Mit Animation (PDF) - Digitaltechnik

Erweiterung Simulator (Teil 3)
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void cpu_Y86t::add_sub(
unsigned &dest, unsigned src, bool sub)
{
unsigned long long result;
}
if(sub)
result=(unsigned long long)dest-(unsigned long long)src;
else
result=(unsigned long long)dest+(unsigned long long)src;
ZF=((unsigned long)result==0);
SF=sign32(result);
CF=result&0x100000000ULL;
OF=CFˆSFˆsign32(dest)ˆsign32(src);
dest=result;
Digitaltechnik – Kapitel 7: Ein einfacher CISC-Prozessor 76