[Simh] Write sector headers to disk

[Larry Baker]

> 3. Store header words out of band somehow.  Last in the image file?
> In another file?

Perhaps the same name as the disk file with a . (dot) in front for the header words.  Ala Mac resource forks or NTFS alternate data streams.  Since Unix has no structure to its files, so you have to use the file system hierarchy to represent that.  I dislike hidden files in general, but I doubt much in SIMH would suffer if the .header file were to get left behind.  It seems pretty ephemeral, except perhaps during a sequence of diagnostics.

Larry Baker
US Geological Survey
650-329-5608
baker at usgs.gov



> On 25 Jun 2019, at 2:13:18 PM, simh-request at trailing-edge.com wrote:
> 
> I'm wondering what your opinions are reagarding this?  I see some options:
> 
> 1. Do not change SIMH.  Patch SALV to skip the verification.  Obviously
> this is quite quick and painless, but leaves me with a slightly
> dissatisfied feeling.  Some historical software isn't running properly.
> 
> 2. Add header words to the disk image file.  An incompatible change, but
> should of course be optional.
> 
> 3. Store header words out of band somehow.  Last in the image file?
> In another file?

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