From mboxrd@z Thu Jan 1 00:00:00 1970 From: wkt@tuhs.org (Warren Toomey) Date: Thu, 19 Jun 2014 08:42:26 +1000 Subject: [TUHS] Xinu In-Reply-To: References: <201406181748.s5IHmAjO011186@lancelot.cs.purdue.edu> Message-ID: <20140618224226.GA9897@www.oztivo.net> > On Wed, Jun 18, 2014 at 12:23 PM, Warren Toomey wrote: > > I should mention that I "ported" Xinu over to the Apple ] [ when I was at > > uni: I transliterated the C code into assembly and used an external 555 > > timer to generate the clock ticks. Fun times! On Wed, Jun 18, 2014 at 12:33:15PM -1000, Tim Newsham wrote: > is your code available? does it run on any of the modern apple][ emus? It's available at ftp://minnie.tuhs.org/pub/apple2/apple2xinu.tar.gz with source code, binaries, floopy images and some documentation. No, it won't run on a real Apple ][ without some work. I actually wrote it for an Apple clone which had bank-switched RAM and I made use of that to hide the BASIC ROM and store the OS in the upper 12K. You would also need to simulate a 10 or 20Hz NMI as well :-) Cheers, Warren