--- dquebbeman <[EMAIL PROTECTED]> wrote: > Gregg, > > I'm not sure what you mean by "AMU"... I just put > back the same part it came > with, which I assume is some kind of bypass gizmo. > It does seem like an odd > thing to do, but after a lot of struggle I came to > the conclusion that the > PMMU and the ZIP 100 were not compatible (!). But I > did keep the PMMU "just in case."
I dunno what "AMU" stands for, but some Mac II systems shipped with that in place of the "PMMU" chip which is the Paged Memory Management Unit, without which you can't have virtual memory. The PMMU function was integrated into the 68030 CPU. Daystar's upgrades for the Mac II plugged into the 68020 and the PMMU sockets, thus they do not require the control panel unless you want to enable the "Power Math" SANE call redirection functionality. (But for Macs where the original CPU remains in place, the control panel is required to enable the new CPU.) ===== "When you do things right, people won't be sure you've done anything at all." __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree -- Vintage Macs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Enter To Win A | -- Canon PowerShot Digital Cameras start at $299 | Free iBook! | Support Low End Mac <http://lowendmac.com/lists/support.html> Vintage Macs list info: <http://lowendmac.com/lists/vintagemacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/vintage.macs%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
