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Document the new flat address options.

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git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2476 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare
2004-04-25 13:30:21 +00:00
parent ad91c909d8
commit 0738cd0915
1 changed files with 44 additions and 14 deletions
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58
prog/dump/isadump.8
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@@ -1,4 +1,4 @@
.TH ISADUMP 8 "March 2004"
.TH ISADUMP 8 "April 2004"
.SH NAME
isadump \- examine ISA registers
@@ -11,13 +11,14 @@ isadump \- examine ISA registers
.br
.B isadump
.BI "-f " address
.RI [ "range " [ "bank " [ bankreg ]]]
(for flat address space)
.SH DESCRIPTION
isadump is a small helper program to examine registers visible through the ISA
bus. It is intended to probe any chip that lives on the ISA bus working with an
address register and a data register (I\u2\dC-like access) or a flat 256 bytes
range.
address register and a data register (I\u2\dC-like access) or a flat range (of up
to 256 bytes).
.SH OPTIONS (I\u2\dC-like access mode)
At least two options must be provided to isadump. \fIaddrreg\fR contains the
@@ -27,16 +28,44 @@ contains the address of the data register. Both addresses are integers between
address register is at 0x0nn5 and the data register is at 0x0nn6. The most
common base address for hardware monitoring chips is 0x0290.
.PP
The \fIbank\fR and \fIbankreg\fR parameters are useful on the W83781D and
similar chips (at the time of writing, all Winbond and Asus chips).
\fIbank\fR is an integer between 0 and 7, and \fIbankreg\fR is an integer
between 0x00 and 0xFF (default value: 0x4E). The W83781D data sheet has more
information on bank selection.
For Super-I/O chips, address register is typically at 0x2E with data
register at 0x2F.
.PP
The \fIbank\fR and \fIbankreg\fR parameters are useful on the Winbond chips
as well as on Super-I/O chips.
\fIbank\fR is an integer between 0 and 15, and \fIbankreg\fR is an integer
between 0x00 and 0xFF (default value: 0x4E for Winbond chips, 0x07
for Super-I/O chips). The W83781D datasheet has more information on bank
selection.
.SH OPTIONS (flat address space mode)
In flat mode (triggered by the \fB-f\fR flag), only one parameter must be
provided. \fIaddress\fR contains the ISA address of the address register
for the chip to probe; it is an integer between 0x0000 and 0xFFFF.
In flat mode (triggered by the \fB-f\fR flag), only one parameter is
mandatory. \fIaddress\fR contains the ISA address of the chip to probe;
it is an integer between 0x0000 and 0xFFFF.
If provided, \fIrange\fR is how many bytes should be read (must be a
multiple of 16). If the range isn't provided, it defaults to 256 bytes
and the address is forcibly aligned on a 256-byte boundary.
.PP
The \fIbank\fR and \fIbankreg\fR parameters are useful on the National
Semiconductor PC87365 and PC87366 Super-I/O chips.
\fIbank\fR is an integer between 0 and 15, and \fIbankreg\fR is an integer
between 0x00 and 0xFF (default value: 0x09; must fit in the specified
range). See the PC87365 datasheet for more information on bank selection.
.SH NOTES
If no bank is specified, no bank change operation is performed.
.PP
If a bank is specified, the original value is restored before isadump exits.
.PP
Dumping Super-I/O chips is typically a two-step process. First, you will have
to access the main Super-I/O address using a command like:
isadump 0x2e 0x2f 0x09.
This will select logical device 9 (correct value depend on the chip). At 0x60
you will find the logical device address word, for example "ec c0".
Then you can use a command like:
isadump -f 0xecc0 16.
This will dump the logical device registers. The correct range depends on
the chip.
.SH WARNING
Poking around in ISA data space is extremely dangerous.
@@ -52,7 +81,8 @@ i2cdump(8)
.SH AUTHOR
Frodo Looijaard, Mark D. Studebaker, and the lm_sensors group
http://www.lm-sensors.nu/
(http://www.lm-sensors.nu/)
.PP
This manual page was originally written by David Z Maze <dmaze@debian.org> for
the Debian GNU/Linux system. It was then reviewed by the lm_sensors team and
is now part of the lm_sensors source distribution.
the Debian GNU/Linux system. It was then reviewed and augmented by the lm_sensors
team and is now part of the lm_sensors source distribution.