Where as all defined SFR's (IE ones that aren't reserved) fit within the range of S:080-S:0FF. So (considering the available IP variants) how can one address or even access S:000-S:07F or S:100-S:1FF? There doesn't appear to be a mechanism listed in the manuals I've looked at (IE the only instructions that can access the SFR's are direct 8bit address byte instructions and they have the range of S:080-S:0FF). Am I missing something or does that sum up the fact although said to exist no SFR's can be really addressed beyond the MCS51 range in the MCS251 architecture?
Stephen
I think Intel now see the 386 and 486 as "microcontrollers"
Don't forget i960 or XScale or the StrongARM that they bought and produced.