From: Si Owen <[EMAIL PROTECTED]> > Aley Keprt wrote: > > Well, I have used another Z80 CPU emulator in my SAA1099 player. > > It is not 100%, but it uses very efficient algo's for computing flags. > > And it is platform independent. This may help. > > Sounds good - I'd come across the look-up tables in another Z80 emulator and > wondered about using the same thing - it'd be faster than the current > comparing, ORing and shifting. Might be worth giving it a try, but making > sure the table includes the weird undocumented flags that the current > version does. > > Si
Don't forget -- the cache comes into play here a lot, so tables aren't necessarily as efficient as you might think. PROFILE YOUR RESULTS!!! Simon (NSFMSFT)
