Why does ram addressing start at 0x00010000? Topic is solved

[MFlamer]

There must be a good reason..... Sure would be nice to have an address fit in 16b without having to mask in that extra bit. 

Thanks!

[infiniteimprobability]

I beleive it's a simple way of catching null pointers - any memory accesses without that bit set will throw an exception.

There are lots addressing modes that allow you to fit branches/loads/stores into 16 or 32b instructions efficiently using the Data Pointer / Program Counter, constant pool or immediate etc..

 

[Bianco]

From 0 tot 64k is the boot ROM memory space