Jp17: Memory Clock Select; Jp19: Cpu Select - TMC MI7WBM SERIES User Manual

4.7 JP17: Memory Clock Select

For MI7WBM Series Ver. 1.00
The MI7WBM comes with the JP17 memory clock select jumper. In case
you are using 64MB NEC or LGS SDRAM module and the system does
not boot, set JP17 to SHORT to delay the memory clock.
For MI7WBM Series Ver. 1.20
1. When only one DIMM slot is used, leave JP17 OPEN
2. When 2 DIMM slots are used, set JP17 to SHORT.
3. When using NEC DIMM modules, regardless one or two DIMM slots
are used, JP17 should be set to SHORT.
4. When using CPU bus speed of 66MHz, leave JP17 OPEN.
IMPORTANT NOTES:
1. If the memory module you are using is not included in our test report
or is an 'unknown' brand, set JP17 to OPEN first. (It is recommended to
use PC-100 compatible memory modules.) If the system does not boot,
then set JP17 to short.
2. Regardless of the brand of memory module you are using, they must be
PC-100 compatible modules.
3. In the BIOS setup on page 40, there is an option for the SDRAM cycle
time. Its setting must meet the specification of your SDRAM module. Or
else, the system might become unstable.
4. If your CPU uses 100MHz bus speed, JP17 should be SHORT.

4.8 JP19: CPU Select

The JP19 2-pin jumper is used in conjunction with the processor installed
on the motherboard. When the processor is an Intel Coppermine/Celeron
processor with 128K cache, JP19 should be OPEN. For an Intel
Coppermine processor
CLOSED/SHORT.
JP19 Function
Coppermine/
Celeron with
128K cache
OPEN
MI7WBM User's Manual
Chapter 4 Configuring the Motherboard
with 256K cache, JP19
JP19 Function
Coppermine
with 256K
SHORT
should be
cache
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