Nine track file marks, Burroughs

Chuck Guzis cclist at
Sat Jan 9 22:18:38 CST 2021

On 1/9/21 4:23 PM, Jon Elson via cctalk wrote:
> On 01/09/2021 04:59 PM, Dennis Boone via cctalk wrote:
>> Jon,
>> Yes, you could.  The Burroughs doc seems to say the FM is supposed to be
>> there between every group of labels and the preceding or following data,
>> though.
> Well, then the only thing you can do is Magna-See or one of the dry
> magnetic viewers.

I can't say that I've ever observed that, but then, I probably never
looked for it either.  80 bytes starting with HDRx, etc. is a pretty
good indicator of the nature of the block.  I've seen lots of tapes with
81-character records, however. (Univac 36 bit systems for example).


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