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APPENDIX A: RESOURCE ALLOCATIONS
10.
Interrupt Request (IRQ) Lines
10.1
Depending on the PCMCIA software (socket and card services), the Vadem VG-469 PCMCIA
controller may have to be configured to use two hardware interrupts (IRQs) – one for each
PCMCIA slot. Avoid IRQ resource conflicts by assigning unused IRQ lines to the PC/104-
PCMCIA-1. Please read the documents of your PCMCIA software for information about the
assigned interrupts and how to change them if necessary.
It also may be necessary to configure the CPU board from the BIOS setup utility and reserve
the IRQ lines used with the PC/104-PCMCIA-1 for legacy ISA devices.
Upper Memory Areas
10.2
Depending upon the PCMCIA software (socket and card services), two Upper Memory Areas
(one for each PCMCIA slot) will be allocated in the system memory. Make sure that your
PCMCIA software configures the PCMCIA controller for free UMBs to avoid memory conflicts
with other devices. Read the software documents to find out which upper memory areas are
allocated and how to change configuration if necessary.
It also may be necessary to configure the CPU board from the BIOS setup utility to reserve
upper memory blocks used by the PC/104-PCMCIA-1 for legacy ISA devices.
I/O Addresses
10.3
The PC/104-PCMCIA-1 needs one configuration area in the I/O address space to initialize
the controller. The port base address can be selected by onboard hardware jumper JP101.
See the Controller Configuration section of this manual for information. The following table
shows possible I/O address configurations:
I/O Addresses
03E0-03E1h
03E2-03E3h
In addition to the above I/O addresses, the PCMCIA software (socket and card services)
may allocate more I/O addresses for the PCMCIA controller. Avoid I/O conflicts with other
boards in your system. Read the software documents for information about used I/O areas
and how to change configuration if necessary.
PC/104-PCMCIA-1 User's Guide
Use
Configuration Port
Configuration Port
15
Jumper
Comment
1-2
Default configuration
2-3
Alternative Configuration
Appendix A: Resource Allocations
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