Pub Date : 2021-06-25DOI: 10.1002/9781119782735.app4
In this book finite state machines (FSMs) have been implemented using the equations obtained from the state diagram/Petri net. This approach ensures that the logic for the state machine is under complete control of the designer. However, if the state machine is implemented using behavioural mode, the Verilog compiler will optimize the design. Remember that the behavioural method describes the behaviour of the designed system. There is a very close relationship between the state diagram and the behavioural Verilog description that allows a direct translation from the state diagram to the Verilog code.
{"title":"Appendix A4: Finite State Machines Using Verilog Behavioural Mode","authors":"","doi":"10.1002/9781119782735.app4","DOIUrl":"https://doi.org/10.1002/9781119782735.app4","url":null,"abstract":"In this book finite state machines (FSMs) have been implemented using the equations obtained from the state diagram/Petri net. This approach ensures that the logic for the state machine is under complete control of the designer. However, if the state machine is implemented using behavioural mode, the Verilog compiler will optimize the design. Remember that the behavioural method describes the behaviour of the designed system. There is a very close relationship between the state diagram and the behavioural Verilog description that allows a direct translation from the state diagram to the Verilog code.","PeriodicalId":396893,"journal":{"name":"Digital System Design using FSMs","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121841884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-25DOI: 10.1002/9781119782735.ch5
{"title":"Clocked One Hot Method of FSM Design","authors":"","doi":"10.1002/9781119782735.ch5","DOIUrl":"https://doi.org/10.1002/9781119782735.ch5","url":null,"abstract":"","PeriodicalId":396893,"journal":{"name":"Digital System Design using FSMs","volume":"246 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133934861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-25DOI: 10.1002/9781119782735.ch4
{"title":"Asynchronous FSM Methods","authors":"","doi":"10.1002/9781119782735.ch4","DOIUrl":"https://doi.org/10.1002/9781119782735.ch4","url":null,"abstract":"","PeriodicalId":396893,"journal":{"name":"Digital System Design using FSMs","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125057712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-25DOI: 10.1002/9781119782735.app5
I was once asked by some of my students whether it was possible for software to run without hardware. This was an interesting question, and given that I spend much of my time writing computer programs, I felt well placed to answer it. First, I decided to look into the basic needs of software. The idea was to look at digital hardware and consider what basic hardware would be needed to produce a programmable system to make a finite state machine (FSM) that could be programmed to produce clock‐driven FSMs. It should be possible to use similar ideas for event‐driven FSM, but I have not looked into these yet. On reflection, it should be possible to program an FPGA with event cells that could be used with other hardware to make a programmable device. At first I looked at basic information available in some electronic digital devices, such as parallel loading counters, digital multiplexers, and quad latches, and eventually came up with the arrangement in Figure A5.1 for a programmable FSM. The system needs to be able to digitally count, so it makes use of a four‐stage clocked synchronous up counter. There is a need to be able to both increment the counter while also allowing the system to branch between states, so the counter needs to have parallel loading inputs so as to branch to these other states.
{"title":"Appendix A5: Programming a Finite State Machine","authors":"","doi":"10.1002/9781119782735.app5","DOIUrl":"https://doi.org/10.1002/9781119782735.app5","url":null,"abstract":"I was once asked by some of my students whether it was possible for software to run without hardware. This was an interesting question, and given that I spend much of my time writing computer programs, I felt well placed to answer it. First, I decided to look into the basic needs of software. The idea was to look at digital hardware and consider what basic hardware would be needed to produce a programmable system to make a finite state machine (FSM) that could be programmed to produce clock‐driven FSMs. It should be possible to use similar ideas for event‐driven FSM, but I have not looked into these yet. On reflection, it should be possible to program an FPGA with event cells that could be used with other hardware to make a programmable device. At first I looked at basic information available in some electronic digital devices, such as parallel loading counters, digital multiplexers, and quad latches, and eventually came up with the arrangement in Figure A5.1 for a programmable FSM. The system needs to be able to digitally count, so it makes use of a four‐stage clocked synchronous up counter. There is a need to be able to both increment the counter while also allowing the system to branch between states, so the counter needs to have parallel loading inputs so as to branch to these other states.","PeriodicalId":396893,"journal":{"name":"Digital System Design using FSMs","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127825570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：