Re: U0>M1 on the 1571

From: Nicolas Welte (
Date: 2001-10-17 10:20:58

Ruud Baltissen wrote:
> Hallo Nick,
> > it definitely involves some mechanical noises.
> Just before ending the routine it checks if the disk has to be initialised.
> Could be a try to read the BAM.

It does initialize the disk in any case. The check it does is for a flag in
the burst command that does suppress the initialization. I don't remember
which bit it is, maybe bit 7 or so. So instead of sending U0>M1 you would
send "U0"+CHR$(x)+"M1", with x being the correct value. A look into the 1571
manual should reveal the correct value.


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