This tutorial can be read simply as a text, however it is intended to be interactive. That is, you should be compiling, modifying and using the programs that are presented herein..

All the programs have been tested using the HiTech C compiler, and we assume that you have a copy of this. In addition, you should have a copy of various updates and header files for the C compiler, which appear on Applix User disks.

You can use either the builtin Applix 1616/OS editor edit, or the $30 Dr Doc editor in
non-document mode. Dr Doc is somewhat more powerful, however as it loads from disk, it is slightly slower to get started. The source code has been edited to suit a tab setting of 5, so invoke your editor with tabs set to a spacing of 5. For example, edit sourcecode.c 5 would let you edit a file called sourcecode.c.

Before you can really use C, there are certain equipment requirements that must be met. You must have a disk co-processor card, and at least one disk drive. If your drives are smaller than 800k, you will probably require two disk drives. We assume you either have 1616/OS Version 4 multitasking, or else have an assign MRD available on your boot disk.

You should make use of the xpath, and the assign commands to set up your boot disk in a form suitable for use with C. This should be done in the autoexec.shell file on your boot disk, as set out below.