lm(4) - NetBSD Manual Pages

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LM(4)                   NetBSD Kernel Interfaces Manual                  LM(4)

lm -- National Semiconductor LM78, LM79 and compatible hardware monitors
lm0 at isa? port 0x290
The lm driver provides support for the National Semiconductor LM series hardware monitors and register compatible chips to be used with the envsys(4) API. Most supported devices possess 11 sensors: Sensor Units Typical Use IN0 uV DC Core voltage IN1 uV DC unknown IN2 uV DC +3.3V IN3 uV DC +5V IN4 uV DC +12V IN5 uV DC -12V IN6 uV DC -5V Temp uK Motherboard Temperature Fan0 RPM Fan Fan1 RPM Chassis Fan Fan2 RPM Fan for some devices (most Winbond devices) sensor names and numbers will be different. Sensor names as well as nominal RPMs for fans 0 and 1 may be changed through the ENVSYS_STREINFO ioctl(2). Due to hardware limitations, fresh sensor data is only available every 1.5 seconds.
Chips supported by the lm driver include: National Semiconductor LM78, LM78-J, LM79 and LM81. Winbond W83627HF, W83627THF, W83627EHF, W83627DHG, W83637HF, W83697HF, W83781D, W83782D, W83783S, W83791D, W83791SD and W83792D. ASUS AS99127F.
envsys(4), envstat(8)
The lm device appeared in NetBSD 1.5.
Interrupt support is unimplemented. There are currently no known pnpbios IDs assigned to LM chips. NetBSD 4.0 March 11, 2007 NetBSD 4.0
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