[Coco] NitrOS9 booting sequence

[Dave Philipsen]

Thanks, Bill.  I'll take another crack at it tomorrow (actually later 
today).  If you look at what goes in the boot track file there is a 
little bit more than just the three modules.  The REL module has a 
little 6-byte preamble before it and the Krn module has about 33 bytes 
after the end of the module.  So I just do a 'merge preamble REL Boot 
Krn postamble > boottrack' to get my file for the boot track that should 
be exactly $1200 bytes long.  I'm pretty sure the boot track is ok and 
there's another issue like you say possibly with grfdrv or sysgo.  
Thanks for the info.

Dave Philipsen


On 9/2/2015 1:36 AM, Bill Pierce via Coco wrote:
> Dave, if I'm not mistaken, you'll need GRFDRV in the cmds dir as well. Grfdrv is loaded after sysgo and before the shell (I think).
> Also, I would have a "startup" that loads and links the shell. Any cmds used in the startup script also need to be in the cmds dir.
>  From the error code you listed, it's showing "Path Not Found" on the sysgo load.
> For the explination of the boot error codes, read this:
>
> https://dl.dropboxusercontent.com/u/23059963/Stuff/NitrOS-9%20Level%202%20Booting%20Errors%20and%20Trouble%20Shooting.doc
>
>   
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> Bill Pierce
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> -----Original Message-----
> From: Bill Nobel <b_nobel at hotmail.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Tue, Sep 1, 2015 6:48 pm
> Subject: Re: [Coco] NitrOS9 booting sequence
>
>
> I am assuming David, you have the standard descriptor/drivers in the boot file?
> If yes, it sounds like the padding on REL/BOOT & KRN might be off.  The vectors
> at the end of KRN need to be specifically at $FFF0.  If that checks out I would
> look at Init and Sysgo.
>
> Bill Nobel
>
>> On Sep 1, 2015, at 3:10 PM, Dave
> Philipsen <dave at davebiz.com> wrote:
>> Ok, so as everyone has probably figured
> out I am trying to make some modifications to the REL, Boot, and Krn modules in
> order to get the CoCo3 FPGA booting directly from the SD card without help from
> DW.  I'm also trying to accomplish this with native tools under NitrOS9 instead
> of using the Toolshed and Lwtools packages. So, today I was able to create a
> boottrack file and svdgen a disk.  When I try to boot it the screen shows all of
> the modules loaded through Clock2 and then at the end it prints  "i2xo*X" just
> before the boot fails.  I'm guessing that something is still missing on the boot
> disk.  I have an OS9Boot file, a sysgo file, and a CMDS directory with just
> "shell" in it.  What am I missing in order to complete the boot?
>> Dave
> Philipsen
>>
>>
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