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INTELLEC PROMPT 48
FUNCTIONAL DESCRIPTION
"PROMPT" stands for PROgraMming Tool. It Is a pro-
grammer for
8748
EPROMs,
and a versatile aid for
debugging
MCS-48
programs. Programs can
be
entered
via its
Integral panel keyboard, programming socket, or
serial channel. Almost any terminal can
be
Interfaced
to
the serial channel, Including a teletypewriter,
CRT,
or
an
Intellec microcomputer development system. Intellec
PROMPT
48
simplifies the programming
of
MCS-48
systems. Like the
8748
It Is radically
new,
highly
In-
tegrated,
and
expandable. Like the
MCS·48
family, it Is
low
cost, and Ideal for small applications and programs.
It Is a design aid, not a development system with
sophisticated software and peripherals.
MCS-48 Processors
PROMPT
48
comes complete with two of Intel's revolu-
tionary
MCS-48
processors:
an
8748-4
Single Compo-
nent 8-Blt Microcomputer and and
8035-4
Single Compo-
nent 8-Blt Microcomputer. Advances
In
n-channel
MOS
technology allow Intal, for the first tima to integrate Into
one 40-pin component all computer functions:
8-blt
CPU
1 K x 8-blt
EPROM/ROM
program memory
64
x 8-bit
RAM
data memory
27
Input/output lines
8-blt timer/event counter
Performance - More than
90
instructions - each one
or two cycles - make the single chip
MCS-48
equal
in
performance
to
most multi-chip microprocessors. The
MCS-48
Is
an
efficient controller and arithmetic pro-
cessor, with extensive
bit
handling, binary, and
BCD
arithmetic instructions. These are encoded for
minimum program length;
70% are single byte opera-
tion codes, and none Is more than two bytes.
Flexibility - Three interchangeable, pin-compatible
devices offer flexibility and
low cost
in
development and
production,
as
follows:
8748
- with user-programmable and erasable
EPROM
program memory for prototype and pre-productions
systems.
8048
- with factory-programmed mask
ROM
memory
for low-cost, high volume production.
8035
- without program memory, for use with external
program memories.
Circuitry - Each
MCS-48
processor operates
on
a
single
+
5V
supply, with internal oscillator and clock
driver, and circuitry for Interrupts and resets. Extra
cir-
cuitry is
inthe
8048
ROM
processor
to
allow low power
standby operation. The
64
x 8
RAM
data memory can
be
independently powered.
Compatibility - For systems requiring additional
com-
patibility, the
MCS-48
can
be
expanded with the new
8243
110
expander,
8155
I/O
and 256-byte
RAM,
8755
110
and 2K-byte
EPROM,
or
8355
110
and 2K
ROM
devices.
MCS-48
processors readily Interface
to
MCS-80/85
peripherals and standard memories.
Memory Capacity
PROMPT
48
is a complefe, fully assembled and powered
microcomputer system including program memory, data
memory,
110,
and system monitor beyond that available
on
MCS-48
single component computers. 1 K bytes
of
PROMPT
system
RAM
serve
as
"writable program
mem-
ory" - a
ROM
simulator for the program memory on
each
MCS-48
computer.
256
bytes
of
PROMPT
system
RAM
serve
as
"external data memory," beyond the
64
register bytes
on
each
MCS-48
computer. Users may fur-
ther expand program or data memory via the panel
110
ports and bus connector.
Programming
Programs written first
In
assembly language, are
entered
In
machine language and debugged with
calculator-like ease
on
the large, Informative display
and keyboard panel. Most
MCS-48
operations can
be
specified with only two keystrokes. Once entered,
routines can
be
exercised one Instruction (single step)
or many Instructions at a time. The principal
MCS-48
register - the accumulator -
Is
displayed while single
stepping. Programs
can
be
executed in real time
(GO
NO
BREAK)
or with
as
many
as
eight different break-
points
(GO
WITH
BREAK).
Control
PROMPT
48
can
be
fully controlled either
by
the panel
keyboard and displays, or remotely by a
serial channel.
Thus a teletypewriter or
CRT
can
be
used but neither Is
required.
Access
The
PROMPT
panel
110
ports and bus connector allow
easy access
to
all
MCS-48
pins except those reserved
for control
by
the
PROMPT
system, namely
EA
external
access,
SS
Single step, and
X1,
X2
clock inputs.
Optional Expansion
PROMPT
48
may
be
expanded beyond the resources
on
both the
MCS-48
single component computer and the
PROMPT
system. External program and data memory
may
be
Interfaced and input/out ports added with the
8243
110
expander.
10-10 AFN-00352A-04