On 7/7/10 6:06 AM, Christian Corti wrote:
On Tue, 6 Jul 2010, Al Kossow wrote:
FYI, from a while ago:
[...]
Thanks for the pointer!
But I doubt that I will be able to read the drive with a Xylogics 451,
for example. According to the Xylogics manual, there are two supported
disk formats, the 440 format and the 450 format. They differ in the
header field, the SYNC byte is $98 resp. $CC, and header byte 2
additionally contains a "sector" field. The format and sector size is
configured by several PROMs. Not to speak from other controllers...
Any way, I will give it a try.
Also, I don't know if this will be helpful or not, but the Xylogics
450/451 format is not compatible with the 7053/753 format. (I learned
that the hard way at work around 1993 or so, trying to move existing
451-controlled disks to the much faster 7053 and 753 controllers)
-Dave
--
Dave McGuire
Port Charlotte, FL