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INTRODUCTION
also provides 1 K of writeable program
memory which may
be
used to debug user
programs. A
multiple single step feature
is
also provided in which the processor steps
through its program dumping
all internal
contents to external
RAM
where it may
be
later displayed
or
typed out
on
an
external
terminal.
Paper tape input and output in
Intel's hexadecimal format
is
also available
through the TTY.
1.3.6 Intellec Development System
The Intellec Microcomputer Development
System
is
a modular development system
which can
be
expanded
as
necessary to meet
the requirements of your design
cycle. The
system consists of the processor unit which
is
based on Intel's 8080A microprocessor,
and
several optional units such
as
the
UPP
Universal
PROM
Programmer, the
PTR
High
Speed Paper tape reader, the
DOS Disk
Operating System, and the
Intellec CRT
terminal.
To support the development
of
MCS-48
systems a
macro-assembler ASM
48
is
available
for
the Intellec System
as
well
as
a
personality module
for
the UPP which will
program the EPROM
of
the 8748. Also
available
is
in-circuit
emulation capability
with ICE·49 which will allow emulation and
debug of user's
8048 application programs
on the
8080A-based Intellec Development
System.
The
Intellec system
is
a flexible high
performance
development system which can
support
Intel's various microcomputer fami-
lies with various optional modules. The
1-15
macro-assembler
and
text editor programs
provided
allow the designer to write and edit
his programs
in
assembly language and then
generate the machine
language output
necessary to program the 8748
EPROM. The
availability of a high speed CRT and a
diskette operating system
eliminates the
laborious input and output of paper tape files
normally required during the assembly
process. Finally, ICE
48
allows the user to
extend the resources of his entire
Intellec
system into the
8048
socket of his own
system and
use
all its emulation, debug, and
display facilities directly.
1.3.7 Production
Once a working program has been achieved,
a preproduction phase
usually follows where
several prototype systems are evaluated in
simulated situations
or
in
actual operation in
the
field. During this period the
use
of the
8748
EPROM allows quick alteration of the
application program when problems
or
suggested changes arise. Depending on the
magnitude
and
number of future changes
anticipated, the first production units may
also
be
shipped with EPROM processor.
However, to achieve the maximum cost
reduction
potential
in
high volume appli-
cations, a conversion to the
8048
ROM
is
usually necessary. This
is
an
easy transition
since the
8048
and 8748 are pin and machine
code
compatible equivalents. The user
merely develops a hexadecimal tape of his
8748
program memory contents using his
Intellec System
or
PROMPT
48
development
aid and sends it to Intel along with his 8048
order.
As
the
8048
ROM's arrive they can
immediately replace the
8748
EPROMs.