images via Mark via
this electro-music.com thread (note this is for sale): "The OpcodeStudio 5LX is a Macintosh MIDI interface. Bitd, this was a monster. It has twice the computing power of a Mac Plus , 256KB of RAM for internal patch storage, 15 MIDI inputs and 15 MIDI outputs. It has two foot switch inputs, a foot pedal input that also accepts logarithmic CV, SMPTE in and out, and an input to sync to audio.
Apparently, some people have been able to get it to work as an interface with OS X. Please take a look on the web. It can also be configured as an extremely powerful stand-alone patchbay/filter with any Mac that can run OS 9, 8, or 7. It can filter, merge, re-channel, split by note and velocity, re-assign and modify control values, etc. It can route MIDI data from any combination of inputs and internal programs to any output. These patches can then be recalled via program change.
This unit has been upgraded to the latest ROM, and includes the original ROM chips, original box, software discs, and all the manuals. It is in excellent cosmetic condition. I'm the original owner, and it worked perfectly the last time I used it, but I have no way to test it now.
Questions and comments welcome.
Email: mark (at) primatesynthesis (dot) com"