Remote I/O System User Guide

RIO Remote I/O System User Guide
Windows NT troubleshooting
Page 309
Clashing memory address
Clashing memory addresses can occur on PCI and ISA bus machines.
PCI machines On PCI machines, clashes are possible when the memory address for an ISA card has not
been reserved in the system. Use the PCI BIOS setup program to reserve ISA memory
resources and ensure that the physical address of the ISA card matches this setting.
ISA machines On ISA machines, if you suspect that installation has failed due to a clashing memory
address, switch off your machine, remove the card, reconfigure the settings using the RIO
Configuration program, reset the rotary switches on the card, re-insert the card and reboot.
You do not need to re-install the RIO software.
RIO Memory
requirements
The RIO host card requires a full, non-cached, 64K memory segment starting on a 64K
boundary. The default address is 0D0000 but address space below a megabyte is usually
tight.
The segments at 0C0000 and 0E0000 may be available, but if you have less than 16Mb of
extended memory installed, we recommend that you install at a high address. You can use
any non-cached 64Kb memory segment above extended memory (For example, F00000,
F10000, or F20000).
If you are unable to find a free memory segment, you will have to reconfigure another device
to make room for your RIO card.