<s>
Each	O
time	O
Intel	O
launched	O
a	O
new	O
microprocessor	B-Architecture
,	O
they	O
simultaneously	O
provided	O
a	O
System	O
Development	O
Kit	O
(	O
SDK	O
)	O
allowing	O
engineers	O
,	O
university	O
students	O
,	O
and	O
others	O
to	O
familiarise	O
themselves	O
with	O
the	O
new	O
processor	O
's	O
concepts	O
and	O
features	O
.	O
</s>
<s>
Kits	O
varied	O
in	O
their	O
specific	O
features	O
but	O
generally	O
offered	O
optional	O
memory	O
and	O
interface	O
configurations	O
,	O
a	O
serial	O
terminal	O
link	O
,	O
audio	O
cassette	O
storage	O
,	O
and	O
EPROM	B-General_Concept
program	O
memory	O
.	O
</s>
<s>
Intel	O
's	O
Intellec	B-Device
development	O
system	O
could	O
download	O
code	O
to	O
the	O
SDK	O
boards	O
.	O
</s>
<s>
In	O
addition	O
,	O
Intel	O
sold	O
a	O
range	O
of	O
larger-scale	O
development	O
systems	O
which	O
ran	O
their	O
proprietary	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
and	O
hosted	O
development	O
tools	O
assemblers	B-Application
and	O
later	O
compilers	B-Language
targeting	O
their	O
processors	O
.	O
</s>
<s>
These	O
included	O
the	O
Microcomputer	O
Development	O
System	O
(	O
MDS	O
)	O
,	O
Personal	O
Development	O
System	O
(	O
PDS	O
)	O
,	O
In-Circuit	B-Application
Emulators	I-Application
(	O
ICE	O
)	O
,	O
device	O
programmers	O
and	O
so	O
on	O
.	O
</s>
<s>
Most	O
of	O
these	O
were	O
rendered	O
obsolete	O
when	O
the	O
IBM	B-Device
PC	I-Device
became	O
a	O
de	O
facto	O
standard	O
,	O
and	O
by	O
other	O
standardised	O
technologies	O
such	O
as	O
JTAG	O
.	O
</s>
<s>
The	O
SIM4-01	O
prototyping	O
board	O
holds	O
a	O
complete	O
MCS-4	B-General_Concept
micro	O
computer	O
set	O
including	O
the	O
first	O
microprocessor	B-Architecture
,	O
the	O
Intel	B-General_Concept
4004	I-General_Concept
,	O
introduced	O
in	O
1971	O
.	O
</s>
<s>
The	O
SIM8-01	O
prototyping	O
board	O
holding	O
a	O
MCS-8	B-General_Concept
micro	O
computer	O
set	O
,	O
based	O
on	O
the	O
Intel	B-General_Concept
8008	I-General_Concept
was	O
released	O
in	O
1972	O
.	O
</s>
<s>
This	O
was	O
Intel	O
’s	O
first	O
8-bit	O
Microprocessor	B-Architecture
based	O
development	O
system	O
.	O
</s>
<s>
Although	O
not	O
marketed	O
as	O
such	O
,	O
the	O
SIM8-01	O
represents	O
the	O
first	O
8-bit	O
Microprocessor	B-Architecture
based	O
Single	O
Board	O
Computer	O
(	O
SBC	O
)	O
available	O
as	O
early	O
as	O
April	O
1972	O
,	O
priced	O
at	O
$900	O
( $	O
2,850	O
in	O
2022	O
)	O
.	O
</s>
<s>
The	O
8080	B-General_Concept
System	O
Design	O
Kit	O
(	O
SDK-80	O
)	O
of	O
1975	O
provided	O
a	O
training	O
and	O
prototype	O
vehicle	O
for	O
evaluation	O
of	O
the	O
Intel	B-General_Concept
8080	I-General_Concept
microcomputer	O
system	O
(	O
MCS-80	B-General_Concept
)	O
,	O
clocked	O
at	O
2.048MHz	O
.	O
</s>
<s>
(	O
The	O
basic	O
8080	B-General_Concept
instruction	O
cycle	O
time	O
was	O
1.95μs	O
,	O
which	O
was	O
four	O
clock	O
cycles	O
.	O
)	O
</s>
<s>
The	O
SDK-85	O
MCS-85	B-General_Concept
System	O
Design	O
Kit	O
was	O
a	O
single	O
board	O
microcomputer	O
system	O
kit	O
using	O
the	O
Intel	B-General_Concept
8085	I-General_Concept
processor	O
,	O
clocked	O
at	O
3MHz	O
with	O
a	O
1.3μs	O
instruction	O
cycle	O
time	O
.	O
</s>
<s>
ROM	O
2	O
KB	O
expandable	O
to	O
4	O
KB	O
with	O
another	O
8755	O
EPROM	B-General_Concept
/	O
16	O
programmable	O
IO	O
lines	O
in	O
the	O
expansion	O
socket	O
.	O
</s>
<s>
In	O
addition	O
,	O
it	O
can	O
be	O
directly	O
interfaced	O
with	O
a	O
teletype	O
terminal	O
,	O
CRT	O
terminal	O
,	O
or	O
the	O
serial	O
port	O
of	O
an	O
Intellec	B-Device
system	O
.	O
</s>
<s>
The	O
SDK-86	O
(	O
System	O
Design	O
Kit	O
)	O
was	O
the	O
first	O
available	O
computer	O
using	O
the	O
Intel	O
8086	O
microprocessor	B-Architecture
.	O
</s>
<s>
It	O
was	O
sold	O
as	O
a	O
single	O
board	O
kit	O
at	O
a	O
cheaper	O
price	O
than	O
a	O
single	O
8086	O
chip	O
because	O
Intel	O
thought	O
that	O
the	O
success	O
of	O
a	O
microprocessor	B-Architecture
depends	O
on	O
its	O
evaluation	O
by	O
as	O
many	O
users	O
as	O
possible	O
.	O
</s>
<s>
When	O
linked	O
to	O
a	O
host	O
Intellec	B-Device
development	O
system	O
,	O
the	O
HSE-49	O
emulator	O
system-debugging	O
capabilities	O
,	O
with	O
the	O
development	O
system	O
program	O
assembly	O
and	O
storage	O
facilities	O
,	O
provide	O
the	O
tools	O
required	O
for	O
total	O
product	O
development	O
.	O
</s>
