User`s manual

111
will not boot from DiskOn-
Chip
DiskOnChip is not the only
hard drive in system
disableother hard drive(s) in system or use
M-Systems DUPDATE utility with /
FIRST option.
using wrong DiskOnChip de-
vice (not 32 pin)
change to correct (32 pin) DiskOnChip
Fail Safe Boot ROM enabled Disable Fail Safe Boot
Boot device not set to Hard
disk
run Setup and set boot device to Hard
Drive
erratic operation excessive bus loading reduce number of PC/104 modules in
stack;
remove termination components from bus
signals
power supply noise examine power supply output with oscillo-
scope; glitches below 4.75Vdc will trigger
a reset; add bypass caps
power supply limiting examine power supply output with oscillo-
scope;check for voltage drop below 4.75V
when hard drive or floppy drive starts; add
bypass caps
temperature too high add fan, processor heatsink, or other cool-
ing device(s)
See 486DX100/66 Processor Thermal
Management on page 106.
memory address conflict check for two hardware devices (e.g.
Ethernet, SSD, Arcnet, PCMCIA) trying
to use the same memory address
check for two software devices (e.g.
EMM386, PCMCIA drivers, etc.) trying to
use the same memory addresses
check for hardware and software devices
trying to use the same memory address
check for an address range shadowed (see
Advanced Setup screen) while in use by
another hardware or software device
I/O address conflict check for another module trying to use I/O
addresses reserved for the cpuModule be-
tween 010h and 01Fh
check for two modules (e.g. dataModules,
PCMCIA cards, Ethernet) trying to use the
same I/O addresses
Will not enter Virtual De-
vices mode
correct pins not jumpered jumper pins 7&8 (RI and DTR) of first or
second serial port