Re: Porting GSOS to Single board computers

From	Michael Black <et472@ncf.ca>
Newsgroups	comp.sys.apple2
Subject	Re: Porting GSOS to Single board computers
Date	2015-08-13 00:22 -0400
Organization	National Capital Freenet, Ottawa, Ontario, Canada
Message-ID	<alpine.LNX.2.02.1508130020580.32413@darkstar.example.org> (permalink)
References	<thej-1438806539@macgui.com> <benoit0123-1439218659@macgui.com> <d7727ccf-5243-44a0-96e1-74f484866413@googlegroups.com>

Show all headers | View raw

On Wed, 12 Aug 2015, sicklittlemonkey wrote:

> On Tuesday, 11 August 2015 02:57:42 UTC+12, Benoit Gilon  wrote:
>> I would suggest that people looking for alternative to linux on the R-Pi
>> will get a look at RISC OS
>
> Yeah, RISC OS was great back in the day, and it felt great to boot it up again on the Pi.
>
> About porting assembly above, a friend and I ported a game we wrote - coincidentally from ARM to x86. I just typed up a simple mapping for the most common instructions and stuck it on the wall. Most of our library was ported in a couple of weeks. (The game itself was in C, so it worked when the library was done.)
>
> Anyway, the porting was simple translation for logic stuff, but as soon as you hit hardware access it was down the rabbit hole. I expect it would be much the same with an OS.
>
> And what would be the point? All current GS software is targeted at 65816. I suppose you could dream up some kind of binary translator for stuff that can't be recompiled ... But I think it will remain that. Just a dream. ; - )
>
> In fact RISC OS came with a nice BBC (6502) emulator in ROM. We wrote an Apple II emulator in ARM assembly which was a lot of fun.
>
And yet, when Apple came along with the Power PCs, they included an 
emulator to run 68000 programs.  The idea was to make sure there were 
programs that could run on the new computers, and emulation was the way 
initially.

   Michael

Thread

Porting GSOS to Single board computers TheJ <thej@shaw.ca> - 2015-08-05 20:27 +0000
  Re: Porting GSOS to Single board computers Steve Nickolas <usotsuki@buric.co> - 2015-08-06 06:01 +0200
    Re: Porting GSOS to Single board computers Michael J. Mahon <mjmahon@aol.com> - 2015-08-05 23:46 -0500
      Re: Porting GSOS to Single board computers TheJ <thej@shaw.ca> - 2015-08-06 05:22 +0000
        Re: Porting GSOS to Single board computers Stavros Karatsoridis <skaratso@gmail.com> - 2015-08-06 06:31 -0700
          Re: Porting GSOS to Single board computers TheJ <thej@shaw.ca> - 2015-08-06 17:28 +0000
            Re: Porting GSOS to Single board computers Stavros Karatsoridis <skaratso@gmail.com> - 2015-08-06 13:19 -0700
            Re: Porting GSOS to Single board computers wssimms@gmail.com - 2015-08-06 17:55 -0700
  Re: Porting GSOS to Single board computers Gordon Henderson <gordon+usenet@drogon.net> - 2015-08-06 11:30 +0000
  Re: Porting GSOS to Single board computers Benoit0123 <bgilon@free.fr> - 2015-08-10 14:56 +0000
    Re: Porting GSOS to Single board computers sicklittlemonkey <nick.westgate@gmail.com> - 2015-08-12 05:18 -0700
      Re: Porting GSOS to Single board computers David Schmidt <schmidtd@my-deja.com> - 2015-08-12 16:00 -0400
      Re: Porting GSOS to Single board computers Michael Black <et472@ncf.ca> - 2015-08-13 00:22 -0400
        Re: Porting GSOS to Single board computers wssimms@gmail.com - 2015-08-12 17:49 -0700
          Re: Porting GSOS to Single board computers misterlott@gmail.com - 2015-10-26 14:47 -0700
            Re: Porting GSOS to Single board computers Don Bruder <dakidd@sonic.net> - 2015-10-26 15:27 -0700
          Re: Porting GSOS to Single board computers John Brooks <jbrooks@blueshiftinc.com> - 2015-10-26 16:24 -0700
            Re: Porting GSOS to Single board computers D Finnigan <dog_cow@macgui.com> - 2015-10-27 14:29 +0000
              Re: Porting GSOS to Single board computers Michael J. Mahon <mjmahon@aol.com> - 2015-10-27 17:08 -0500
                Re: Porting GSOS to Single board computers D Finnigan <dog_cow@macgui.com> - 2015-10-28 00:51 +0000
                Re: Porting GSOS to Single board computers Michael J. Mahon <mjmahon@aol.com> - 2015-10-28 15:06 -0500
              Re: Porting GSOS to Single board computers misterlott@gmail.com - 2015-10-30 12:40 -0700
            Re: Porting GSOS to Single board computers scott@alfter.diespammersdie.us (Scott Alfter) - 2015-10-28 17:43 +0000
              Re: Porting GSOS to Single board computers Michael Black <et472@ncf.ca> - 2015-10-28 14:59 -0400
                Re: Porting GSOS to Single board computers scott@alfter.diespammersdie.us (Scott Alfter) - 2015-10-29 16:16 +0000
                Re: Porting GSOS to Single board computers Gordon Henderson <gordon+usenet@drogon.net> - 2015-11-01 10:55 +0000

csiph-web