cpu read byte fix so we can do exception if no memory
change memory find it returns f if memory not available or return memory
if available
fix up exception function
Memory read and write byte and word
Add some dependancy
Add routine to slit a word 16 bits to two bytes 8 bits
cpu-read-word needs mor work
cpu-write-word also
Added some dependancy
Memory-read-word tested but may remove later same with memory-write-word