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README.TXT
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1995-01-18
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SWXCR BIOS :
The BIOS provides access for up to 8 logical drives per SWXCR, under
DOS ver 5.0 and above. The total DOS partition size is limited to
1024 cylinders (BIOS limit) and hence it does not make sense to have
a system drive of more than 2048 MB, if it is used only for DOS. The
maximum size of any DOS partition cannot be more than 1023 cylinders
or 2046MB.
DOS Driver :
The BIOS on the SWXCR is usable only under the real mode of the
operating system. In order to use the SWXCR under memory managers
like Windows, QEMM etc., a DOS driver needs to be used. The
DOS driver, SWXCRWIN.SYS supports only disk drives. The total DOS
partition size on the SWXCR is limited to 2048 MB, even when the
DOS driver is used.
ASPI Driver :
If non disk devices are connected, use the ASPI driver ASPIDAC.SYS
under DOS, to access these devices. Note that the ASPI driver works
only WITHOUT any memory managers like Windows 3.1, QEMM etc.
The ASPIDAC.SYS works in conjunction with the DOS driver, SWXCRWIN.SYS.
CDROM Driver :
Also a CDROM driver DAFCDA.SYS is included, to allow CDROM access under
DOS, using a MSCDEX driver. The DAFCDA.SYS works in conjunction with the
ASPI driver, ASPIDAC.SYS.
Installation :
If SWXCR is the only disk controller in the system, use DOS
"fdisk" to create a DOS partition and use DOS "format c: /s "
to high level format the DOS partition. Boot from the SWXCR
disk.
Copy the driver file, SWXCRWIN.SYS from the SWXCR DOS driver
diskette to the root directory of the boot disk. Optionally,
copy the driver file ASPIDAC.SYS (ASPI driver) and DAFCDA.SYS
(CDROM driver) to the root directory of the boot disk.
The SWXCR DOS, ASPI and CDROM drivers are installed with the help
of CONFIG.SYS.
The following lines are put in the CONFIG.SYS file to install the
SWXCR DOS, ASPI and CDROM driver.
DEVICE={DRIVE}:SWXCRWIN.SYS
DEVICE={DRIVE}:ASPIDAC.SYS
DEVICE={DRIVE}:DAFCDA.SYS
In order to use the CDROM as a logical drive under DOS, the autoexec.bat
file needs to load the MSCDEX driver as follows:
{DRIVE}:MSCDEX /V /M:10 /D:MSCD001
Note : MSCDEX is available in DOS 6.0 or supplied by CDROM
manufacturers.
All the above statements need to be put before any line loading the
memory manager, like himem.sys, qemm.sys, emm386.exe etc.
SWXCRWIN.SYS, ASPIDAC.SYS and DAFCDA.SYS should always be installed in
real memory and never in high, expanded or extended memory.
If using another disk controller with SWXCR, make sure all the
drivers associated with the other disk controller are loaded before
the SWXCR DOS driver.
Known Bugs/Limitations :
ASPIDAC.SYS and DAFCDA.SYS should not be used in Windows 3.x, QEMM
etc..
None of these drivers can be loaded in upper or high memory.
ASPIDAC.SYS will behave unpredicatbly, under an "installation
abort" condition or on a controller that has no drives connected to
it. Do not use ASPIDAC.SYS when installation abort error is reported by
BIOS.