User`s guide

B
ROM Partitioning
This section describes ROM partitioning and subroutine entry points that
are public and are guaranteed to be compatible over future versions of
the firmware. An entry point is the address at which any subroutine or
subprogram will start execution.
B.1 Firmware EPROM Layout
The KA52/53/54 has 512 Kbytes of FEPROM. Unlike previous Q22–bus based
processors, there is no duplicate decoding of the FEPROM into halt-protected
and halt-unprotected spaces. The entire FEPROM is halt-protected. See
Figure B–1 for the KA52/53/54 FEPROM layout.
ROM Partitioning B–1