On Sat, 2 Jun 2001, Jeff Hellige wrote:
> >Ah, I see. It's some whacko custom thingie. Didn't the Lisa originally
> >use some kind of ProFile-ish thing (custom interface, custom drive
> >electronix, etc.).
>
> I opened up my 5meg Profile hard disk finally and found that
> it has a ST-506 inside of it coupled to a couple of Apple coverter
> cards. Most of the case of those Profiles is taken up by the PSU.
> At least that bodes well for eventually getting it running again if
> the drive itself appears to be fairly normal. Without bothering the
> drive geometry settings, if there are any, wouldn't any MFM drive
> attached to this setup then appear to the system to be the 506?
Likely, but you must be sure that it has at least 4 heads and 153
cylinders. The cylinder part is no problem - probably nothing available
today would have less :) Another factor to consider is that the ST-506
did not have buffered seek IIRC. That is not likely to be a concern
either, but if you were going from a modern controller to the 506 it
might be a problem.
- don
> Jeff
> --
> Collector of Classic Microcomputers and Video Game Systems:
> Home of the TRS-80 Model 2000 FAQ File
> http://www.geocities.com/siliconvalley/lakes/6757
>
>
Received on Sat Jun 02 2001 - 15:57:48 BST