Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!unmvax!indri!uflorida!gatech!hubcap!ncrcae!ncr-sd!crash!pnet01!jdeitch From: jdeitch@pnet01.cts.com (Jim Deitch) Newsgroups: comp.os.minix Subject: Re: Apple ][ Minix Message-ID: <4167@crash.cts.com> Date: 8 May 89 15:57:05 GMT Sender: news@crash.cts.com Organization: People-Net [pnet01], El Cajon CA Lines: 33 henry@utzoo.uucp (Henry Spencer) writes: >In article <4155@crash.cts.com> jca@pnet01.cts.com (John C. Archambeau) writes: >>I have no qualms with seeing a 65816 Minix (ala Apple //gs) but on a stock >>Apple with a 6502 and a 64k address space makes it impossible. The 1.2 PC >>kernel is 89K after it's booted, and you need a ramdisk for the root file >>system, so that's just 360K of RAM just to start up... > >On the other hand, Mini-UNIX (a cut-down V6 Unix) ran happily, if not too >quickly, in 56KB on small pdp11s, and there was at least one further-cut >variant that could run in still less. "Run" here means things like "cc", >mind you, not just "echo". :-) So it's not inherently impossible, unless >6502 code density is really dreadful (which it might be, given what a >horror that CPU is), if you're willing to work hard and do without the >ramdisk. Difficult, yes... > >(I remember a Mini-UNIX system on a 56KB LSI-11 with a small, slow hard >disk supporting several students programming in a database class. I also >remember a Mini-UNIX that swapped on 8-inch floppies. Mind you, neither >was fast, and I'm glad *I* didn't have to use either...) Or how about OS-9? It ran on a 64k Radio Shack Color Computer, with multi-user and multi-tasking. I ran it on a hard disk so it wasn't to bad in the multi-user mode. It had a C compiler, and a couple of other niceties, like a seperate execution directory and data directory. Jim UUCP: {nosc ucsd hplabs!hp-sdd}!crash!pnet01!jdeitch ARPA: crash!pnet01!jdeitch@nosc.mil INET: jdeitch@pnet01.cts.com