Re: LuaChip - The Project So Far

[Asko Kauppi <asko.kauppi@...>]

I don't think Erik's list was out of proportions.  In fact, us using 
Lua I think it's in the backbone to strive for simplicity.  Let's see 
how he does before shooting him down, eh? :)

As long as "custom memory manager" doesn't need a hw MMU (still luxury) 
I'm all for his list. TCP/IP can be arguable, but it sure broadens the 
scope a lot.  Well done!

-ak


Since you had deleted Erik's configuration, here it is:

> The software configuration will be as this:
> * A small multithreading kernel with custom memory manager
> * TCP/IP stack with DHCP client
> * service console thread (telnet 'ish) always running.
> * Small filesystem located in part of the flash
> * Lua distribution that has access to console, timers, uarts, gio and 
> network.
> * Lua support for starting threads and communication through the 
> console
> * Lua bootloader - a specific script on the flash will always be 
> executed when the chip is turned on (Unless a debug conditions is 
> reached within 3 seconds)



11.8.2004 kello 13:13, David Given kirjoitti:

 On Tuesday 10 August 2004 19:46, Erik Hougaard wrote:
> [...]
> > The software configuration will be as this:
>
> Ack! You've just pushed the complexity up by another order of 
> magnitude! What
> you have now is nothing *like* a embedded Lua system. What you have is 
> a
> single-chip computer running an OS like ucLinux or ECOS that just 
> happens to
> run a Lua interpreter as one of many user processes. It's going to be 
> big and
> expensive and have lots of RAM and ROM.
>
> You could well be better off trying to strip it down as much as 
> possible. Do
> you really *need* a threading kernel, for example? Or a TCP/IP stack? 
> Try
> studying PICs and embedded Z80s. You couldn't run Lua on one, but 
> that's the
> level of complexity that would be good to aim for...
>
> --
> +- David Given --McQ-+ "A psychic? That sounds like science fiction."
> |  dg@cowlark.com    | "Dear, you live on a spaceship."
> | (dg@tao-group.com) | "So?"
> +- www.cowlark.com --+ --- Firefly, _Objects in Space_