INT 31 P - CauseWay - "LockMem32" - LOCK REGION OF MEMORY (32-bit) AX = FF1Ch ESI = starting linear address ECX = size of region in bytes Return: CF clear if successful CF set on error Desc: prevent memory from being swapped out by the virtual memory manager Note: locks are applied on 4K page boundaries, so memory above and below the specified region may be locked as well SeeAlso: AX=FF1Bh,AX=FF1Eh,AX=FF1Fh