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Chapter 8
CP/M-86
Bootstrap and
Adaptation Procedures
This chapter describes the components of the NEC CP/M-86 system distribution
diskette, the operation of each component, and the procedures followed in modify-
ing CP/M-86 for the APC hardware environment. NEC used these procedures to
adapt the standard CP/M-86 distributed by Digital Research, Inc. to make available
to you the unique features of the APC. There is no need for you to modify the
operating system in any way for normal use on your APC. This chapter is included
primarily for informational purposes.
CAUTION
The procedures outlined in this chapter should
be used only by system programmers who need
to reconfigure the operating system for systems
development purposes. °Do not attempt the
procedures unless it is your intent to modify the
CBIOS. If the procedures are not understood
and followed exactly, you may lose the entire
CP/M-86 operating system.
CP/M-86 is customized for the APC and distributed on two double-sided, double-
density IBM-compatible eight-inch diskettes using a file format which is compatible
with all previous CP/M-80 operating systems. The principal components of the
distribution system are found on the CP/M-86 System Diskette. They are:
•
86/12 Bootstrap ROM (BOOT ROM)
•
Cold Start Loader (LOADER)
•
CP/M-86 System (CPM.SYS)
All the hardware and firmware necessary for running the APC are available in the
BOOT ROM.
8-1
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