Chapter 3
Command
(CMD)
File
Generation
The
GENCMD
utility
program
provided with
CP/M-86
produces
CMD
memory
image files suitable for execution
under
CP/M-86.
INTEL 8086 HEX FILE FORMAT
GENCMD
input
is
in Intel hex
format
produced by either the Digital Research
ASM-86 assembler (see the CPIM-86 Programmer's Guide for the APC)
or
the
standard
Intel OH86 utility
program
(see Intel document #9800639-03, MCS-86
Software Development Utilities Operatinglnstructionsfor
ISIS-II
Users). The
CMD
file
produced
by
GENCMD
contains a header record which defines the memory
model
and
memory size requirements for loading
and
executing the
CMD
file.
An
Intel hex file consists
of
the traditional sequence
of
ASCII records in the
following format:
where the beginning
of
the record
is
marked by an ASCII colon,
and
each subse-
quent
digit position contains
an
ASCII hexadecimal digit in the range 0-9
or
A-F.
The fields are defined in Table 3-1.
3-1
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