AmigaActive (2058/2059)

From:Andrew Crowe
Date:31 Aug 2000 at 23:53:26
Subject:Re: Amiga PPC UAE

Hi Everybody,

>>> Yes, but Basilisk II uses 68K emulation on a P133 and uses the CPU
>>> natively on the 030/25. The point is that a P133 is sufficiently
>>> fast that it's easily capable of emulating a fairly fast 68K
>>> provided it doesn't have to emulate the custom chipset as well.
>
>> Ah, but does your 030 have a gfx card? It may simply be that
>> Basilisk seems faster because it has much faster gfx access.
>
> Valid point - but I was taking that into account.
> On my '030 I'm using 16-colour with a custom video driver which only
> converts an eighth of the screen per frame.

Eww, nice jerky mouse pointer eh? :)

Anyway, don't forget the slow amiga IDE interface too, that'd slow
programs down, especially if you're using fusion with virtual memory.

> I suppose I should do some real benchmarks on my '030/25, '030/50,
> and the 486/66, P133 and K6-II/500 at work - could make interesting
> reading - especially for comparison with the JIT stuff if it ever
> filters through to Basilisk.

Although running benchmark programs don't always give an accurate
picture of speed, unless you ment a more real-world test, like timing
an application or sommin :)

>> Heck, WinUAE is about 10x slower (cpu wise) then my 040 amiga,
>> but scrolling a large 256 colour picture in multiview is much
>> faster in UAE? why? Because winuae has the PC's GFX card, while my
>> A1200 is stuck with AGA :)
>
> (BTW, are you
> talking about WinUAE with virtual P96 emulation?

Yep

> If so, the virtual
> driver might well be using native x86 code to do the blitting - in
> which case it's not a fair comparison.

Exactly :)

See ya :)



Manta Soft - Amiga programming & webpage designing
http://mantasoft.aio.co.uk/ ICQ: 21829166
Homepage updated 22/05/00 - New game: Pictris released
- ------------------- Quote of the day: -------------------- -
Olivia Newton-John was 29 years old when she played teenager Sandy in
Grease
(1978). Stockard Channing, who played Rizzo, was 32.
--The Miscellanea Digest

Quote carefully and read all ADMIN:README mails