30 Jan
2012
30 Jan
'12
3:56 p.m.
On 30 Jan 2012 at 15:11, Fred Cisin wrote:
But, not all MIS-use them on the scale of Superbrain
and TRSDOS
Only in the sense of "misuse" being that used by common commonity
disk controllers. In fact, the possibilities for their use are
probably close to 255. For example, the Intel MDS800 "double
density" MMFM format uses 0B with a clock of 70 for a DAM or 08/72
for a DDAM (deleted DAM).
Most controllers can support DDAMs but few operating systems actually
use them. Most often, you see them used on the cylinder 0/track 0
volume header used by IBM 3740-compatible formats.
--Chuck