Need help: "writing" to simple ISA device

Question

Hi,
We have an ISA card that has 19 8-bit analog outputs. It is an extremely
simple card. To use it you simply write to a particular address for one
of the analog output channels. The card itself consists of simple 74'
logic
and some DAC IC's.
The vendor of this device (it is part of a deformable mirror system
from www.OKOtech.com) even provided us with a C-program that
demonstrates
how to do this.
The problem is that the program is designed to be used in DOS, and we
use
windows NT, moreover we ideally want to use it in labview. Although the
vendors
have made a great piece of optics, they are not interested in (or don't
understand) the concept of making the device a usable product.
So now I am asking for some ad
vice or guidance in how to solve this
problem. The
following is the header of the essential part of the code; the part that
needs to
be translated. It is designed to be compiled by borland C++ 2.0. I would
like to
be able to do the following in labview or in C on a windows NT machine.
#include
#include
#include
#include
#include
/* board address: */
int base=0x300;
/* The thing I need to translate */
void set_dac( int some_voltage ) {
int some_address = 20;
outportb( base + some_address, some_voltage );
delay (1);
It appears the the only thing I need to find the equivalent of is
"outportb"
which is defined in dos.h in the Borland compiler. I think it is known
as
"outp" in the old microsoft C compiler.
Is there a way to do this in Labview or in an up-to-date compiler? Can
it even
be done in windows NT? Will it be a colossal hassle to do correctly?
Thanks,
-A.

Answer 1

This is a repeat of the previous message: Sorry about
the line breaks!!
Hi,
We have an ISA card that has 19 8-bit analog outputs.
It is an extremely simple card. To use it you simply
write to a particular address for one of the analog
output channels. The card itself consists of simple 74'
logic and some DAC IC's.
The vendor of this device (it is part of a deformable
mirror system from www.OKOtech.com) even provided us
with a C-program that demonstrates how to do this.
The problem is that the program is designed to be used
in DOS, and we use windows NT, moreover we ideally want
to use it in labview. Although the vendors have made a
great piece of optics, they are not interested in (or don't
understand) the concept of making the de
vice a usable product.
So now I am asking for some advice or guidance in how to
solve this problem. The following is the header of the
essential part of the code; the part that needs to be translated.
It is designed to be compiled by borland C++ 2.0. I would like
to be able to do the following in labview or in C on a windows
NT machine.
#include
#include
#include
#include
#include
/* board address: */
int base=0x300;
/* The thing I need to translate */
void set_dac( int some_voltage ) {
int some_address = 20;
outportb( base + some_address, some_voltage );
delay (1);
It appears the the only thing I need to find the equivalent
of is "outportb" which is defined in dos.h in the Borland
compiler. I think it is known as "outp" in the old microsoft
C compiler.
Is there a way to do this in Labview or in an up-to-date
compiler? Can it even be done in windows NT? Will it be a
colossal hassle to do correctly?
Thanks,
-A.