Genesis Emulation Reached Its Peak?

[Robster]

Bah... I've never gone and got pissed with anyone from this scene :angry:

ZJ, if you feel the urge to pop over to Christchurch NZ, give me a yell!

Anyway, DrZ80 uses between about 6 and 20 instructions per emulated Z80 instruction. The instructions on the real Z80 took between 3 and 12 or so cycles. So emulating the 3.8MHz Z80 should take between 5 and 10 ARM MHz. It's not too bad

However, DrZ80 is fast because it cuts corners, and it's the cut corners that are causing it not to work with fGen32 at the moment. As we add extra stuff to Z80 to make it work, we are unavoidably making it slower.

Still, it will be less than 20MHz, so the effect shouldn't be tooooo noticeable.

 

[EvilDragon]

Still enough for most RPGs

 

[ZardozJones]

Robster: I'll almost certainly be on the south island around xmas time (for a short holiday) - so I'll give you a shout for a booze up.


Axeman: Man I miss the good ole drunken newport piss ups - I'll give you a shout next time I'm back

 

[mr.spiv]

Robster: I'll almost certainly be on the south island around xmas time (for a short holiday) - so I'll give you a shout for a booze up.


Axeman: Man I miss the good ole drunken newport piss ups - I'll give you a shout next time I'm back

Dang.. ZJ You never then showed up here even if you were soooo close :blink:

 

[ZardozJones]

Mr Spiv: I'm really sorry, but didn't have time to catch that damn seacat - I'm really gutted about that - but I'm sure next time I'm in se (coz it's soo hot here in oz - I guess my summer hols will be in se) i'll pop over to booze with ya!!

 

[Swiss_Cheesespam]

oh you craaazy kiwis

 

[fdave]

Anyway, DrZ80 uses between about 6 and 20 instructions per emulated Z80 instruction. The instructions on the real Z80 took between 3 and 12 or so cycles. So emulating the 3.8MHz Z80 should take between 5 and 10 ARM MHz. It's not too bad

However, DrZ80 is fast because it cuts corners, and it's the cut corners that are causing it not to work with fGen32 at the moment. As we add extra stuff to Z80 to make it work, we are unavoidably making it slower.

Wow, if so that is very impressive!