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Undocumented sysex message
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The following sysex message does not appear to be documented in the MR MIDI System Exclusive Specification Document Version 1.53/2.11-A, but works on my ZR-76. It can be used to transfer an MR sound program from a librarian or other device into an MR/ZR program.

	Single Sound Program Receive Request

	F0		System Exclusive Status Byte
	0F		Ensoniq Manufacturer Code
	09		MR Family ID Code

	00		MR-Rack Model ID Code
		or
	01/02		MR-61/76 Model ID Code

	nn		Device ID Number (0 to 127)

	02		Receive Request Command
	01		Single Sound Program Dump Request

	pp		Program Number (0 to 127)
	bb		Bank Number (0 to 127)

	bb		Data Block Size - 0  b06b05b04b03b02b01b00
	bb		Data Block Size - 0  b13b12b11b10b09b08b07
	bb		Data Block Size - 0  b20b19b18b17b16b15b14
	bb		Data Block Size - 0  b27b26b25b24b23b22b21
	0b		Data Block Size - 0  0  0  0  b31b30b29b28

	Start of Data Block

	[Section 4.1 Data Structure] ( 4-to-5 Bulk SysEx Data Encoded

	End of Data Block

	kk		14-Bit Checksum - LSByte
	kk		14-Bit Checksum - MSByte
	F7		End of System Exclusive

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MR Family Model Codes
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My ZR-76 transmits a model code of 04 in response to the universal sysex identity reply message.
The model codes for the MR family apear to be:

00 = MR-Rack
01 = MR-61
02 = MR-76
03 = ZR-61 ???
04 = ZR-76

I'm making an educated guess that a ZR-61 would be an 03, but I don't know for sure. (If anyone has a ZR-61 and wants to check, please let me know).

Even though the ZR-76 identifies itself as an 04, it will not respond to sysex messages using a model code of 02 (MR-76) or 04 (ZR-76). It responds only to model code of 00 or 01.

John Bair
http://www.fumph.com
jbair@fumph.com