[comp.sys.mac.misc] Help:SE and Mobius PMMU

sam@skybridge.SCL.CWRU.Edu (Sam Chan) (04/18/91)

Hello Netters,

   Have a few questions that I would like the sages of the Net to
answer. In about three weeks, I hope to purchase the 25MHz Mobius
030 2-Page display system for my 1986 SE.

   My work is basically DTP and graphic design. I need very fast
access and lots of memory (especially when I have scanned images
in the designs). According to Mobius, the accelerator/vid-card
can accommodate 4x1MB, 4x2MB and 4x4Mb simms. Would the SE w/the
new board access 8MB or 16MB w/o the PMMU? Would I be a fool if I
did not purchase the PMMU option and purchase 4x2MB simms
instead?

   From what I understand about the SE and system 7 w/ virtual
memory, it would not work. That is to say the SE could only
access a maximum of 16MB (onboard RAM plus VM combination or just
16MB RAM) because the ROM is not 32-bit clean and it canTt be
updated.  Therefore, if I purchase the PMMU option for the Mobius
030, I would be wasting my money. Is this correct?

   Is the 2MB simms only for the LC or Si? The ones from an ad in
MacUsers appears to have different fingers. Does anyone have
experiences with 2MB simms on the Mobius 030
accelerator/vid-card?

   Thanks in advance!

--
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