RL02-USB Controller Status/Problem

Pete Turnbull pete at dunnington.plus.com
Tue Apr 7 12:21:53 CDT 2015

On 07/04/2015 16:56, Johnny Billquist wrote:
> On 2015-04-07 15:14, Pete Turnbull wrote:
>> Actually COPY/DEV under RT-11 is commonly used, especially for non-RT-11
>> packs.  I can't remember what RSX does, but RT-11 /does/ deal with the
>> bad block table, by not copying the last track, and copying remapped
>> blocks.
> But that don't make sense. You cannot just move one block somewhere else
> because it is bad on the target device. Or just ignore a block because
> it is bad on the source device.

Nevertheless, what I wrote is what RT-11 COPY does.

> And "remapped" must be something very local to RT-11. RSX do not remap
> any blocks. A block that is bad, is bad. It is still there.

Well, yes, it's still bad, and still there, but all the RT-11 utilities 
use the substitute block.


Pete Turnbull

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