diff --git a/prog/dump/isadump.8 b/prog/dump/isadump.8 index cc85efd6..9bc4406f 100644 --- a/prog/dump/isadump.8 +++ b/prog/dump/isadump.8 @@ -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 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.