Troubleshooting - Ricoh A250 Service Manual

4 TROUBLESHOOTING

4.1 SWAPBOX RESOURCE CONFLICT
An ISA device must not share resources (IRQ, I/O address, and memory address)
with another device.
ISA plug and play BIOS automatically assigns necessary resources to ISA boards.
However, this could cause a problem if an ISA board requires specific resources.
The SwapBox requires a specific memory address range to activate card services.
So, if another ISA device or PCI device occupies this memory address range, the
SwapBox and SwapFTL will not work.
4.1.1 IRQ AND I/O ADDRESS
To identify whether an IRQ or I/O address has a conflict with another device, check
the SwapBox properties in the Windows device manager. If you find a conflict,
follow the instructions given by Windows Help.
4.1.2 MEMORY ADDRESS
The SwapBox and card services require a memory Window between 0xC8000 to
0xD3FFF.
The SwapBox properties do not tell you if the memory address is in conflict with
others. To identify whether the memory address is in conflict with another device,
do the following:
1. Choose "Computer" in the Windows device manager, and click "Properties".
2. Choose "Memory" in the "View resources" tab.
3. Check if any other device is using the address range from 0xC8000 to
0xD3FFF. If it is a PCI device, you need to adjust the plug and play BIOS
settings. If it is an ISA device, you need to remove the device from the system.
Conflict with a PCI device
1. Shut down Windows and reboot the computer.
2. Enter BIOS setup during system boot-up.
NOTE: How to enter BIOS setup and BIOS setup options depends on your
system.
3. Find the ISA plug and play settings in the BIOS setup.
4. Adjust the settings so that the BIOS does not allocate the SwapBox memory
range to PCI devices.
Example: Award BIOS
1. Press the "DEL" key during boot-up to gain access to BIOS setup.
2. Choose "PNP AND PCI SETUP" from the main menu.
SM 12-7
TROUBLESHOOTING
A250