Convert a 32-bit integer value to a real mode segment and offset pointer.

Only integer values from 0x00000 to 0xfffff can be converted with this macro. Larger integer values will return unchanged with the carry flag set. I did not think supporting integer values up to 0x10ffef was worth the extra code required to support them.

A converted integer will result in a pointer with the smallest offset required. The offset will be in the range of 0x0000 and 0x000f. The segment portion of the value will be anything from 0x0000 and 0xffff.

Example:

    IntToPtr ES:DI     ; convert an integer value to a pointer

See also PtrToInt and FlattenPtr.