How to directly access ISA bus registers? (Solved)

[citybook]

Hi all,
I have a Pentium P3 with ISA bus that has a 24 line IO card - it is accessed by a Clipper application that talks directly to the card ports in memory space - like 110hex

I would like to re-do this thing on Puppy Lucid using gcc - but as far as I can see we have obeyed the Gods of Redmond and removed the inport and outport functions from the C Libraries ?

Two questions - does anyone suggest a workaround to give a program this sort of access to memory space - and is there a function listing for the Puppy C Libraries ?

Thanks in advance,
Bob.

[muggins]

Have you lloked at Linux I/O port programming mini-HOWTO?

[citybook]

Thanks Muggins - as you would have seen in your article they talk about the inport family of routines as the best way to do it.

As you would have read in my OP these routines seem to be missing from the Puppy implementation of gcc ?

Or do you know which library they are in ?

Cheers,
Bob

[Flash]

Citybook, it was I who edited the title of your first post. The idea is to grab the interest of someone who knows the answer. If I got it wrong, feel free to edit it for accuracy.

I believe Puppy uses a cut-down version of Bash. Could that be the cause of your problem? I'm not a programmer so I'm not familiar with it.

[citybook]

Hi Flash, no problem with changing the title - yours is probably better.

Don't know about the Bash thing - I am new to Puppy - you could be right.
Would welcome input from folks who know about this.

Cheers,
Bob.

[amigo]

I'd look first at the old isapnptools to see if they contain anything useful.
The contents of ISA PnP registers are readable under:
/proc/bus/isapnp
Here's the homepage of isapnptools:
http://www.roestock.demon.co.uk/isapnptools/

You may find something useful in the Linux serial howto:
http://linux.about.com/od/srl_howto/a/hwtsrl_idx.htm

Ahh, just found this, Interfacing with the ISA bus:
http://linuxgazette.net/124/dutta.html

[Ibidem]

Thanks Muggins - as you would have seen in your article they talk about the inport family of routines as the best way to do it.

As you would have read in my OP these routines seem to be missing from the Puppy implementation of gcc ?

Or do you know which library they are in ?

inb/outb seem to have moved from asm/io.h to sys/io.h when using newer versions of the kernel headers.


Bash does not have any relevance whatsoever.

[citybook]

Thanks Amigo - I'll save those links.

Ibidem, that's what I was looking for - I included sys/io and it all works.

Do you by any chance have a link to a Puppy .lib function list ?

Thanks to all who answered,
cheers,
Bob.

[Flash]

Citybook, so you are able to access the bus registers now?

[Ibidem]

Ibidem, that's what I was looking for - I included sys/io and it all works.

Do you by any chance have a link to a Puppy .lib function list ?

The official list would be the headers
You can find all functions, though not the parameters, via

Code: Select all

nm /lib/libc.so.6

But that won't help much, unless you're going to look up each function or have the manpages stored somewhere.

Glad it works now.

[citybook]

Yes Flash, I can do it now thank-you.

Thanks Ibidem - I will try that later - maybe work up a listing of my own.

Cheers,
Bob.