Re: [Lng-devel] Atari port

[TXG/MNX <tx...@xs...>]

Hi, 

> Maciej Witkowiak
> Sent: zaterdag 7 oktober 2006 10:36
> To: lng...@li...
> Subject: Re: [Lng-devel] Atari port
> 
> 2006/10/7, TXG/MNX <tx...@xs...>:
> > Hi,
> >
> > The atari port needs to be re-done for sure but I think more things 
> > would be documented to make it better multi-platform.
> 
> Probably Atari needs to be done, but I won't do it. I wrote 
> it in about a week or so without any previous knowledge about 
> Atari system.
> I have announced it to the Atari community, received some 
> comments and that's it. If Atari users don't care about LNG, 
> there will never be a proper port. A quick way to make Atari 
> port more usable is to write ramdisk filesystem and bundle 
> some of the apps on it with kernel image.

I agree a ramdisk would be good to use, when lunix will be loaded in the
normal 64Kb a ramdisk for the expanded machines..
My Atari XE machines do have 1Mb extra expanded memory... Ramdisk also are
fast...
 
> > On the c64 the port works, how does this machine handle it 
> to run with 
> > the OS and interupts stopped? Or how does this work on the 
> ORIC systems.
> > All these systems use the 6502 so we need to find the hardware 
> > differences and make that part separate from the kernel I think.
> 
> I think you should see the source code before asking those questions.
> Only ROM is turned off, the interrupts from timer are 
> enabled. Pretty much all kernel stuff is already divided into 
> architectures - initial setup, reset, keyboard, console and 
> serial drivers, etc.

I did know some of this... I thought the OS and Interupts did stop on the
8-bit... Atleast that seems to be one of the things it did crash... Need to
rewrite the stuff... The console/screen handling is the biggest part to
(re-)write on the 8-bit...

> As for disk I/O, C64 and its disk drives (also 64net/2 
> driver) work on higher level than read/write sector, so does 
> LNG. You would have to write DOS part: everything from 
> read/write sector to the level of open file, close file, 
> read/write byte/block from stream, show/make/remove/change directory.
> 
> ytm

The 8-bit doesn't need a DOS, most functions you describe are already inside
a diskdrive.... But I always thought LUNIX could work without a DOS. 

TXG/MNX