There's a museum in otowa that might be some.of the stuff ur looking for On Jun 14, 2017 1:02 PM, "Alan Frisbie via cctalk" <cctalk@classiccmp.org> wrote:
> Al Kossow <a...@bitsavers.org> wrote: > > Alan Frisbie via cctalk wrote: > > > > Our current project is to replace the ST-506 disks with > > > the David Gesswein MFM disk emulators. To do this, we > > > need to determine the CRC algorithm used by DTC, which we > > > cannot find any documentation for. > > > did you ask david to try decoding the data for you? he's been > > very good at doing so. > > Yes, I've discussed it with David, but we're waiting until > we have the test rig set up before attacking it in depth. > That should be in another week or two. > > > DTC documentation should be on bitsavers > > Yes, for which I am extremely grateful! The DTC-11-1 host > adapter manual is particularly valuable. While there is a > manual for the DTC-520A and the 500DB Series, there isn't one > for the 520-1. It's possible that the 520A is the same as > the 520-1, but we're not sure yet. > > In any event, the CRC information is not in the manuals. We'll > probably start by just experimenting with common polynomials. > Why would DTC engineers NOT use proven algorithms? :-) > > Thanks, > Alan Frisbie >
