AN/UYKs

William Donzelli wrote: Yes. The new instructions were created (in the same fashion as DG later did with the Eclipse) by using instructions that were effectively no-ops. Anything that was willing to run on an unmapped Nova 800 should be willing to run on the 16xx machines. Did you get programmer's consoles with any of these machines? All ROLM machines implemented the Nova I/O bus, albeit with very different physical characteristics. This produced an interesting problem with respect to one of the largest sales of the 16xx -- the GLCM/SLCM program at McDonnell/Douglas. The 1602 and 1666 (one of each, I believe) are used in the erector and launch systems; when the Nuclear Assurance folks found out that the Nova I/O bus lacked parity they freaked. ...which eventually evolved to enclosed plenums with forced air in the Hawk/32 (which implemented the MV instruction set). DesignData (www.designdata.com) ended up with most of the prints and spares for ROLM machines; they may be able to help with more detailed technical information. -- Chris Kennedy chris(a)mainecoon.com http://www.mainecoon.com PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97