[sebhc] H17 ROM and disk info

Dave Dunfield dave04a at dunfield.com
Sat May 22 15:55:46 CDT 2004


Hi Steven,

>Remember that generally only "init" would write both the header and data.  
>Otherwise the header would be read and the data written.  That's why every 
>sector has two separate leader/sync/data/check groups with a small gap in 
>between.

It occured to me that it probably works this way - and I was going to ask
you.

>I put a couple of test programs from the H17 service manual in the tape 
>software area.  One checks the on-board write-protectable memory and the 
>other is for checking/adjusting rotational speed.  At ideal speed, there 
>should be a "200" displayed in the memory location on the front panel.

Thanks, I'll check it out.

Regards,
Dave
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dave04a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools: www.dunfield.com
com             Vintage computing equipment collector.
                http://www.parse.com/~ddunfield/museum/index.html

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