walkthrough of test
stack grows toward lower mem addresses
stack pointer does not point to first free location on top of stack
io periph are mem-mapped
msp430 can operate w/o external clocks via DCO
msp430 supports 8 and 16 bit periphs
60K of flash at top of address space, what is range of addresses occupied by flash? from FFFE to 1000
2k of ram, what is range of addresses occupied by the ram if we know ram mem starts at addy 0x0200? from 0200 to 09fe

interrupt exception handling funness