Max RAM for Pegasos II ?
  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    stephen_robinson
    Posts: 746 from 2007/4/22
    Well I've tested it and the 2 GB ECC Reg memory stick didn't work on my 2B5 revision Pegasos II.

    http://www.ebay.co.uk/itm/261001488161

    Type 2GB HP 373030-851 ECC REG PC3200R DDR 400 184-pin

    Quote:


    >PegasosII Boot Strap (c) 2002-2005 bplan GmbH (BUILD 20051216202806)
    Running on CPU PVR:80020101
    Enable L1 ICache... Done.
    Clean/Flush Block enabled
    Reading ICS9248 : 84EFFF3FFFFF Done.
    Setting Front Side Bus to 133MHz... Done.
    Memory changed since last boot
    Configuring Memory
    Error Detecting Module Density
    Memory Config FAILED
    Configuring PCI0... Done.
    Configuring PCI1... Done.
    Configuring ETH... Done.
    Releasing IDE reset ... Done.
    Configuring Legacy Devices
    Initializing KBD...00000032 FAILED.
    Testing 00000000 Bytes, Pass: 00000000 Failed: 00000000
    RAM TEST (fill random)...


    Entering IKARUS low level console





    :-(

    [ Edited by stephen_robinson 18.04.2012 - 19:23 ]
  • »17.04.12 - 17:38
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  • Yokemate of Keyboards
    Yokemate of Keyboards
    magnetic
    Posts: 2129 from 2003/3/1
    From: Los Angeles
    Hey Trevor thanks for the info can I ask a couple more questions

    1. What board rev is your peg2?

    2. What version OF?

    3. What brand and model ram?

    Thanks.. and yes I know 3 isnt a couple :)
    Pegasos 2 Rev 2B3 w/ Freescale 7447 "G4" @ 1ghz / 1gb Nanya Ram
    Quad Boot: MorphOS 2.7 | Amiga OS4.1 U4 | Ubuntu PPC GNU/Linux | OS X 10.4
  • »18.04.12 - 08:52
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    SoundSquare
    Posts: 1213 from 2004/12/1
    From: Paris, France
    Quote:

    For what its worth, I've been running 2 x 1GB RAM sticks in one of my Peg IIs for several years now. OK MorphOS only sees 1.5Gb but AFAIAA I've had no real problems with stability or performance.


    By the time i had a Peg2 i was also running with 2gb of ram (2x1, same modules), and everything was working right until i ran Gentoo and made a lot of compilation, then i had errors. With 1gb sources compilation process was ok but it was always crashing with 2, even with the right options for >1gb ram in the kernel. A Debian linux PPC dev confirmed the issue to me at that time.
  • »18.04.12 - 09:21
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  • MorphOS Developer
    geit
    Posts: 1049 from 2004/9/23
    SoundSquare,
    Quote:

    By the time i had a Peg2 i was also running with 2gb of ram (2x1, same modules), and everything was working right until i ran Gentoo and made a lot of compilation, then i had errors. With 1gb sources compilation process was ok but it was always crashing with 2, even with the right options for >1gb ram in the kernel. A Debian linux PPC dev confirmed the issue to me at that time.


    That is exactly the reason why 2GB are not working. It may look like it is working, but in the background you get broken bits, write false data to hard drive and when you experience any problems months later anything is the problem, but not the memory. Of course the memtest works fine, as it only reports broken memory and not time to time errors happening while reading using DMA transfers.

    Yes, there is a rare bunch of peg2 which is told to work with 2 GB. When I would get such a system, I would simply remove the second bar, just to be sure and for the savty of my data. 1GB is far enough for MorphOS.

    I have no idea if someone tested those 2GB bars recently became available. If these bars work and you only use one slot, then I would consider it to be save. Two bars of any type at the same time is a random set dataloss timebomb.

    Geit
  • »18.04.12 - 11:29
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  • Acolyte of the Butterfly
    Acolyte of the Butterfly
    zhulien
    Posts: 118 from 2004/8/21
    not sure if there is a SATA card available that works with MorphOS, but if so, you could most likely make use of the i-RAM storage... which is RAM but used as a storage device from the OS's point of view... http://techreport.com/articles.x/9312

    they also make 5.25" bay versions... http://www.ebay.com.au/itm/GIGABYTE-i-RAM-iRAM-BOX-GC-RAMDISK-FASTEST-SSD-/190666520774?pt=LH_DefaultDomain_0&hash=item2c649c38c6, so you could put several of these in pending a working SATA card for MorphOS giving you many GBs of RAM. I had tried this using an IDE to Sata adapter that I also use in my XBox.

    some videos:
    http://www.youtube.com/watch?v=b4jFpIt6bw8


    [ Edited by zhulien 02.07.2012 - 13:13 ]
  • »19.04.12 - 13:43
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  • Acolyte of the Butterfly
    Acolyte of the Butterfly
    TrevorDick
    Posts: 130 from 2005/10/12
    From: Wellington
    @Magnetic

    I'm travelling in Europe at the moment and will provide details of my 1GB ram sticks when I get back home.

    TrevorD
  • »19.04.12 - 22:09
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