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.TH ISASET 8 "April 2011"
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isaset \- set ISA registers
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#for flat address space
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isaset is a small helper program to set registers visible through the ISA
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Enable flat address space mode.
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Disable interactive mode. By default, isaset will wait for a confirmation
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from the user before messing with the ISA bus. When this flag is used, it
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will perform the operation directly. This is mainly meant to be used in
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Perform a 16-bit write.
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Perform a 32-bit write.
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.SH OPTIONS (I2C-like access mode)
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Four options must be provided to isaset. \fIaddrreg\fR contains the
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ISA address of the address register for the chip to probe; \fIdatareg\fR
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contains the address of the data register. Both addresses are integers between
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0x0000 and 0x3FFF. Usually, if the chip's base address is 0x0nn0, the
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address register is at 0x0nn5 and the data register is at 0x0nn6. The most
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common base address for hardware monitoring chips is 0x0290.
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For Super-I/O chips, address register is typically at 0x2E with data
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The \fIaddress\fR and \fIvalue\fR parameters are two integers between
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0x00 and 0xFF. isaset will write value \fIvalue\fR to address \fIaddress\fR.
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An optional \fImask\fR can be provided as a fifth parameter, preserving
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unmasked bits at the written location.
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.SH OPTIONS (flat address space mode)
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In flat mode, two parameters must
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be provided. \fIaddress\fR contains the ISA address of the register to
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write to; it is an integer between 0x0000 and 0xFFFF. Basically, it is
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the sum of the chip's base address and the chip register's address. isaset
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will write value \fIvalue\fR at this address.
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An optional \fImask\fR can be provided as a third parameter, preserving
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unmasked bits at the written location.
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Poking around in ISA data space is extremely dangerous.
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Running isaset with random parameters can cause system
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crashes, data loss, and worse! Be extremely careful when using
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Mark D. Studebaker, and the lm_sensors group
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(https://hwmon.wiki.kernel.org/lm_sensors)
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This manual page was shamelessly ripped from the i2cset and isadump manual
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pages by Jean Delvare.
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prog/dump/isaset.8
