From mboxrd@z Thu Jan 1 00:00:00 1970 From: athornton at gmail.com (Adam Thornton) Date: Tue, 10 Nov 2020 17:12:27 -0700 Subject: [COFF] Building OS from source in the olden days In-Reply-To: References: <20201110231118.GW99027@eureka.lemis.com> <20201111000621.GY99027@eureka.lemis.com> Message-ID: I don't know enough about MVS but it too is public domain until 3.8j or so, and I would expect that the way you serviced the system was about the same: patch the assembly code from PTFs (or whatever those are called in MVS-land), reassemble the modules, relink into a kernel/system image/whatever the os-appropriate nomenclature is. Adam On Tue, Nov 10, 2020 at 5:10 PM Adam Thornton wrote: > Pretty sure this VM/370 reference has, somewhere in its rather formidable > bulk, what you're looking for. Start around p. 225: > > > http://bitsavers.informatik.uni-stuttgart.de/pdf/ibm/370/VM_370/Release_6/GC20-1801-10_VM370_Sysgen_Rel_6_Jan80.pdf > > Now granted VM was never the most popular of the IBM OSes. But it was > delivered (and patched) as assembler sources. You may also enjoy Melinda > Varian's "What Mother Never Told You about VM Service." > http://www.leeandmelindavarian.com/Melinda/tutorial.pdf > > On Tue, Nov 10, 2020 at 5:06 PM Greg 'groggy' Lehey > wrote: > >> On Tuesday, 10 November 2020 at 18:45:15 -0500, Clem Cole wrote: >> > On Tue, Nov 10, 2020 at 6:11 PM Greg 'groggy' Lehey >> wrote: >> > >> >> I'm currently reviewing a paper about Unix and Linux, and I made the >> >> comment that in the olden days the normal way to build an OS image for >> >> a big computer was from source. Now I've been asked for a reference, >> >> and I can't find one! Can anybody help? >> > >> > Mumble -- For IBM and DEC in the 60s and early 70s, the manufactures >> > distributed the (assembler) sources to the OS and we could (and did) >> > build from source but usually just built parts. >> >> Right, this is my recollection. >> >> > Remember, the target was the manufacturers HW so they were not >> > giving away much. >> >> Again, my assessment. >> >> The real issue is: where can I find a reference? Google brings up so >> many false positives that it's not worth the trouble, and Wikipedia's >> pages on "System generation" are too vague. >> >> Greg >> -- >> Sent from my desktop computer. >> Finger grog at 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 >> _______________________________________________ >> COFF mailing list >> COFF at minnie.tuhs.org >> https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff >> > -------------- next part -------------- An HTML attachment was scrubbed... URL: