[Coco] Microware OS-9 Manuals

[Greg Law]

Thanks, these don't have the complete LSN 0 information either. You have the 
Tandy OS-9 Level 2 Technical Reference and the Microware OS-9 System 
Programmer's Manual (which will come in handy for a bit of 
cross-referencing), but neither of these completely cover LSN 0. Both these 
have DD.SPT (sectors per track) followed by DD.RSV (reserved) and I think 
one of the two reserved bytes is actually something like DD.T0S that 
specifies the number of sectors in Track 0 since it can be different than 
DD.SPT. I think the Gimix and other SWTPC versions of OS-9 used something 
like 10 sectors on Track 0 and 16 or 18 sectors for all remaining tracks.

I see DD.T0S outlined in the device descriptor and in the path descriptor, 
but I'd swear it should be on LSN 0 as well but the Tandy manuals omit this 
information.

-----Original Message----- 
From: Michael Rowen
Sent: Thursday, November 28, 2013 9:30 AM
To: CoCoList for Color Computer Enthusiasts
Subject: Re: [Coco] Microware OS-9 Manuals

Greg,

You can find complete PDFs at cococoding.com.







Greg Law <glaw at live.com> wrote:

>Does anyone have or know where I might obtain scanned or text versions of 
>the Microware OS-9 Level 2 manuals? I’m looking through the NitrOS-9 
>Technical Reference and noticed that the layout of LSN 0 is not quite 
>kosher. Specifically, it’s missing the information on the non-CoCo disk 
>formats that have T0S potentially set to a different sector size than the 
>rest of the disk. This makes me wonder how much other information might be 
>missing from the NitrOS-9 documentation.
>
>I’d like to get a complete set of the Microware manuals if they are 
>available, but I’ll take what I can get.
>
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