Technical information

Advanced Information for PC Cards
DOS
Software Considerations for DOS
Keep in mind the following considerations when using PC Cards:
Using a Software EMS with the PC Card
Warning:
When you update the EMM386
parameter in the CONFIG.SYS file
using RAMSETUP, set the same
address range as the one
specified by the “/MA=”
parameter of DICRMU01.SYS as
“Adapter”.
To use a software EMS without the Dock I or Dock II:
During the installation of the PCMCIA device driver, your system
automatically sets up the memory space so that you can use
EMS with a PC Card.
To use a software EMS with an adapter card in the Dock I or
Dock II:
You can specify a memory area in your CONFIG.SYS file so
that the memory areas for the PC Card, adapter, and EMS do
not conflict with one another. To determine the
required-memory space of the PC Card, refer to the manual that
came with the PC Card. You should allocate at least 34KB of
memory to the DOS Card Services (IBMDOSCS.SYS).
The hardware interrupt level of the PC Card and the adapter
must be assigned exclusively. To avoid a conflict, use the
Resource Map Utility (DICRMU01.SYS) with the following
parameters:
DEVICE= [drive:] [path] DICRMU 1.SYS
[[/MA=mmmm-mmmm[,mmmm]] [/IX=IRQ level[,IRQ level]]]
/MA= The segment address range that is allocated to the
memory window for a PC Card.
mmmm-mmmm
The address range of the PC Card. The range can be
specified from X'C000' to X'DFFF'. One or more
address ranges can be specified with a comma (,) to
separate the address ranges.
/IX=IRQ level
The interrupt request level that cannot be used by the
PC Card. You can specify levels 3, 4, 5, 7, 9, 10, 11,
12, 14, and 15. One or more of these levels can be
specified with a single DEVICE command.
Appendix B. Advanced Information for PC Cards 235