HP 64783A, Руководство пользователя

Страница: 566 / 816

Request access to guarded memory: <address> (Error 707)
Cause: The address or address range specified in the command included addresses
within a range mapped as guarded memory. When the emulator attempts to access
these during command processing, the above message is printed, along with the
specific address or addresses accessed.
Action: Reenter the command and specify only addresses or address ranges within
emulation or target RAM or ROM. You can also remap memory so that the desired
addresses are no longer mapped as guarded.
Request cannot be satisfied with remaining map resources (Error 147)
Cause: Although you have not exceeded the maximum number of map terms that
can be specified in the memory map, you have run into a hardware resource
limitation in the emulator that arises when target memory is mapped including the
transfer cache inhibit attribute.
There are eight hardware resources on the emulation probe for mapping emulation
memory and driving the TCI signal for target memory ranges. When two
emulation memory modules are installed, the emulator requires seven of these
resources to map all of the emulation memory. Target memory ranges require
either zero or one resource, depending on whether or not use of the transfer cache
inhibit attribute matches its use in the "Default Memory Type" term. For example,
if "Default Memory Type" is mapped to target RAM and the Transfer Cache Inhibit
attribute is OFF, one hardware resource is required to add a map term for target
memory that requires Transfer Cache Inhibit to be ON. Consuming additional
hardware resources for mapping target memory will reduce the amount of
emulation memory available for mapping. Once all eight hardware resources have
been consumed, mappable emulation memory will be reduced to zero and you will
get this message.
Action: Try to minimize the number of hardware resources used for mapping target
memory by mapping the "Default Memory Type" term to target memory both with
the Transfer Cache Inhibit attribute ON and OFF. Find out which specification for
Default Memory Type uses the least number of hardware resources.
Chapter 12: Emulator Error Messages
Request access to guarded memory: <address> (Error 707)
536