A note about the future of ecsoft2.org

ecsoft2.org runs on software (Drupal 7 and PHP 7.4) that reached its end of life years ago and no longer receives security updates. Keeping the site online safely is getting harder.

Giving it a future means migrating it to a current platform — and that is only worth doing if people still use it and want to help keep it alive.

If you care about ecsoft2.org, as a user, a contributor, or someone willing to lend a hand, please ggambatiscali [dot] it (get in touch) by January 31, 2027.

If no one comes forward by then, the site will be turned into a read-only archive, so that its content stays available.

OS/2 Technical Library Presentation Driver Reference

Full text of reference for the development of device drivers under IBM OS/2 2.0, the documentation provided with the IBM Developer Connection Device Driver Kit for OS/2 2.0 and above.
This text is intended to programmers interested in the development of system drivers for devices (16 and 32 bit), for IBM OS/2 2.0 and IBM OS/2 Warp 3.0 and above.

On 06/01/2015, IBM agreed to the full publication of the content under Attribution-ShareAlike 3.0 license. Thanks to IBM and to Martin Iturbide for mediating!

Please note that Open Watcom compiler provides excellent support for the development of device drivers on OS/2. It is also suggested reading the book "Writing OS/2 Warp Device Drivers in C. Third Edition" by Steve Mastrianni.