Cirrus Logic CRYSTAL LAN CS890, Technical Reference Manual, Page: 68 / 80

68 AN83REV1
CS8900 Technical Reference Manual
NOTE: If memory mode is selected,
then the user must manually exclude
use of that block by the system. This
is accomplished by editing the
CONFIG.SYS file. For example, if
the card uses memory in the address
range D000h to D0FFh, you would
exclude this range from Windows by
adding the following line to the
CONFIG.SYS file:
device=c:\windows\emm386.exe x=d000-
d0ff
•
Boot PROM describes the memory
base address of the Boot PROM , if
present.
•
Connector type describes the type of
Ethernet media: 10BASE-T, AUI or
10BASE-2.
OS Optimization describes the perform-
ance option selected:
a) DOS - Maximize Ethernet through-
put, with no attempt to minimize CPU
utilization or number of interrupts.
b) Windows/Server - Selects a configu-
ration which minimizes the number of
interrupts generated by the CS8900,
with no attempt to maximize Ethernet
throughput
4.3.1.3 Diagnostics/Self Test Screen
This function tests the adapter based on
the settings that the user has assigned,
either from Auto Configuration or Man-
ual Configuration screen. System re-
sources availability can be checked by
running this test. Adjustments to the
setup should be manually made if the
diagnostics fail.
Failure upon test items such as I/O, IRQ,
DMA, and MEM indicate the conflict
with other devices on the bus. In this
case, the user is prompted to use Manual
Configuration screen to eliminate those
conflicts.
The tests are run once when the function
is entered. The user can then chose to
repeat the test by selecting REPEAT.
The tests run are the following:
•
The IO Register Read/Write test in-
sures that the CS8900 can be ac-
cessed in IO mode, and that the IO
base address is correct. If this test
fails, the IO base address should be
changed.
•
The EEPROM test insures that the
EEPROM can be read. If the EEPROM
can not be read, then the card should be
removed from the system.
•
The Chip RAM test insures that the
4k byte memory internal to the
CS8900 is working properly. If both
this test, and the shared memory test
fail, then the memory base address
should be modified and this test run
again. If this test fails but the shared
memory test passes, then card must
be repaired or replaced.
•
The Shared Memory test insures the
memory base address doesn’t conflict
with other memory assignments in the
system. if this test fails, the memory
base address must be changed.