Conference napalm::commusic_v1

> ..
>        31.25Kbaud which is the speed that it's talking at. Can anyone
>        advise on whether this is likely to be true and if so, how
>        to do it.
        
	This is a pretty strange speed.  I definitely would find out for sure
	if it was stated correctly, else, the only thing outside of making
	a new interface would be to program yourself a DRV11-J into a serial
	interface or mabe better yet make a KXT11-CA application, if I remember
	correctly, it has a very wide range of selection for its clock speeds
	on its ports.  (At least you would have pascal and macro-11 to program
	in, but still the overhead of comm between the uVAX and the KXT.)


	I'm interested in how the final implementation is done....


		\rik

    31.25Kb is the actual speed. It's not that strange when you realize
    that it is based on a 500K Hertz clock divided by 8.
    
    Ted

        I don't think that it is strange. I am just wondering how to
        connect to it...
        

    If I can get to you via interoffice mail, I would be willing to
    send you a copy of the MIDI 1.0 Specification.  It contains
    enough information to build a MIDI hardware interface and
    describes the MIDI software protocol.
    
    -jim

    I thought about the same thing.  Piecing together a MV-I system
    out of spare parts, and using it until the real Atari ST software
    comes out.  I opened the KXT11 manual, and it looks like the right
    DEC product to do the comm.  You need to add opto-isolators and
    load resistors and such, but it looks like you can set the right
    baud rate.  Also, the KXT can be loaded with code to make it a
    useful I/O processor, ala MPU-401.  I'm not pursuing this at the
    moment, but anyone with access to QBUS systems and a spare KXT11
    (and nothing better to do for a month) might try it.
    
    GW

	Send me a copy of the MIDI spec,  I'd like to look at it...
	I'm real interested in getting into a midi system, and since I
	have a spare ba23 at home...If I can scrounge a KXT I might be able
	to do something. 

	Let me know...

		\rik  

	Another thing I never thought of before was that the r/t interfaces
	on the rainbow and pro might make for an interesting approach for
	somebody too...

		\rik

    Almost a year later...
    
    I am curious whatever became of this proposal?  I am just getting
    into music.  I have a 520 ST, so I have no need for such a system,
    but I wrote the MicroVAX driver for the KXT11.  I am always
    interested in potential applications, even though I passed the driver
    off to the MicroPower/Pascal group almost in the same time frame
    as the original proposal (around a year ago).
    
    						-Dave

    Ha!  I never found a spare KXT11 and the time to play with it.
    I do have the BA23 and tons of uVAX-1 parts.  I've also been told
    "No problem.  I'll get you a spare KXJ11 proto."  but my hands are
    still empty.  All of this stuff is way too expensive to buy yourself,
    except the KXT's of which I saw at least one version undergoing
    a fire sale ($300, I believe) under some DEC inventory cleanout
    special.  The idea's not dead, but I don't have the board.  Until
    I get the board, I won't allocate the time.  (And then there's the
    matter of falling into the posession of a ADV11, 12-bit 50 KHz
    sampling module, which are also very expensive.  Oh well.)
    
    Sorry to disappoint you,
    GW
    

Does any one out there has a MIDI spec? I would appreciate if sent to me
to Hudson. I will be visiting there in the next 2 week.

The mail stoop should be: Avraham Menachem HLO2-2/N7.

Would appreciate it very much. 
I tried to send a note to .4 but seems his machine is not on the net any more.

avraham

    I'm not sure of the note number, but we do have a "MIDI_SPEC" keyword
    tht should point you right to the document...
    
    Edd

    
    	Try looking on:
    
    
    			DWEEZL::Atari$Dsk:Midispec.arc
    
    		       (17.252)