Fetching bytes/words and stack access are more processor specific than I thought.

Signed-off-by: Adrian.Conlon <adrian.conlon@gmail.com>

src/IntelProcessor.cpp

@@ -4,9 +4,11 @@
 EightBit::IntelProcessor::IntelProcessor(Memory& memory)
 : Processor(memory) {
 	MEMPTR().word = 0;
+	SP().word = 0xffff;
 }
 
 void EightBit::IntelProcessor::initialise() {
 	Processor::initialise();
 	MEMPTR().word = 0;
+	SP().word = 0xffff;
 }

src/Processor.cpp

@@ -5,7 +5,6 @@ EightBit::Processor::Processor(Memory& memory)
 : m_memory(memory),
   cycles(0),
   m_halted(false) {
-	SP().word = 0xffff;
 	PC().word = 0;
 }
 
@@ -14,6 +13,5 @@ void EightBit::Processor::reset() {
 }
 
 void EightBit::Processor::initialise() {
-	SP().word = 0xffff;
 	reset();
 }