Regular speed drives can be accessed from Dos if they are connected to
the primary controller at the A: or B: location. High speed drives cannot
be accessed from Dos, with the exception of 2X (non-SDS) drives connected
to the CompatiCard IV controller. The Allegro controllers
do not support Dos drive access.
Most applications that require Dos access are better handled by copying the
diskette to or from the Rambodisk using DiskDupe and then
doing Dos file manipulation on the Rambodisk.
If Dos does not sense the disk change:
If you are running a batch file using ALTALK that requires access to
the drive from Dos but Dos is not recognizing the disk change line
(i.e. a directory of the current disk always reports the same
directory that was reported for the first disk) then you need to use a
driver that does not use change line detection. If you are using the
A: or B: drive then if you are running Dos 5.0 or above then you can
re-specify the driver parameters using the DRIVPARM command. For
example you could load the following line to CONFIG.SYS to redefine
drive B: (drive position 1) as a 1.44Mb drive (type 7) with no change
line detection (/C not specified):
DRIVPARM= /D:1 /F:7
Sony 1.44Mb works with DiskDupe but not with the Dos drivers:
The Sony 73W 1.44Mb drive that is often used in autoloaders has a
jumper (SL5) that has to be soldered in the B position to work with
the Dos drivers. It is found on the circuit board on the underside of
the drive near IC5.
