[Coco] Nitros9 boot codes

Tim Fadden t.fadden at cox.net
Tue Jan 7 01:59:39 EST 2014


Thanks to all that answered.  I'm going to put the info where I can find 
it when I need it again!

Tim

On 1/6/2014 8:52 PM, Robert Gault wrote:
>
>>
>> I am ending up with:
>>
>> SysGo i2xo*m
>>
>> boot failed   :-(
>>
>
> So continuing with what Bill posted, that message, Tim, probably means:
>
> i=Init module found
> 2=entered OS9p2 aka krnp2
> x= probably tried to chd to default device from Init /DD
> o=tried to open default output from Init /Term
>
> m=ascii $6D  $6D+$80=$ED = RAM full
>
>
> The original text for bootdebug contains
>
> "  When your system boots now, you'll see a series of characters 
> printed out
> on the boot screen.  Here's what they mean, in the order that you see 
> them.
>
> 1 - OS9p1
> t - boot tried (may be output multiple times, but only if you get 
> 'FAILED')
> b - calling Boot module
> 0 - Boot trying to read LSN0
> F - LSN0 is being read off of the offset cylinder in an Eliminator system
> . - Boot prints out one period for each sector of your OS9Boot file
> b - returned OK from boot
> i - Init module found
> 2 - entered OS9p2
> x - tried to chd/chx to default device from Init module - usually /DD
> o - tried to open default output device from Init module - usually /Term
> C - trying to fork CC3Go
> c - entered CC3Go
> x - CC3Go trying to CHX to ./CMDS
> d - CC3Go trying to CHD to /DD
> x - CC3Go trying to CHX to /DD/CMDS (no idea why this is done)
> p - CC3Go just about to try F$ID and F$GPrDsc calls
> w - OS9 will perform a warm start on <RESET> after this is printed out
> s - CC3Go trying to load Shell
> S - CC3Go trying to fork 'shell startup -p'
> a - CC3Go forking 'autoex'
>
>   You probably won't see anything after the 'c'-entered CC3Go, but the 
> data
> is still there. If you can, do a 'ded /md@', and go to sector $760.  
> You'll
> see all of the information there.
>
>   If your system REALLY crashes, go back to DECB, and type the 
> following line:
>
> FOR A = &H6008 TO &H6100:PRINT CHR$(PEEK(A));:NEXT
>
>   All of the characters will be printed out for your inspection.
>
>   I hope this makes debugging boot disks a LOT easier!  I know I wouldn't
> want to go back to not knowing what was happening.
>
>   Alan DeKok."
>
> Robert
>
>
>
>
> -- 
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>




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