Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Let us review the operation of the stack within the 68HC11, the stack is a defined area of RAM which is last in first out register (LIFO) . Access to the stack is made via a stack pointer (SP). In the 68HC11 there is only one stack pointer and it is initialised by the LDS command. To transfer data onto the stack we can use the command PSHA or PSHB i.e. push register A or B onto the stack. To remove data simply pull it i.e PULA or PULB, likewise the index registers may be stacked etc.
PSHA Push A onto Stack PSHB Push B onto Stack PSHX Push X onto Stack PSHY Push Y onto Stack PULA Pull A onto Stack PULB Pull B onto Stack PULX Pull X onto Stack PULY Pull Y onto Stack
Every time data is 'Pushed' onto the stack the Stack pointer is decrements accordingly. The stack is used often by the micro controller for temporary holding data, if a subroutine occurs, the processor stacks the return address and upon the receipt of the RTS command, it pulls the return address automatically. During an interrupt the processor stacks the full details of itself i.e.
SP Condition code SP-1 Accumulator A SP-2 Accumulator B SP-3 Index register X high SP-4 Index register X low SP-5 Index register Y high SP-6 Index register Y low SP-7 return address High SP-8 Return address Low SP-9 Stack pointer after interrupt
Therefore great care should be taken when using the stack as during an interrupt or subroutine if you place data on the stack you must remove the data before you return from it.
Cross Bar The crossbar network is the easiest interconnection network. It has a two dimensional grid of switches. It is a non-blocking network and give connectivity among inp
Q. Explain about parallel programming environment? The parallel programming environment comprises of a debugger, an editor, performance evaluator, programme visualizer for incr
Often calculating all the data is not possible by aggregations for this reason some of the difficult data problems are solved. In order to verify which data should be solved and me
Question: (a) (i) Explain properties of the WebService attribute. (ii) Discuss three properties of the WebMethod attribute. (b) What are WSDL documents used for? (c)
How optimization is achieved in DNS? Two primary optimizations used in DNS and they are: replication and caching. All root servers is replicated; various copies of the server
how can get payment
Prior Conditions - Logic programs: However firstly there we must make sure that our problem has a solution. Whether one of the negative examples can be proved to be true from
what is the importance of chemistry for computer engineering?
Is it possible to unit test an MVC application without running the controllers in an ASP.NET process? Ans) Yes, all the features in an asp.net MVC application are interface ba
Q. Explain the properties of Hypercube? Properties of Hypercube: Hypercube is both edge and node symmetric. The labels of any two neighbouring nodes vary in exactl
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd