This is a demo plug-in which shows how to add opcodes to E11 using code
written in assembly language.  The sample instruction is a 32x32-bit unsigned
multiply instruction which is added as opcode 000077, and multiplies R3:R2
by R1:R0, leaving the result in R1:R0 (without affecting the flags).

The module may be built with the Watcom assembler and linker, which are
available for free from www.openwatcom.org.  Typing "wmake" will build the
"INST.DLL" module, and then "install inst" inside E11 will install it.

John Wilson, 23-Feb-2006