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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: desantii on November 12, 2009, 03:42:46 PM

Title: Turn on MMU on an 030?
Post by: desantii on November 12, 2009, 03:42:46 PM

According to Sysinfo the MMU is off an my 3000, is there any benefit os turning it on? If I use a 3640 card on the same macine it says the MMU is on, are there differences between the 030 and 040 as to why one is on and the otehr isn't?
 
thanks

Title: Re: Turn on MMU on an 030?
Post by: AndyFC on November 12, 2009, 04:04:41 PM

One advantage is that with an MMU you can use Virtual Memory programmes (or at least the ones I remember reading reviews of).

Title: Re: Turn on MMU on an 030?
Post by: save2600 on November 12, 2009, 04:13:56 PM

MMU enabled systems allow you to place Kickstart in 32-bit RAM. Results in a noticeable increase in overall system speed.

Title: Re: Turn on MMU on an 030?
Post by: desantii on November 12, 2009, 04:19:37 PM

The question then is how to turn it on?

Title: Re: Turn on MMU on an 030?
Post by: Golem!dk on November 12, 2009, 04:25:17 PM

Quote from: desantii;529303

The question then is how to turn it on?

Simple, you run something that actually requires it.

Title: Re: Turn on MMU on an 030?
Post by: efrenmgp on November 12, 2009, 06:23:49 PM

Try MMULib.lha from Aminet (util/libs). It's a complete set of libraries and utilities for using your processor's MMU.

Regards,
Efren

Title: Re: Turn on MMU on an 030?
Post by: AmigaPixel on November 12, 2009, 07:56:54 PM

Quote from: save2600;529302

MMU enabled systems allow you to place Kickstart in 32-bit RAM. Results in a noticeable increase in overall system speed.

interesting, I have a Derringer Platinum 030 which allows you to copy the Kickstart into 32bit Fast RAM. Would this be a result of the MMU?

Title: Re: Turn on MMU on an 030?
Post by: pyrre on November 12, 2009, 08:06:05 PM

Quote from: AmigaPixel;529324

interesting, I have a Derringer Platinum 030 which allows you to copy the Kickstart into 32bit Fast RAM. Would this be a result of the MMU?

I have a Derringer 030(50) myself... I have not tried copying the kickstart to ram. But my MMU is inactive...

Maybe i should try it out one day..

Title: Re: Turn on MMU on an 030?
Post by: utri007 on November 12, 2009, 08:20:47 PM

Are you sure that you actually have a mmu? 030 mmu is external chip, not build in like in 040 and 060

Title: Re: Turn on MMU on an 030?
Post by: zipper on November 12, 2009, 08:24:42 PM

That's 020 or 030EC.