<s>
This	O
is	O
a	O
list	B-Operating_System
of	I-Operating_System
real-time	I-Operating_System
operating	I-Operating_System
systems	I-Operating_System
(	O
RTOSs	O
)	O
.	O
</s>
<s>
This	O
is	O
an	O
operating	B-General_Concept
system	I-General_Concept
in	O
which	O
the	O
time	O
taken	O
to	O
process	O
an	O
input	O
stimulus	O
is	O
less	O
than	O
the	O
time	O
lapsed	O
until	O
the	O
next	O
input	O
stimulus	O
of	O
the	O
same	O
type	O
.	O
</s>
<s>
Name	O
License	B-License
Source	O
model	O
Target	O
uses	O
Status	O
Platforms	O
Official	O
website	O
Apache	B-Device
Mynewt	I-Device
open	O
source	O
embeddedactiveARM	O
Cortex-M	O
,	O
MIPS32	B-Device
,	O
Microchip	O
PIC32	O
,	O
RISC-V	B-Device
Arm	B-Operating_System
OS	I-Operating_System
Cortex-M	O
,	O
Cortex-R	O
,	O
Cortex-A	O
BeRTOS	B-Operating_System
open	O
source	O
embedded	O
archived	O
ARM	B-Architecture
,	O
Cortex-M3	O
,	O
ARM	B-Architecture
ARM7TDMI	O
,	O
Atmel	O
AVR	O
,	O
PowerPC	B-Architecture
(	O
emu	O
)	O
,	O
x86	B-Operating_System
(	O
emu	O
)	O
,	O
x86-64	B-Device
(	O
emu	O
)	O
CapROS	B-Application
open	O
sourceembeddedactive	O
IA-32	O
,	O
ARM9	B-Application
ChibiOS/RT	B-Operating_System
open	O
source	O
embedded	O
,	O
small	O
footprintactive	O
x86	B-Operating_System
,	O
ARM7	O
,	O
ARM9	B-Application
,	O
Cortex-M0-M3-M4	O
,	O
PowerPC	B-Architecture
e200z	O
,	O
STM8	O
,	O
STM32	O
,	O
AVR	O
,	O
MSP430	O
,	O
ColdFire	O
,	O
H8S	B-Device
,	O
ChorusOS	B-Operating_System
defunct	O
SPARC	B-Architecture
,	O
x86	B-Operating_System
,	O
PowerPC	B-Architecture
Concurrent	O
CP/M	O
,	O
became	O
MP/M	B-Operating_System
closed	O
(	O
meanwhile	O
:	O
open	O
source	O
)	O
general	O
purpose	O
,	O
industrial	O
historic	O
8080	B-General_Concept
,	O
Z80	B-General_Concept
,	O
8086	B-General_Concept
Digital	O
Research	O
Concurrent	O
DOS	O
,	O
became	O
Multiuser	B-Operating_System
DOS	I-Operating_System
closed	O
defunct	O
8086	B-General_Concept
,	O
286	O
,	O
386	B-General_Concept
,	O
68000	O
,	O
(	O
also	O
8080/Z80	O
in	O
dual-processor	O
variants	O
)	O
Digital	O
Research	O
Contiki	B-Operating_System
open	O
source	O
embedded	O
,	O
WSN	B-Architecture
active	O
MSP430	O
,	O
AVR	O
,	O
ARM	B-Architecture
Data	B-Operating_System
General	I-Operating_System
RDOS	I-Operating_System
general	O
purpose	O
defunct	O
Data	B-Device
General	I-Device
Nova	I-Device
,	O
Data	B-Device
General	I-Device
Eclipse	I-Device
Deos	O
closed	O
safety	O
critical	O
active	O
x86	B-Operating_System
,	O
PowerPC	B-Architecture
,	O
MIPS	B-Device
DioneOS	B-Operating_System
available	O
for	O
licensee	O
embedded	O
MSP430	O
,	O
MSP430x	O
DNIX	B-Operating_System
closed	O
general	O
purpose	O
defunct	O
68000	O
GEC	B-Device
DOS	O
closed	O
process	O
control	O
defunct	O
GEC	B-Device
4000	O
series	O
DSOS	B-Operating_System
defunct	O
TI-980A	O
minicomputer	O
DSP/BIOS	B-Operating_System
closed	O
,	O
available	O
with	O
license	B-License
general	O
purpose	O
maintenance	O
only	O
Mostly	O
Texas	O
Instruments	O
C2800	O
,	O
C5500	O
,	O
C6000	O
and	O
OMAP	O
DSP	B-Architecture
cores	O
.	O
</s>
<s>
Replaced	O
by	O
TI-RTOS	B-Operating_System
,	O
but	O
available	O
for	O
download	O
.	O
</s>
