gene@uokmax.uucp (Gene E. Johannsen) (08/24/90)
As we all know, in order to have the computer do something when a mouse button is pressed, a vector has to be set up by using an interrupt. This vector has to be in the es:dx registers when this interrupt is called. How in a C program can I make these registers point to a C routine? gene@uokmax.ecn.uoknor.edu
joe@proto.COM (Joe Huffman) (08/24/90)
In article <1990Aug23.215002.8771@uokmax.uucp>, gene@uokmax.uucp (Gene E. Johannsen) writes: > This vector has to be in the es:dx registers when this interrupt is called. > How in a C program can I make these registers point to a C routine? You can't do it without a helper function. Zortech has the msm_XXXX family of functions. One of which will install your interrupt. You could also do it with the int86x() function. Be careful though. In this case it can't be a standard C function. The return must be an IRET, not a RET. the msm_ function puts a 'wrapper' around your 'C' function with an IRET in the proper place... Some other compilers have a special interrupt declared function type. -- joe@proto.com uunet!proto!joe FAX: 208-263-8772