HP 64783A, User Manual

Page: 418 / 816

Resource limitations
If you load the DeMMUer by using one of the Settings
→
DeMMUer
→
Load from
Memory/Memory... or load demmuer commands and your emulator performs its
task and returns a prompt to the command line, you won’t need to know about the
deMMUer resource limitations. When the deMMUer is loaded without any
problems, the prompt simply shows on screen and you can proceed with your
measurement. The following information will help you deal with problems when
you try to load the deMMUer and receive a message such as "Out of deMMUer
resources". Note that when you see one error message, there may have been other
messages generated at the same time. Display the error log to see all of the error
messages that were generated. This will give you additional information about the
error that caused the message to appear.
The deMMUer has a table where it records ranges of physical addresses that it can
reverse translate to logical addresses. This table has eight entries, and each entry
contains a single physical address range. Each address range in the table will be 32
Mbytes. Up to 256 Mbytes of physical addresses can be reverse translated.
Normally, entries in this table are allocated automatically, without intervention.
address..address
address..address
address..address
address..address
address..address
address..address
address..address
Chapter 10: Using Memory Management
Using the DeMMUer
388