Midi Line Code Question (Low Level)

[John Speth]

Was this the EM DIY project that was scandalously reported to never have been built by the author and confirmed to have no possibility of working by those who did build it?

John Speth
Object Engineering, Inc.
johns at oei.com

-----Original Message-----
From:	[|[| Philip Pilgrim |]|] [SMTP:thelab at sprint.ca]
Sent:	Tuesday, June 09, 1998 6:37 AM
To:	synth diy
Subject:	Midi Line Code Question (Low Level)

Hi all,

I'm happily integrating my 256 pot midi controller UP however the midi
output section is causing much grief. I have a series of parallel to
seriel shift registers that I load then shift out at the proper rate
howver the message is some how corrupted. I verified that the bits in
the massage are correct:

F0 7F AA DD F7
AA is pot address
DD is pot data
|=start and stop bytes = binary one

|11110000||01111111||aaaaaaaa||dddddddd||11110111|



I am conforming to 0 = current on.

1.Is there any special line code for midi? 
2.Does a 1 have to return to zero before a new 1 can be sent?
3. Is there a better list for asking these MIDI hardware questions?
4. I was given a similar schematic from an old electronic musician mag
however it's message format is weird.
|mmmmmmm||nnnnnnnn0|oooooooo0|| 
(I can forward the EM schematic for someone to take a peek)

Thanks
Philip
-- 
Philip Pilgrim          	The Lab 
5 Evan's Drive          	- Analog/Digital Recording/Processing
Hammonds Plains       		- Computer/Synth Interfacing
Nova Scotia, Canada   		- Hardware/Software Development
B4B 1M8                   

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