Asynchronous Finite State Machine

[roshan12]

Need help with asynchronous finite state machine or a control structure for an 8 bit asynchronous microcontroller....

 

[TrickyDicky]

Post the problem and we can help.

 

[roshan12]

Designing a basic 8 bit microcontroller in asynchronous format. ie., the communication between the internal blocks are initiated bby a request-acknowledge handshaking mechanism rather than a global synchronous clock. (using muller c-elements for handshake)
The basic dataflow structure include a PC, ROM,instruction decoder, AlU accumulator, register files andan internal RAM.

I'm having trouble with design of a unit to generate the control signals.
Since the functioning is independant of a global clock, a standard fsm structure for the control unit didn't seem viable.

Generally a RISc machine (synchronous) used fsm state machine to provide control signals and control all the processor activities.

Does an Async. uC require a special approach??
Does it require a specific Async. fsm??
OR is there any better methods?

Thank You..

 

[roshan12]

Designing a basic 8 bit microcontroller in asynchronous format. ie., the communication between the internal blocks are initiated bby a request-acknowledge handshaking mechanism rather than a global synchronous clock. (using muller c-elements for handshake)
The basic dataflow structure include a PC, ROM,instruction decoder, AlU accumulator, register files andan internal RAM.

I'm having trouble with design of a unit to generate the control signals.
Since the functioning is independant of a global clock, a standard fsm structure for the control unit didn't seem viable.

Generally a RISc machine (synchronous) used fsm state machine to provide control signals and control all the processor activities.

Does an Async. uC require a special approach??
Does it require a specific Async. fsm??
OR is there any better methods?

 

[axcdd]

Just read about muller c-elements approach

http://groups.google.com/forum/#!topic/comp.lang.vhdl/amnyV0-XmzE
http://www.google.com/patents/EP2515197A1?cl=en

and i hope that link will clear all questions
**broken link removed**