}
+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::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 v = (((a ^ b) >> (BIT_LEN-1)) & 0x1) ? true : false;
+ this->m_O = (this->m_S != v);
+}
+
+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