data streams? Perhaps you thought that I was connecting the "midi connector"
to the FreeBSD system's serial port? Sorry.

I don't know about "av differential voltage converter" with respect to the
Creative Labs "midi cable" as it has MIDI DIN jacks on one end and a DB15
jack on the other.



On 19 May, Terry Lambert wrote:
> jimd@siu.edu wrote:
>> I have two MIDI keyboards: small, inexpensive Casiotone MT-240 that has
>> very nice builtin piano samples; large, moderately expensive Yamaha
>> PSR-210 with nice builtin brass, woodwind, and string samples. I use a
>> simple "midi connector" with a serial cable with two OUT's, two THRU's,
>> and one IN. I oftentimes use both keyboards for playback instruments along
>> with the Amiga builtin 4-channel sound chip.
> 
> FWIW: you will not be able to use this cable with a PC.  The
> MIDI data rate is not supported by the PC UART, which has a
> fixed set of clock rates available.  The Zilog UART on the
> Amiga (and on Sun systems, too) has a programmable clock rate
> and so is capable of operating at the MIDI baud rate (the cable
> is basically nothing more than av differential voltage converter).
> 
> -- Terry
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