[Coco] 248 errors in NitrOS-9 repository

[Gene Heskett]

On Monday 22 July 2013 18:10:08 Robert Gault did opine:

> From: Lothan <lothan at newsguy.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Sunday, July 21, 2013 5:11 PM
> Subject: Re: [Coco] 248 errors in NitrOS-9 repository
> 
> Well as my Internet connection is down and I'm at a library, I can't
> check the versions of mingw and msys I'm using but compiling Toolshed
> is not a problem.
> 
> Here is another problem with os9.exe which seems to be in os9format and
> os9gen. If you tell os9.exe to use a custom value for DD.BIT ( -c# )
> the disk won't format correctly for values -c3 or greater. The format
> process does not place the root directory in the correct location as it
> does not start at the beginning of a sector. The os9gen process ignores
> the value of DD.BIT so that the FAT does not have the bits for the
> kernel allocated in the correct location if even allocated.
> 
> It's not difficult to fix the os9gen.asm routines to allocate the
> correct bits for the kernel when DD.BIT >1. Finding the source of the
> problem in os9format.asm is proving difficult. The routine that
> determines the location of the root directory seems reasonable and I
> don't see why it should not start at the beginning of a sector.
> A routine in os9format, correctly assigns the size of the bit map for
> DD.BIT>1 even though I can't find where it checks DD.BIT.
> 
> Robert
> 
One of the written in several places rules for dd.bit is that if not 1, 
then it /must/ be a power of 2.  3 would be an illegal number that rbf 
itself cannot handle.

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Cheers, Gene
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