Numeric types supported are two's complement binary integers in the format
used by the MC68000 processor - high byte first, high word first - the
reverse of 8088 and 6502 format.

        UBYTE    8 bits unsigned
        WORD    16 bits signed
        UWORD   16 bits unsigned
        LONG    32 bits signed

The actual type definitions depend on the CPU and the compiler.  In this
document, we'll express data type definitions in the C programming
language. [See C, A Reference Manual.]  In 68000 Lattice C:

        typedef unsigned char   UBYTE;  /*  8 bits unsigned     */
        typedef short           WORD;   /* 16 bits signed       */
        typedef unsigned short  UWORD;  /* 16 bits unsigned     */
        typedef long            LONG;   /* 32 bits signed       */