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OS/2 Shareware BBS: 4 Drivers
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04-Drivers.zip
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adi2drv.zip
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DOSPARM.TXT
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1994-10-14
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Command line parameters for ADI2Cxxx.SYS DOS device drivers
They can be entered in any order, any case on the
device=adi2cxxx.sys line in config.sys
There must be spaces between parameters, but do not include
spaces inside parameters (i.e. c = s will not work).
initonly tells driver to initialize ADI2 registers
only. No device driver code remains resident
ROM BIOS then handles all disk transfers
noinit tells driver to NOT initialize ADI2, but
driver will stay resident, and if appropriate,
perform 32-bit I/O and read/write multiple
io16 | io32 force device driver to perform 16-bit I/O or
32-bit I/O. If your CPU has a 16 bit external
bus (i.e. 486SLC ) 32-bit I/O does not work, and
forcing it will cause your system to hang
floppy sets the ADI2 pin 'r3f7' as and input, and
makes I/O reads to 3f7 into local bus cycles.
(assumes that pin 34 of the floppy disk cable is
connected to r3f7.)
c=s, d=s force drive c or d to single mode read/writes
c=m, d-m force drive c or d to multiple mode read/writes
(note: if your drive doesn't support multiple mode,
your system will hang)
c=3-, d=3- suppress the use of advanced timing modes 3 and
above for drive c and d
c=lba- supress LBA address mode for drive c or d. NOTE: the
d=lba- ADI2 driver does not yet support the BIOS called
needed to partition and format a hard disk, so LBA
mode offers no performance or feature benefits
(as of rev 1.40)
speed=50 command line overrides that tell the driver to use
speed=40 the inidicated value for the system clock speed rather
speed=33 than the value determined by the internal speed
speed=25 measurement routine. Used when the driver reports
speed=20 that it cannot determine the clock speed and asks you
speed=16 to turn on the 'turbo' switch, when it is already on.
(incorrectly setting this to a value that is too low
can cause LOSS OF DATA on your hard disk!!!!
i.e. if you have a 50 MHz system <real 50 MHz, not 25
MHz DX2 > and you set this to speed=25, your system
will most likely hang, but may _just_ cause data
corruption.
********* use with care !!!! ***********
[the following parameters were added with revision 1.49 of the DOS driver]
alt_ide=off tell driver to not attempt to autodetect system BIOS
control of alternate IDE port (17x, 37x). Normal mode
for driver uses number of BIOS disks to decide if BIOS
has supported alt IDE. If disks on the alternate (or
secondary) IDE port do not work right after loading
this driver, try this parm. If they cannot be
accessed without this driver being loaded, then this
is probably not the problem
alt_ide=on Force driver to control disks on alternate (or
secondary) IDE port at 17x and 37x. This parm will be
needed if a SCSI card adds 'BIOS supported' hard
disks, which will fool driver into not supporting alt
IDE adapter. If you have hard disk attached to
secondary IDE adapter and you cannot access them
try this parameter
edc
Cirrus Logic
10/14/94