I wrote “Everyone’s always surprised when I tell them about an OS written in COBOL”. Bruce Ray responded “Technically, the operating system and COBOL compiler/interpreter were written in Nova assembler, not written in COBOL. It ran programs written in IPI’s COBOL language – okay, okay, a technical quibble?”. So if he’s right Wikipedia should be corrected, they say “BLIS/COBOL is a discontinued operating system that was written in COBOL. It is the only such system to gain reasonably wide acceptance.”
