Xerox 820 family almost complete

On Wed, 24 Feb 1999, Joe wrote: No, and for a variety of reasons, Joe. First. the 820 can only read single density disks and the TeleVideo disks are all double density. Even the DD 820-II disk uses a single density first track, so it would choke too. Second, the Xerox 820 disks read all of the first side before even venturing into the second side, whereas, the TeleVideo machines read the tracks on both sides of the disk before moving the heads to the nexr track. Third, there are other format differences also. Different number of sectors per track, different skew, ... As to the Televideo disks, most of the machines can read/write another models disks. However, there is much less commonality between CP/M operating systems used. A few will interchange, others will not. - don