[Simh] SIMH tape images to real tapes

Cory Smelosky b4 at gewt.net
Fri May 23 21:16:39 EDT 2014


On Fri, 23 May 2014, Larry Baker wrote:

> Cory,
>
> "Fatal drive error" means the SIMH decoder failed a validation test.  Meaning, it didn't match Bob Supnik's description of the format.  If you first run TAPELOOK on the SIMH image, the same thing will probably happen.  Where did you download the RSTS tape image.  Are you sure it is a SIMH mag tape image?
>
> It is possible that this will happen at the end of a valid SIMH mag tape image.  I didn't do anything to stop reading bytes at what would be, e.g., a Unix EOF.  That is because I am reading the file in block mode, not record mode.  For example, the tape image I was working with did have garbage at the end of the file.  But, that did not affect the MTD image creation.
>

It happened at the end.

> If you have a valid SIMH mag tape image, my TAPELOOK program should show you what you've got.  If the conversion worked, you should see the same contents when you run TAPELOOK on the converted MTD mag tape image.
>

Looks like the converted tape image is correct.


-- 
Cory Smelosky
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