On 04/11/2012 09:15 PM, Richard Sandiford wrote:
> Bernd Schmidt writes:
>> On 04/11/2012 07:31 PM, Peter Bigot wrote:
>>> The biggest one is that widening from 20-bit to 32-bit is an extremely
>>> expensive operation: it was a 16-bit ISA, but some newer MCUs support
>>> an extension with 20 bits
Bernd Schmidt writes:
> On 04/11/2012 07:31 PM, Peter Bigot wrote:
>> The biggest one is that widening from 20-bit to 32-bit is an extremely
>> expensive operation: it was a 16-bit ISA, but some newer MCUs support
>> an extension with 20 bits in each register and a set of new
>> instructions that
On 04/11/2012 07:31 PM, Peter Bigot wrote:
> The biggest one is that widening from 20-bit to 32-bit is an extremely
> expensive operation: it was a 16-bit ISA, but some newer MCUs support
> an extension with 20 bits in each register and a set of new
> instructions that must be used to preserve the
