Home/ Questions/Q 7850273
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-02T18:47:47+00:00

I’ve had to use a very old library written some twenty years ago. I

  • 0

I’ve had to use a very old library written some twenty years ago. I get it to compile almost completely, except for one part that uses a REGS union. From the Google searching I’ve done, REGS is a part of interrupt handling in the DOS.h file. Well, looking at the modern version of DOS.h, one does not see any REGS definition.

Some posts around the Internet said something about it being unique to either the Borland or Turbo compilers, but this code was written to work under many different compilers.

Any ideas what I should do? Is an old DOS.h file floating around that might work?

Using: Visual Studio 2010, compiling from command line.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Pretty much the only thing you can do is figure out what they’re doing with the REGS, and do (as close as you can) to the same thing at that higher level. In most cases, REGS were used to invoke DOS functions, most of which have equivalents that can be invoked as normal functions under Windows. Others were to use BIOS functions, which (again) mostly have functions to accomplish the same.

    Without knowing what was being accomplished with the REGS, however, it’s impossible to guess what the replacement would/will be.

    • 0