[Toybox] toybox on Atari ST

Rob Landley rob at landley.net
Wed Aug 24 18:54:24 PDT 2016


On 08/24/2016 04:48 PM, Matthias Reis wrote:
> 16 08:21 AM, Matthias Reis wrote:
>> Two things:
>>
>> 1) You'll want to ask Rich Felker about the fdpic binary format (which
>> is more efficient than binflt, especially when it comes to sharing
>> memory segments).
>>
>> 2) Toybox can build individual commands standalone (make sed cat ls),
>> and there's a "make change" target that builds them all in the "change"
>> subdirectory. (A few don't build/work standline yet, but I've got most
>> of them working.)
>>
>> That gets the size of the currently loaded image down smaller. You might
>> be able to run it in 4 megs?
> 
> I've also thought about replacing the TOS ROM on the Atari Mainboard
> with a Linux Flash-ROM, but that would mean that the kernel has to be no
> larger than 512 kbyte. Then I would have still almost 1 Meg of free RAM
> and a real "Linux Atari". I just opened the case and found out that the
> mainboard has 32 x 256 kbit chips, and the replacement 32 x 1 mbit chips
> are probably very hard to find.
> 
> Coming back to the topic, I will simply test the RAM usage with the
> emulator and also consider the fdpic binary format you mentioned :)
> 
> Thanks for the advice!

Here's a Youtube presentation you might find useful about execute in
place (out of ROM) on nommu:

http://elinux.org/images/9/90/Linux_for_Microcontrollers-_From_Marginal_to_Mainstream.pdf
http://www.youtube.com/watch?v=-vSZHVXp5Cw

> Matthias

Rob


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