warwick@oak.math.ucla.edu (Warwick Daw) (05/02/90)
In article <7997@goofy.Apple.COM> dwb@sticks.apple.com (David Berry) writes: > When the MacOS is run in 24-bit mode (currently the default) the ROM > starts at 8 Meg and the slots at 9 Meg. Thus, you are limited to 8 > Meg of memory. Since A/UX runs the MacOS in 32-bit mode, the lowest > non-ram address is the ROM at 0x40800000. At least in theory we could > create a mac with as much as 4 gazillion bytes of memory. Currently > we have a limit of 16 meg. This raises a question I had thought I had found the answer to yesterday. According to my owner's manual, the II's and the SE/30 can have up to 128MB installed in them (when 16MB simms become available). Now, if I were to install 16MB simms (or the available 4MB simms), could I get the MacOS to recognize the additional memory? The question is purely hypothetical for me, since I don't even have the spare cash to get four 1MB simms right now. I'm just curious. Warwick Daw (warwick@math.ucla.edu)
dwb@sticks.apple.com (David Berry) (05/04/90)
In article <2670@sunset.MATH.UCLA.EDU> warwick@math.ucla.edu (Warwick Daw) writes: >This raises a question I had thought I had found the answer to yesterday. >According to my owner's manual, the II's and the SE/30 can have up to >128MB installed in them (when 16MB simms become available). Now, if I were >to install 16MB simms (or the available 4MB simms), could I get the MacOS >to recognize the additional memory? The MacOS would currently recognize them as 1 Meg simms. Whether that's a yes or a no... In any case, you would only be allowed to use 8 Meg of it. Under A/UX, it would all be used, although the Mac partition would still be limited to 16 meg. David W. Berry A/UX Toolbox Engineer dwb@apple.com