In the early 1980's, a company in Toronto, Hazelcom Industries, produced a music synthesizer based on an LSI-11/23 running RSX-11M v3.2. The music part of it was written by David McLey, so the product was called the McLeyvier (pun intended).
Several people in the industry have told me that this was the best analog music synthesizer ever made. Sadly, it was introduced just as digital synthesizers were hitting their stride. Now, a small group of enthusiasts have banded together to restore the few remaining McLeyviers (only about eight were sold) to operating condition. If you have any knowledge about the McLeyvier, and are not already on our mailing list, PLEASE contact me. We are particularly interested in the following subjects: 1. McLeyvier hardware or software documentation. 2. DTC 520-1 disk controller and its DTC-11 Q-Bus host adapter. 3. Peritek VRG-Q Q-Bus graphics controller. Especially the RSX or RT-11 device drivers, or other software. 4. The location or owners of McLeyviers. Our current project is to replace the ST-506 disks with the David Gesswein MFM disk emulators. To do this, we need to determine the CRC algorithm used by DTC, which we cannot find any documentation for. Thank you, Alan Frisbie
