MACIMP is a PDP-6 program which can load from DECtape to core memory, dump core onto DECtape, or verify a previously dumped filel against memory. Normally, just before it loads, it clears all of memory to 0 (except itself and locations 0 through 37); and, in general, it does not dump locations containing 0. (It also does not dump itself, or locations 0 through 37.) In this way, a short program uses only a few blocks on tape. MACIMP uses the MAC PDP-6 file structure and directory scheme, and writes files in mode 1.
