Initial state?

Initial state?

[Ben Elliston]

One useful property of a CPU that I think meets the application-neutral
requirement for new .cpu entries is its initial state -- the power-up values
for registers, in particular.

This would help in generating simulator code whereby the code could be a)
automatically generated by CGEN and b) remembered. :-)

Ben

Initial state?

[Doug Evans]

Ben Elliston writes:
 > One useful property of a CPU that I think meets the application-neutral
 > requirement for new .cpu entries is its initial state -- the power-up values
 > for registers, in particular.
 > 
 > This would help in generating simulator code whereby the code could be a)
 > automatically generated by CGEN and b) remembered. :-)

It is application independent, but it's also not useful to more
than a few apps.  I also wonder whether certain chips have different
kinds of resets.

I'm not sure where the best place to record the information is
but I'm slightly leaning toward tucking this info away by itself.

Re: Initial state?

[Frank Ch. Eigler]

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Hi -

On Wed, Nov 29, 2000 at 04:23:57PM +1100, Ben Elliston wrote:
: One useful property of a CPU that I think meets the application-neutral
: requirement for new .cpu entries is its initial state -- the power-up values
: for registers, in particular. [...]

IMO, these values are not really interesting outside of simulators,
nor that well-defined.  (power-up reset vs. process-model initial
values // which exact cpu model ...?)

- FChE

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