International Business Machines Corporation 35H3636 Manual De Usuario
Chapter 6. Point Enablers and Card Services
Computers that support PC Cards have one or more PC Card slots, known as A, B,
C... or 1, 2, 3.... The slots are controlled by integrated circuit chips such as the
TI1130, TI1131, and TI1250 (Cardbus) controller chip sets, and many more.
C... or 1, 2, 3.... The slots are controlled by integrated circuit chips such as the
TI1130, TI1131, and TI1250 (Cardbus) controller chip sets, and many more.
In order for communications programs to use a PC Card, interface software of
some sort is needed. At present, several interfaces are available and each has its
advantages and disadvantages. The two most important interfaces are those
provided by Point Connectivity Enablers and Card Services; both are available
under DOS, but OS/2 requires you to use Card Services.
some sort is needed. At present, several interfaces are available and each has its
advantages and disadvantages. The two most important interfaces are those
provided by Point Connectivity Enablers and Card Services; both are available
under DOS, but OS/2 requires you to use Card Services.
If you decide to use Card Services, you must install and enable it before running
LANAID.
LANAID.
A third type of interface is Socket Services.
Relationship Between the Interfaces
The following diagram shows how the interfaces relate to each other:
Credit Card Software Configurations
LAN Device
Driver
LAN Device
Driver
Card Services
Enabled
Point Connectivity
Enabled
Card Services
Enabler
Point
Enabler
Card
Services
Socket
Services
Socket
Controller
Socket
Controller
LAN Device
Driver
LAN Device
Driver
PCMCIA 2.1
Socket Services
Enabled
Card
Services
Socket
Services
Enabler
Socket
Services
Socket
Services
Socket
Controller
Socket
Controller
Point Connectivity Enablers
These are small programs that provide an interface directly to the PC Card
controller; therefore, they must be written to support a particular type of controller.
controller; therefore, they must be written to support a particular type of controller.
© Copyright IBM Corp. 1997, 1999
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