Re: Maximum memory and graphics options (plain text)

On Tue, Feb 28, 2017 at 09:42:33PM +0000, Larry Hynes wrote:
> Bryan Vyhmeister <[email protected]> wrote:
> > On Tue, Feb 28, 2017 at 05:57:20PM +0000, Peter Kay wrote:
> >> macppc is 32bit, is it limited to 2GB memory like FreeBSD 32bit
> >> powerpc? I have a dual core G5 with 4.5GB, and it's showing only 2GB
> >> and the wrong SPD information (it initially only showed 1GB, but that
> >> was because the slots hadn't been correctly filled).
> 
> > That appears to be the case. I have more than 4GB (I think 8.5GB) in my
> > PowerMac11,2 and it only recognizes 2GB. There are some issues with the
> > SATA controller as well that I have mentioned in threads a few months
> > back on this list. I purchased some more SATA controller hardware to see
> > what I can figure out but have not had time to work on it further.
> 
> I'm running 6.0 -release on an 11,2, and dmesg shows:
> 
> 	spdmem0 at mem0: 256MB DDR2 SDRAM non-parity PC2-4200CL4
> 	spdmem1 at mem0: 256MB DDR2 SDRAM non-parity PC2-4200CL4
> 	spdmem2 at mem0: 1GB DDR2 SDRAM non-parity PC2-4200CL4
> 	spdmem3 at mem0: 1GB DDR2 SDRAM non-parity PC2-4200CL5
> 
> so I was assuming that it was recognising - and making use of -
> 2.5GB. Is this not so?

Not necessarily. What does top(1) show if you add up the real and free
memory?

In my PowerMac7,3 I show:

spdmem0 at mem0: 128MB DDR SDRAM non-parity PC3200CL3.0
spdmem1 at mem0: 128MB DDR SDRAM non-parity PC3200CL3.0
spdmem2 at mem0: 256MB DDR SDRAM non-parity PC3200CL3.0
spdmem3 at mem0: 256MB DDR SDRAM non-parity PC3200CL3.0

I show almost 750MB in top(1) which is about right. With my
PowerMac11,2, I show:

spdmem0 at mem0: 2GB DDR2 SDRAM non-parity PC2-4200CL4
spdmem1 at mem0: 2GB DDR2 SDRAM non-parity PC2-4200CL4
spdmem2 at mem0: 2GB DDR2 SDRAM non-parity PC2-4200CL4
spdmem3 at mem0: 2GB DDR2 SDRAM non-parity PC2-4200CL4
spdmem4 at mem0: 1GB DDR2 SDRAM non-parity PC2-4200CL5
spdmem5 at mem0: 1GB DDR2 SDRAM non-parity PC2-4200CL5
spdmem6 at mem0: 1GB DDR2 SDRAM non-parity PC2-4200CL5
spdmem7 at mem0: 1GB DDR2 SDRAM non-parity PC2-4200CL5

I think top(1) only shows a total of 2GB between real and free memory
but the machine is off at the moment so I cannot verify due to the SATA
issues. If top(1) shows more than 2GB, I believe more is being utilized
but I could be wrong on that.

Bryan