Title: ZPP
Short: Zero page protector (v1.00)
ShortName: zpp.zip
Author: Alun Jones <auj@aber.ac.uk>
Date of Release: 22-apr-96		
Status: Freeware
Size (unarchived):	
Archiver used: Spark

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Short Description:

Zpp is a simple utility which alters the MEMC mappings on ARM 2xx and 3xx
machines to prevent user-mode writes to locations less than 0x8000. Well-
behaved programs shouldn't write here, and all OS routines which write to
these locations do so in privileged modes.  ZPP prevents (for example) NULL
pointer dereferences from crashing the machine. Rather, they cause an
address exception and a stack backtrace in the guilty program.