[TUHS] Xinu

Steve Nickolas usotsuki at buric.co
Thu Jun 19 14:39:48 AEST 2014

On Thu, 19 Jun 2014, Warren Toomey wrote:

>> On Wed, Jun 18, 2014 at 12:23 PM, Warren Toomey <wkt at tuhs.org> 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 :-)

Well, I usually assume an Apple ][ at least has THAT ability (as any with 
at least 64K will) :P, but the NMI issue would be the problem. :/


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