Whats is an MMU unit ?

[The_Editor]

Looks very similer to the  "Viper" series of accelerators.

[Ilwrath]

the socket was put there to make sure users wern't stuck with the wrong fpu if they were buying one later on instead of with the board.  

Yep.... I tend to agree, based on what I've seen on other 68030 cards.

I think the MMU label on that socket is a mislabel. (It happens.... more often than you'd think!)

[whabang]

Rob wrote:
by the way, try running showconfig in tools, that should tell you if
you have an MMU or not.

That doesn't matter.
Most EC030's have a more or less faulty MMU that show up in showconfig. ( certain series of this CPU apparently had a functional MMU aswell. They were just standard 030's relabeled as there was a higher demand for EC030's at the time )

[Rob]

If you do have an MMU, Thomas Richter's MMU library is worth
looking at .


The Sinclar ZX Spectrum emulator ASP uses it to emulate the memory
bank switching features of the later 128K models.  Something not
possible with other Spectrum emulators for the Amiga.

[Temal]

Hmm... I had one of those MTec 1230-cards. It has one socket for
PGA-fpu (68882) AND also a socket for PLCC-fpu (68881). But you
can´t use both at the same time...

So its probably a mislabeled 68881 socket then.

[jaokim]

The MMU features will also let you use some more advanced features in emulators. Outside of that, though, it's of little performance gain.

An MMU is required if you want Linux. Maybe there's some kernels that doesn't require it, but the ones Iv'e seen require one.

And, don't know if it's stated elsewhere, but the MMU basically just takes care of addressing addresses to other addresses. Instead of doing it in software. Atleast that's what I've been told.

So a patch to the syscall AllocMem would introduce VMM to AOS... I think, basically?  :-?