if(this->conditionMet(instr->getCondition())) {
cout << "Executing: " << instr->toString() << endl;
instr->execInstr();
+ this->incPerfBy(instr->getClockCount());
}
else {
cout << "Didn't Execute " << instr->toString() << "; condition wasn't met" << endl;
+ this->incPerf();
}
}
}
+CDat CCpu::getNextPC() const
+{
+ return m_pc_next;
+}
+
CDat CCpu::getCurPC() const
{
return m_pc;
m_pc_next = val;
}
+CDat CCpu::getFlags() const {
+ CDat psw = 0;
+ psw += (this->m_Z ? 1 : 0);
+ psw += (this->m_O ? 2 : 0);
+ psw += (this->m_C ? 4 : 0);
+ psw += (this->m_S ? 8 : 0);
+ return psw;
+}
+
+void CCpu::setFlags(CDat psw) {
+ this->m_Z = ((psw & 0x1) != 0);
+ this->m_O = ((psw & 0x2) != 0);
+ this->m_C = ((psw & 0x4) != 0);
+ this->m_S = ((psw & 0x8) != 0);
+}
+
void CCpu::updateFlags(CDat val) {
this->m_Z = (val == 0);
this->m_S = ((val >> (BIT_LEN-1)) & 0x1);
- this->m_C = false;
- this->m_O = false;
+/* this->m_C = false;
+ this->m_O = false; */
+}
+
+void CCpu::updateFlags(CDatd val, CDat a, CDat b) {
+ this->m_Z = (val == 0);
+ this->m_S = ((val >> (BIT_LEN-1)) & 0x1);
+ this->m_C = ((val >> (BIT_LEN)) & 0x1);
+ bool a_31 = ((a >> (BIT_LEN-1)) & 0x1);
+ bool b_31 = ((b >> (BIT_LEN-1)) & 0x1);
+ bool val_31 = ((val >> (BIT_LEN-1)) & 0x1);
+ this->m_O = ((a_31 && b_31 && !val_31) || (!a_31 && !b_31 && val_31));
+}
+
+void CCpu::updateCarry(bool c)
+{
+ this->m_C = c;
+}
+
+bool CCpu::getCarry()
+{
+ return this->m_C;
}
void CCpu::updateFlags(bool z, bool o, bool c, bool s)
CDat CCpu::getRegister(const int addr) const
{
- return m_reg.get(addr);
+ return m_reg.getDirect(addr);
}
void CCpu::setRegister(const int addr, CDat data)
{
- m_reg.set(addr, data);
+ m_reg.setDirect(addr, data);
}
CDat CCpu::getRAM(const int addr) const
this->m_stack = val;
}
-CCpu::CCpu(int regs, int ram, int prog) : m_Z(false), m_S(false), m_C(false), m_O(false), m_pc(0), m_pc_next(0), m_reg(regs), m_ram(ram), m_prog(prog), m_stack(0)
+CDat CCpu::getPerf() const
+{
+ return this->m_perf;
+}
+
+void CCpu::setPerf(CDat val)
+{
+ this->m_perf = val;
+}
+
+void CCpu::incPerf()
+{
+ this->m_perf++;
+}
+
+void CCpu::incPerfBy(short inc)
+{
+ this->m_perf += inc;
+}
+
+
+CCpu::CCpu(int regs, int ram, int prog) : m_Z(false), m_S(false), m_C(false), m_O(false), m_pc(0), m_pc_next(0), m_perf(0), m_reg(regs), m_ram(ram), m_prog(prog), m_stack(0)
{
}