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INTRODUCTION
TO
MCS-85™
purpose
organization
and
instruction
set
matched the requirements
of
these products.
Recognizing that hardware was but a
small part
in the
overall system picture, Intel developed
both
hardware
and
software
tools
for
the
design engineer so
that
the transition from pro-
totype
to
production would
be
as simple and
fast as
possible. The commitment of providing
a
total systems approach with the 8008 micro-
computer system was actually the basis for the
sophisticated,
comprehensive
development
tools
that
Intel has available today.
THE 8080A MICROPROCESSOR
With the advent of high-production N-channel
RAM
memories and
40
pin DIP packaging, Intel
designed the 8080A microprocessor. It was
designed
to
be
software compatible with the
8008 so that the existing users of the 8008
could
preserve their investment in software and at the
same time provide
dramatically increased per-
formance
(2
micro-second instruction execu-
tion), while reducing the amount
of
components
necessary
to
implement a system. Additions
were made
to
the basic instruction set
to
take
advantage
of
this
increased performance and
large system-type features were included on-
chip such as DMA, 16-bit addressing and exter-
nal
stack memory so
that
the total spectrum
of
application could be significantly increased.
The 8080 was
first
sampled in December
1973.
Since that time
it
has become the standard
of
the industry and is accepted as the primary
building block for more microcomputer based
applications than all other microcomputer sys-
tems combined.
A TOTAL SYSTEMS COMMITMENT
The Intel® 8080A Microcomputer System en-
compasses a total systems commitment
to
the
user
to
fully support his needs both in develop-
ing prototype systems and reliable, high volume
production. From complex MOS/LSI peripheral
components
to
resident high level systems
language (PUM) the Intel® 8080 Microcom-
puter
System provides the most comprehen-
sive, effective
solution
to
today's system pro-
blems.
1-7
20
15
10
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r
o
1973
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1974
PROTOTYPE
1975
YEAR
1976
1977
PRODUCTION
:::
--
1978