×
INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

ISA bus

ISA bus

ISA bus

(OP)
I would like information on how to interface an ISA bus from Qbasic.  I need more digital I/O's then the parallel port.

Thanks

Eric
eric.marshik@medtronic.com

RE: ISA bus

Honestly, I have no idea how to do that.  Assuming you know C, the best place to look is in the Linux kernel source code (25MB). It's got code to interface practically all the standard ports on the PC.
ftp://ftp.linuxberg.com/pub/kernel.org/v2.4/linux-2.4.3.tar.gz
If the ftp site is busy, you can try again later.  You can uncompress it using Winzip or UINX gunzip and tar programs.

If you're pressed for time, I recommend using several COM ports or two parallel ports, since interfacing them from QB is easy. If the data rate doesn't have to be that high, you can multiplex signals on a single wire on the port.

RE: ISA bus

marshe1,

A typical digital hardware course at a respectable university will often have every student design & physically build an ISA card, as well as write software to access it. With this in mind, such a course would allow you to make a card specifically to give you more I/O ports. You can also buy cards to give you extra LPT & COM ports, as well as more sophisticated systems such as SCSI and Ethernet.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members! Already a Member? Login

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close