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Chapter 10: Configuring the Emulator
Emulator Configuration Items
The emulator will allocate one 256K block from the SRAM memory modules
and will use the 4-Kbyte, dual-port memory for the rest of the range. Only one
mapper term is created (without the dp attribute). This combination of SRAM
and dual-port memory affects the MC68020 emulator differently from the way
it affects the MC68030/EC030 emulator. The MC68020 dual-port memory is
16-bits wide, which means you will see a change from 32-bit to 16-bit fetches as
the processor crosses the boundary between the two memory types. The
MC68030/EC030 dual-port memory is 32 bits wide, but you may still see a
speed difference for dual-port memory accesses by the MC68030/EC030.
You can use function codes when mapping memory. For example, you might
want to map separate ranges for user and supervisor function codes:
1000 thru 1fffh supervisor emulation ram
1000 thru 1fffh user emulation ram
Then, to load programs named supprog.x and userprog.x into the supervisor
and user memory spaces, you would use the commands:
load supprog fcode s
load userprog fcode u
To modify the emulator pod configuration
You can define the way the emulator interacts with the target system interface
by modifying the emulator pod configuration.
• Answer the question:
Modify emulator pod configuration?
yes
no
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to enter the series of emulator pod configuration questions.
to bypass the emulator pod configuration questions and
skip to the debug/trace options. (This is the default.)
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