Re: 8250 help needed

From: Nicolas Welte (
Date: 1999-06-04 22:05:04

Andre Fachat wrote:
> Nicolas Welte wrote:
> > This is not needed, prlink stops to transfer the image when the error
> > occurs, so the 8050 image is perfect. It's just that the drives really
> Can you not modify prlink to ignore tracks 78 an above?

Maybe I could, but it makes no sense: I have a box of disks and I don't
know which ones are single and which ones are double sided. I had to
modify it in a way that it detects the disk type and then uses 77 or 144

> > makes a lot of noise at the end of each transfer :-( Also, this
> > particular 8250 currently is a single drive, because the spindle motor
> > needs service. I'm happy that it works at least this way, when I got it
> I have a 8250 (built into the 8296D) and an SFD 1001.
> Unfortunately the SFD1001 seems t be
> a bit out of alignement.

What makes you think so? Today I also got a SFD1001 and I also thought
that it's misaligned: It can't read the disks that came with the 8250.
But it formats disks just fine, and reads them back in. BUT: The 8250
also reads this disk (at least the dir). And even a freshly 8250
formatted disk won't work in the SFD. This is very strange...

> And both say, when I try to format a disk "format speed error".
> I havenīt gotten to investigate yet, but it might
> be related to using 1541 disks (48tpi) instead of the QD disks.

So far it worked fine for me with the cheaper disks. I have some QD
disks (they don't say QD, but 2S/2D 96tpi, which should be the same)
which I got from the University trash, and they're formatted in CBM DOS
1 format (670 blocks free)! If you like some to make experiments with


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