On Sun, 5 Jan 2020 at 23:30, Guy Sotomayor via cctalk <[email protected]> wrote: > > Yes. We first started with Mach 3.0 build MK58. We did our final > fork at MK68. We made some *significant* changes from what CMU > had (things like changing mach messages from IPC to RPC) and a > whole lot of work in the area of scheduling.
Very interesting. If you are allowed to, you should blog about this somewhere -- it is historic stuff. > Yes, a lot of things were based on Mach. One OS that you're forgetting > is OS X. That is based upon Mach 2.5. Well, firstly, no, I wasn't. I didn't mention OS X, or macOS as it's called now, because it's based on NeXTstep. It's a later version of the same OS. Secondly, AIUI, NeXTstep used Mach 2.5 but one of the changes in Mac OS X 1.0 is that they moved to Mach 3 and updated the userland from BSD 4.4-Lite to FreeBSD then-current, hiring Jordan Hubbard to do much of that work.. > > MkLinux didn't get very far, either, did it? > > > I think that was the original Linux port for PPC. It was, and I think only on Apple hardware. There were a few dev builds and then it disappeared, IIRC. [*Checkes*] Yup, OldWorld-ROM NuBus PowerMacs, and later OldWorld PCI PowerMacs -- but later Linux supported PCI Macs directly. There were apparently 4 "developer releases", an R1 and an unfinished R2. Supplanted by Mac OS X, but apparently the Mach work really helped to get NeXTstep and "Rhapsody" bootstrapped on PowerMacs. -- Liam Proven - Profile: https://about.me/liamproven Email: [email protected] - Google Mail/Hangouts/Plus: [email protected] Twitter/Facebook/Flickr: lproven - Skype/LinkedIn: liamproven UK: +44 7939-087884 - ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053
