3Com 3CCFEM556B User Guide - Page 38

Avoiding Memory Manager Conflicts

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32 CHAPTER 7: INSTALLATION FOR DOS Card Services software, which is usually loaded on computers at the factory, is a software utility that coordinates card access to sockets and system resources, including device drivers, utilities, and application programs. To manage the computer's basic hardware configuration, Card Services automatically sets the I/O base address, interrupt request level, and the CIS memory base address for PC and PCMCIA cards. Verify whether Card Services is installed on your computer by checking the boot screen or looking in the CONFIG.SYS file. For some versions of Card Services, the computer's boot screen may display the following line: Card Services Installed If Card Services is not displayed on the boot screen, check the device section of the CONFIG.SYS file. If Card Services is installed, one device statement will list Card Services, Card Serv, or CS on the device line and usually have a CS or SS in the driver name. Consult your Card Services documentation for more information. If your computer does not have Card Services, or if you choose not to install Card Services, you must use the point enabler to run the LAN+Modem card. The point enabler will not support another PC Card in the same computer. If you are having problems with Card Services or you want to disable it to save memory, you can reboot while pressing [F8]. This skips the startup process that loads Card Services. Avoiding Memory Manager Conflicts If you do not have Card Services, you may experience conflicts with the memory manager installed in your computer. You must configure the memory manager so that it does not interfere with the memory used by the LAN+Modem card. The LAN+Modem card requires 4K for the CIS memory for normal operation (when you are running diagnostics, the PC Card needs 8K of memory). The LAN+Modem card searches the upper memory, finds the 4K block that has been excluded, and uses this area for storing the contents of the CIS memory. For this reason, you do not need to exclude a specific range, as long as it is contiguous.

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32
C
HAPTER
7: I
NSTALLATION
FOR
DOS
Card Services software, which is usually loaded on computers
at the factory, is a software utility that coordinates card access
to sockets and system resources, including device drivers,
utilities, and application programs. To manage the computer’s
basic hardware configuration, Card Services automatically
sets the I/O base address, interrupt request level, and the CIS
memory base address for PC and PCMCIA cards.
Verify whether Card Services is installed on your computer
by checking the boot screen or looking in the CONFIG.SYS
file. For some versions of Card Services, the computer’s
boot screen may display the following line:
Card Services Installed
If Card Services is not displayed on the boot screen, check
the device section of the CONFIG.SYS file. If Card Services is
installed, one device statement will list Card Services, Card
Serv, or CS on the device line and usually have a CS or SS in
the driver name. Consult your Card Services documentation
for more information.
If your computer does not have Card Services, or if you
choose not to install Card Services, you must use the point
enabler to run the LAN+Modem card. The point enabler
will not support another PC Card in the same computer.
If you are having problems with Card Services or you want
to disable it to save memory, you can reboot while pressing
[F8]. This skips the startup process that loads Card Services.
Avoiding Memory Manager Conflicts
If you do not have Card Services, you may experience
conflicts with the memory manager installed in your
computer. You must configure the memory manager so
that it does not interfere with the memory used by the
LAN+Modem card.
The LAN+Modem card requires 4K for the CIS memory for
normal operation (when you are running diagnostics, the
PC Card needs 8K of memory).
The LAN+Modem card searches the upper memory, finds
the 4K block that has been excluded, and uses this area for
storing the contents of the CIS memory. For this reason,
you do not need to exclude a specific range, as long as it is
contiguous.