MikroTik RouterOS™ v2.9

• optimal - the BIOS tries to determine the correct memory settings by itself
• fail-safe - use if you have memory-related errors (generally random, not reproducible errors and
freezes). In this case, minimal timing parametrs are used, so most memory modules will work
reliably
memory-test (yes | no; default: no) - whether to testall the RAM during boot procedure. Regardless
of the choice, hte first megabyte of the RAM will be tested anyway. Enabling this option may cause
longer boot process
pci-backoff (enabled | disabled; default: enabled) - when enabled, external PCI masters can access
system memory even when a CPU cycle has been retried. If you are experiencing uncommon
problems with PCI/PCMCIA/CardBUS interfaces (including RouterBOARD is rebooting or
hanging up once in a while), try to disable it
vga-to-serial (yes | no; default: yes) - whether to map VGA output to the serial console. Should be
enabled if working via serial terminal (gives much more output)
Example
To set high debug level with RAM test:
[admin@MikroTik] system routerboard bios> print
baud-rate: 9600
debug-level: low
boot-delay: 00:00:01
enter-setup-on: any-key
beep-on-boot: yes
boot-device: ide-only
etherboot-timeout: 00:01:00
vga-to-serial: yes
memory-settings: optimal
memory-test: no
cpu-mode: power-save
pci-backoff: enabled
[admin@MikroTik] system routerboard bios> set debug-level=high
[admin@MikroTik] system routerboard bios> print
baud-rate: 9600
debug-level: high
boot-delay: 00:00:01
enter-setup-on: any-key
beep-on-boot: yes
boot-device: ide-only
etherboot-timeout: 00:01:00
vga-to-serial: yes
memory-settings: optimal
memory-test: no
cpu-mode: power-save
pci-backoff: enabled
[admin@MikroTik] system routerboard bios>
System Health Monitoring
Home menu level: /system health
Description
LM87 health controller chip provides some measurments of temperature and voltage on
RouterBOARD 200 series computers. Information becomes available not sooner than 2 minutes
after boot up. It is not available if LM87 chip is not detected successfully. All values are 10 second
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