Caused by specifically asking for or requiring MEMF_FAST memory.  If you
don't need Chip RAM, ask for memory type 0L, or MEMF_CLEAR, or
MEMF_PUBLIC|MEMF_CLEAR as applicable.  If there is Fast memory available,
you will be given Fast memory.  If not, you will get Chip RAM.  May also
be caused by trackdisk-level loading of code or data over important system
memory or structures which might reside in low Chip memory on a
Chip-RAM-Only machine.