Matt Patoray
I was looking at an issue of RCA "Broadcast News" from December 1975,... picture of the main rack mount unit shows an 8" floppy drive,....
Page 52 of the PDF (50 of the magazine) shows a photo of a floppy drive with a simple lever for a drive-eject. Probably a hard-sectored drive, produced by one of any number of 8-inch drive manufacturers of the mid-1970's. I "cover" the oldest floppy drives and controllers on my Web site, because Dr Gary Kildall and Dr. John Torode produced a floppy controller running CP/M in early 1974. The natural question is, what other floppy controllers were around at that time? They were non-microprocessor based controllers, intended for minicomputers or the earliest microprocessors. http://www.retrotechnology.com/dri/first_floppy.html Sykes and ICOM and others produced drives and controllers in the era. A look through ComputerWorld or other computer-trade magazines of 1975 and earlier may find an identifying ad for the RCA-used floppy drive. Herb Johnson -- Herbert R. Johnson, New Jersey in the USA http://www.retrotechnology.com OR .net preserve, recover, restore 1970's computing email: hjohnson AT retrotechnology DOT com or try later herbjohnson AT retrotechnology DOT info