How to access an absolute address through Python?

[volcano]

Can it be done, and if yes - how?

 

[=?ISO-8859-1?Q?Ma=EBl_Benjamin_Mettler?=]

Can it be done, and if yes - how?

Define address. Are you talking about URLs? File paths? Postal
addresses? Memory addresses? Whatever addresses?
I'm afraid the people on this list can't read your thoughts...

 

[volcano]

Define address. Are you talking about URLs? File paths? Postal
addresses? Memory addresses? Whatever addresses?
I'm afraid the people on this list can't read your thoughts...

I presumed that "absolute" address somehow qualifies my question. If
it is not - I was talking about physical computer memory, on PC - to
be more specific.

 

[Marc 'BlackJack' Rintsch]

I presumed that "absolute" address somehow qualifies my question. If
it is not - I was talking about physical computer memory, on PC - to
be more specific.

In pure Python it's not possible and even in C it might be difficult to
get an absolute *physical* memory address unless you run DOS. Modern
operating systems tend to use some virtualisation of memory.

What's your goal? What do you expect at the memory address you want to
access?

Ciao,
Marc 'BlackJack' Rintsch

 

[volcano]

In pure Python it's not possible and even in C it might be difficult to
get an absolute *physical* memory address unless you run DOS. Modern
operating systems tend to use some virtualisation of memory.

What's your goal? What do you expect at the memory address you want to
access?

Ciao,
Marc 'BlackJack' Rintsch

My goal is to sync program with external equipment through a register
defined as an absolute physical address. I know how to do it from C -
was curious if it may be done from Python. Can it be done?

Thanks, Mark

 

[Fred of UrlBit.Us]

My goal is to sync program with external equipment through a register
defined as an absolute physical address. I know how to do it from C -
was curious if it may be done from Python. Can it be done?

Thanks, Mark

Your best bet will be to create a C library callable from Python to do it
for you. There may be such a beast in existence already, but it should not
be hard at all to do, given the simplicity of the requirements.

 

[Steve Holden]

My goal is to sync program with external equipment through a register
defined as an absolute physical address. I know how to do it from C -
was curious if it may be done from Python. Can it be done?

No. You'd have to use a compiled extension.

regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://del.icio.us/steve.holden
Blog of Note: http://holdenweb.blogspot.com
See you at PyCon? http://us.pycon.org/TX2007

 

[volcano]

No. You'd have to use a compiled extension.

regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://del.icio.us/steve.holden
Blog of Note: http://holdenweb.blogspot.com
See you at PyCon? http://us.pycon.org/TX2007

Steve, Fred, thank you. This is exactly what I have done, though I did
hope for shortcut. Life is tough!

 

[Paul Rubin]

No. You'd have to use a compiled extension.

Well, you don't necessarily have to deal with the C API or ctypes; it
may be enough to invoke an external program that accesses the
necessary memory address.

 

[Grant Edwards]

Can it be done,
Yes.

and if yes - how?

/proc/kmem

 

[Dennis Lee Bieber]

My goal is to sync program with external equipment through a register
defined as an absolute physical address. I know how to do it from C -
was curious if it may be done from Python. Can it be done?

On Windows you'd have to create an OS-level driver module that runs
with the needed privileges (just take a look at how many utilities are
out there to grant user programs access to physical serial and parallel
ports)
--
Wulfraed Dennis Lee Bieber KD6MOG
(e-mail address removed) (e-mail address removed)
HTTP://wlfraed.home.netcom.com/
(Bestiaria Support Staff: (e-mail address removed))
HTTP://www.bestiaria.com/