24 Feb
2007
24 Feb
'07
9:17 a.m.
On 23 Feb 2007 at 18:53, info wrote:
Does anyone have the jumper settings for the Teac 55
disk drive? I'm
trying to one working on a old CP/M machine with a Shugart 5 1/4
interface. It allows me to format the disk but won't read the disk back.
What everyone said--the letters and numbers after the FD55 mean a
whole bunch.
Old FORMAT programs on CP/M machines often wrote the format, then
verified in a separate pass. Since all writing a format involves is
waiting for the index hole then spraying a data stream until the
index is once again seen, it's no guarantee that your drive is
capable of writing or reading anything.
There are also a bunch of variables that hinge on what your CP/M
machine needs, such as requiring a READY/ line, use of the HEAD LOAD
feature, etc.
Knowing what your CP/M system is, in other words, is also part of the
puzzle.
Cheers,
Chuck