MOTOROLA
ROM MODULE
MMC2001
5-2
REFERENCE MANUAL
The SPROM control bit in the EIM configuration register allows selective access pro-
tection to be applied to the ROM. (See 7.7 EIM Configuration Register.) This bit
may be used to control read access to the ROM based on the state of the M•CORE
PSR(S) bit. Attempted cycles to a protected ROM address space are terminated with
a TEA response to the CPU.
5.3 Applications
The ROM module can be used to store:
• Reset boot code
• Frequently accessed code
• Table of constants
• Revision and identification registers for all MMC2001 peripherals
• Self-test diagnostic code
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