Re: Unixisms on top of P8?

[D Finnigan <dog_cow@macgui.com>]

mdj wrote:
> On Thursday, 13 December 2012 16:04:56 UTC+10, Steve Nickolas  wrote:
>> I'm starting to wonder if it might actually be possible to build a 
>> 
>> Unix-like environment - I mean Bourne shell and the whole nine yards - on
>>
>> 
>> a //e...maybe not multitasking though...using cc65 or some other 
>> 
>> compiler...
> 
> I've always felt this was quite feasible on expanded IIe's and IIc's using
> RamWorks compatible memory cards. I'm sure you can make it work for
> 'academic' purposes with 128k, but I'm not sure I see the point.

One thing that you'd have to keep track of is the soft-switches, especially
the Language Card area. Say you've got a 1 MB RamWorks card, and process A
is using the LC area, but process B isn't. Well, you've got to set the
soft-switches correctly upon each context-switch.

I/O also becomes much slower with multiple banks.

I am still working on a multi-tasking system for Apple IIe. I have all the
hardware to do it now, but I am not writing much code. I am still in the
thinking stage to figure out how it will all work.

-- 
]DF$
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