On Jun 5, 6:20 pm, PeterH <[email protected]> wrote:
> On Jun 5, 2009, at 2:59 PM, DLC wrote:
>
> > I purchased a 256 MB PC133 SoDIMM card for ramping up the RAM amount,
> > installed it-the Lombard still runs fine, but now reports a total
> > amount of physical memory as 256Mb (the unit is running OS 9.2.2,
> > btw). So... my question is:
> > Is there a certain RAM limit in OS 9 on this unit, or is there a
> > certain design of RAM necessary for the unit to properly report the
> > correct amount (for ex., does the 256Mb stick need to be double-
> > sided?)?
>
> Lombard is a 'tweener ... it is the first "New World" PowerBook, but
> it does not have all the features of the true "New World" PowerBook,
> the Pismo.
>
> In the Pismo, the CPU card was extensively reworked, and it accepts
> one or two SDRAM sticks, and those many be any of "high profile" or
> "low profile", although those must still be "low density".
>
> The Lombard, and the earlier Wallstreet, accepts one "low profile"
> and one "low profile or "high profile" SDRAM sticks.
>
> If you are sure your sticks are "low density", then a Pismo will
> support a maximum of 1024 MB, whereas the Lombard (any variation) and
> Wallstreet (any variation) will accept a maximum of 512 MB.
>
> OS 9 will not support more than 768 MB (according to my failing
> memory), but OS X will support the full 1 GB, on the Pismo and later
> PBs.
Hi Peter,
Thanks for the chime-in and the information. SO, possibly, the 256Mb
stick that I have (which is installed in slot 2, the more accessible
slot) is a high density stick, forcing the unit to read only 1/2 of
the actual RAM?
Thanks,
Dana
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