[Coco] Issues with NitrOS9 build

[Gene Heskett]

On Saturday 25 January 2014 15:30:13 Tormod Volden did opine:

> On Sat, Jan 25, 2014 at 3:38 PM, Robert Gault wrote:
> > Bob Devries wrote:
> >> Well, I got it to work, but I fail to understand why.
> >> 
> >> I changed offset $10 (DD.FMT) in LSN 0 from $07 to $03, and it boots
> >> correctly.
> >> 
> >> That change makes the disk a 48TPI instead of 96TPI.
> >> 
> >> Why does the TPI setting have *any* effect on the operation
> >> especially in an
> >> emulator. *something's* not right here.
> > 
> > Strange, I just looked at the repository and don't see why the DD.FMT
> > should be 96tpi. Rules.mak defines 80-track disk as follows.
> > 
> > OS9FORMAT_DS80  = os9 format -e -t80 -ds -dd
> > 
> > Unless lwtools has changed I don't see why DD.FMT changed on your
> > disks.
> 
> Where are these things documented? I mean 80 tracks, double sided,
> double density should set specific bits in LSN0, and I people here are
> saying which and so on, but where can I read the whole, authoritative
> story?
> 
> Is this the best shot?
> http://sourceforge.net/apps/mediawiki/nitros9/index.php?title=NitrOS-9_T
> echnical_Reference#Identification_Sector_.28LSN_0.29

Unless someone has made a typu in making it digital, yes.  It is not what I 
would call well worded, almost too concise, but its there.
 
> Before anything else, I would like to be assured that Toolshed "os9
> format" is doing the right thing.
> 
> Tormod
> 
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Cheers, Gene
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