To build the executable, you'll need an ANSI-compliant C compiler and library,
an assembler for the DOS version (for the very low-level routines) and a
linker. I used Borland C++ 4.52, the shareware assembler A86 and Borland's
TLINK 7.00. The makefile is set up for these, so some minor modifications may
be needed if you have different tools. Unfortunately the startup code and run
time library supplied with Borland C++ 4.52 was too bulky for use with Digger
(don't you think a 40K executable for «Hello, World!» is a bit excessive?), so
I used the startup code and library and from Turbo C 2.01, with some minor
modifications: I had to rewrite some of the in-line functions. These are in the
file BC02.ASM, which you can assemble to an .OBJ file and add to your TC2.01
run time library if you want to. However, you can also use Turbo C 2.01 and
TLINK 2.0 with only some minor modifications to MAKEFILE.MAK and RESPONSE.RSP.