Re: MC68020 Embedded System HW Reset Problem - Need Help

Dave wrote:

MMU
Memory Management Unit. There is one built into the '020. It will be disabled by reset. I don't see the MMU causing a problem at reset.

...

The internal cache shouldn't be an issue since it will be cleared by the reset. With the internal cache (256 bytes), I don't know that HP would have included an external cache--adds a lot of complexity (especially considering the internal MMU).


Oops! The '020 did not have a built-in MMU, that was the '030. HP might have included an external MMU, but it adds considerable cost and complexity. External cache to go with it? Adds more cost and complexity.


DaveT
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