Thanks for trying to help Will. I may be exaggerating slightly - perhaps more like a minute. I'll get back to you later tonight with exact timings, along with a MIDI file from my older backups. I'll get hold of the ER-1's MIDI implementation table too. My knowledge of sysex is next to none, but when you go to start the dump there is a choice between pattern memory, song memory, or all data. I've been trying "All", but I'll see if "Ptn" or "Sng" works. I could live with just keeping pattern data for now I guess. This is the only switchable thing on the device, as far as I can tell. There is a MIDI input filter, but I always have this set to all. cheers, Oliver Date: Tue, 9 Dec 2014 20:31:29 +0000 From: Will Godfrey <willgodfrey(a)musically.me.uk> To: linux-audio-user(a)lists.linuxaudio.org Subject: Re: [LAU] MIDI sysex over Firewire - not supported by Jack MIDI? Message-ID: <20141209203129.63fa9d63@debian> Content-Type: text/plain; charset=US-ASCII On Tue, 09 Dec 2014 20:00:57 +0000 oli_kester <oli_kester(a)zoho.com> wrote: > By size, are we talking the length of the recording, or the throughput? Because as far as I can tell there is no MIDI being received at all when I tell the device to transmit. The process lasts about two or three minutes by the way. > > Would altering jack settings make any difference? Can I use one of the drivers other than firewire? > That is a seriously big chunk of data! Using Simple Sysexer My Yamaha QS300 takes about 30 seconds for a full dump. It's a long time since I did any work with programs to send and receive SYSEX (Acorn Archimedes) but I seem to remember that the sender could elect to send just one massive block of data or a bunch of smaller ones. Do you know which the Korg uses (is it switchable?) -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.