On Tuesday, 4 December 2018 at 15:59:46 -0500, Paul Winalski wrote: > On 12/4/18, Paul Winalski wrote: >> >> Over the years GEM was targeted to MIPS, PRISM, Alpha, and Itanium >> machine architectures, and VMS, Unix, Linux, and Windows NT operating >> systems. We were working on x86 when Compaq sold the Alpha >> architecture and its engineering team (including GEM) to Intel. > > I forgot one: Tandem NonStop OS on Alpha, which was under development > at Compaq at the time that Compaq decided to sell off the Alpha > technology to Intel. Was this a start-from-scratch operation? The original Tandem OS (called Guardian at the time) was written in Tandem's TAL (Transaction Application Language, amongst other productions), a vague evolution of HP's SPL that looked more like Algol, starting in about 1974. That is also the earliest I know of an operating system being implemented entirely in a high level language. When Tandem started using other architectures (MIPS) in the late 1980s we discussed translating the whole thing to C. I was asked to write a 99% translator (maintaining comments and such), and failed. I lost track of the system after that, but it seems surprising that they would have started again from scratch. Greg -- Sent from my desktop computer. Finger grog@lemis.com for PGP public key. See complete headers for address and phone numbers. This message is digitally signed. If your Microsoft mail program reports problems, please read http://lemis.com/broken-MUA