find value of a memory location

[ankt90138]

hello sir;

i just wanna know in this command

sudo setpci -s 00:02.0 F4.B=40

if i want to read value of location (00:02.0 F4.B)before assigning a new value..

How could i do this??

[spjackson]

man setpci

There are two kinds of operations: reads and writes. To read a regis‐
ter, just specify its name. Writes have the form name=value...

[ankt90138]

doesnt help much..

[spjackson]

The man page for setpci tells you that if the command to change a value to 40 is

sudo setpci -s 00:02.0 F4.B=40

Then the command to read the current value is

sudo setpci -s 00:02.0 F4.B

If this "doesn't help much" then you will need to explain more clearly what you want to do.

[conradin]

lol I found the man page to not be too easy to read. searching "/read" in vim gave me nothing useful.
Anyhow i found this thread helpful!