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wat are the different rtos available?
wat is the difference beetween RTOS ans OS
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Answer / justin
ordinary OS doesnt keep any time constraints n deadlines
whereas RTOS,realtime OS keep time constrains for all
processes that it keeps track of time consumed by each event
n therefore maintains to finish tasks in specified
time..RTOS are designed n installed in systems where o/p
shud obtain in specific time..like mobile phones n all
| Is This Answer Correct ? | 36 Yes | 5 No |
Answer / satish
The popular RTOS available in the market are
Vxworks,QNX,NetOS,UcosII etc.
The realtime OS provides required service in a bounded
response time.It has the ability to provide the response in
bounded time and it has the above mentioned features.
Realtime systems can be hard realtime and soft realtime
system,it doesn't mean that there is a separate hard RTOS
ans soft RTOS.
| Is This Answer Correct ? | 11 Yes | 4 No |
Answer / achal ubbott
VxWorks,QNX and some derivatives of LINUX are popular RTOS.
An RTOS is a special case of an OS. Here are few things
which make it different.
1. The scheduler has to be pre-emptive.
2. Each task should have a priority.
3. Priority inheritance should be implemented.
| Is This Answer Correct ? | 15 Yes | 13 No |
Answer / ramya
currently there are many commercial rtos available.psos is
taken over by wind river company so no more
psos.vxworks,QNX,windows CE,Symbian,RT linux.
the main diff between rtos nd os are
RTOS iS deterministic which means that i should be able to
tell the exact time at where the task begin and their
deadline.
| Is This Answer Correct ? | 5 Yes | 4 No |
Answer / vinod kumar
RTOS is real time operating system,, mostly it is kernel
programing ,, embedded c ,etc
OS is just operating system ,, windows,linus,mac,etc
| Is This Answer Correct ? | 2 Yes | 5 No |
Answer / surbhit
few available RTOS are:
Vxworks,Symbian,RT linux,wiin CE,Brew,android,ucos II
RT systems have to perform under time constraints if the
particular time boundation is not met then it the process
is cancelled and next task starts whereas when an RT os is
operated in a non real time it is a normal OS
| Is This Answer Correct ? | 1 Yes | 7 No |
Answer / aditya
There are 2 types of rtos... hard rtos and soft rtos.
| Is This Answer Correct ? | 9 Yes | 19 No |
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This program is in verilog and need help to get it working correctly. This is the code i have so far. Please help. Simple testbench would be great. Thanks\ 'define vend_a_drink {D,dispense,collect} = {IDLE,2'b11}; module drink_machine(nickel_in, dime_in, quarter_in, collect, nickel_out, dime_out, dispense, reset, clk) ; parameter IDLE=0,FIVE=1,TEN=2,TWENTY_FIVE=3, FIFTEEN=4,THIRTY=5,TWENTY=6,OWE_DIME=7; input nickel_in, dime_in, quarter_in, reset, clk; output collect, nickel_out, dime_out, dispense; reg collect, nickel_out, dime_out, dispense; reg [2:0] D, Q; /* state */ // synopsys state_vector Q always @ ( nickel_in or dime_in or quarter_in or reset ) begin nickel_out = 0; dime_out = 0; dispense = 0; collect = 0; if ( reset ) D = IDLE; else begin D = Q; case ( Q ) IDLE: if (nickel_in) D = FIVE; else if (dime_in) D = TEN; else if (quarter_in) D = TWENTY_FIVE; FIVE: if(nickel_in) D = TEN; else if (dime_in) D = FIFTEEN; else if (quarter_in) D = THIRTY; TEN: if (nickel_in) D = FIFTEEN; else if (dime_in) D = TWENTY; else if (quarter_in) 'vend_a_drink; TWENTY_FIVE: if( nickel_in) D = THIRTY; else if (dime_in) 'vend_a_drink; else if (quarter_in) begin 'vend_a_drink; nickel_out = 1; dime_out = 1; end FIFTEEN: if (nickel_in) D = TWENTY; else if (dime_in) D = TWENTY_FIVE; else if (quarter_in) begin 'vend_a_drink; nickel_out = 1; end THIRTY: if (nickel_in) 'vend_a_drink; else if (dime_in) begin 'vend_a_drink; nickel_out = 1; end else if (quarter_in) begin 'vend_a_drink; dime_out = 1; D = OWE_DIME; end TWENTY: if (nickel_in) D = TWENTY_FIVE; else if (dime_in) D = THIRTY; else if (quarter_in) begin 'vend_a_drink; dime_out = 1; end OWE_DIME: begin dime_out = 1; D = IDLE; end endcase end end always @ (posedge clk ) begin Q = D; end endmodule
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