6-2
C
HAPTER
6: T
ROUBLESHOOTING
Using the Diagnostic Program
You can troubleshoot the 3C359 NIC configuration and
test for physical board problems by running the DOS
Configuration and Diagnostic Program.
Configuration instructions are described in Appendix B.
The diagnostic part of the program tests the 3C359 NIC,
not the network. However, a lobe cable must be connected
from the 3C359 NIC to a retiming concentrator or
MAU for all tests. A lobe cable is the section of cable
that attaches a ring station or network device to a MAU
or wiring hub.
The diagnostic program does not function properly if the
3C359 NIC drivers are already installed and running in
memory. You must bypass the drivers by performing a clean
DOS boot before you run the diagnostic program. Use a
DOS diskette if you are running a version of DOS earlier
than DOS 6.x.
DOS Diagnostic Tests
The diagnostics test physical components, connectors, and
circuitry of the 3C359 NIC, as follows.
Register Write/Read Test
This test verifies accurate writing and reading of the 3C359
NIC’s control registers.
Local RAM Write/Read Test
This test verifies that the PC can correctly access the total
64 KB of available local RAM.
Timer Test
This test verifies the 3C359 NIC’s timer operations by
comparing the 3C359 NIC’s timers to the PC’s timer.
Book Page 2 Saturday, November 1, 1997 3:13 PM
