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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: bigmac on March 17, 2008, 05:24:01 AM
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Hi! above card ran ok in 4000T finally. I removed card to reformat harddrive using 68040 to install os 3.1 and now no memory is showing.the board and cpu show up as an 060 using the cpu command but no memory am I missing something?
I can excess the phase5 bios but something is not right I cleaned the ram sockets and chip teeth with isophrol and still no joy the only thing I can think of is that I changed the ram settings in the bios but no matter what I do I cant it to show its 128meg ram on workbench any help would be greatly appreciated thanks in advance guys.
cheers :crazy:
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bumpity bumpity.
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Seems liek you need to send it to JJB at AmigaCenter.
Or you can try to resolder each component (mainly the 68k).
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Have you looked closely @ the edge of the 060 CPU?
Does it appear to be sitting square to the CPU socket?
Support the card & look at gently pushing down on the 060 CPU to make sure it`s seated squarely & correctly.
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Also look at the plastic accelerator spacers. They are the right size?
Some people don't care to remove the original-A3640 spacers when installing a CS board, and the PPC spacers are smaller than the originals!
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Thanks guys still no joy looks like a trip to the amiga centre in France hopefully it can be revived. I,ll let you know the outcome.Thanks for your help.
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Gah! ...Best of luck mate! :pint:
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Let us know what the problem was. This seems to be a common problem with the CSPPC. I hope mine never does it. Unless of course in fixing in Amiga Centre can increase the RAM capacity :-D
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Hi! sent it over to the Amiga centre should arrive tomorrow
hope he can repair it. I dont think its too serious must find some original spacers too that will fit a 4000T as this may have something to do with the problem as the ones holding it in place were slightly to long any way as I said I hope he can wave his magic wand and revive it.
cheers
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Should've saved my spacers for you! :-) I put mine in a box when I got the CSPPC, because I didn't need them in my A3000UX. That box hasn't been seen since!
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AMC258 wrote:
Let us know what the problem was. This seems to be a common problem with the CSPPC. I hope mine never does it. Unless of course in fixing in Amiga Centre can increase the RAM capacity :-D
That sounds like a doable project for some genius Amiga user/owner! I wonder what the limitation is that keeps the CSPPC from being able to use SIMMs greater than 128mb? The Blizzard board can take 256mb SIMM, or am I wrong and does the Blizzard board have 128mb on the accelerator and another 128mb on the SCSI module? I have never had one, or even seen one.
All said and done, it should be possible for the right person to modify the CSPPC to recognize more than 128mb. Yes? or No? :idea:
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It's most likely a limitation of the RAM controller and not really feasible to do.
I'm guessing what would be easier would be if someone knew the pinout of the expansion connector, and building a RAM card for it.
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AMC258 wrote:
It's most likely a limitation of the RAM controller and not really feasible to do.
I'm guessing what would be easier would be if someone knew the pinout of the expansion connector, and building a RAM card for it.
You mean the expansion connector that the CyberVision uses?
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Yep! I've thought for a long time about building a RAM card for it, but, well, if you saw all the projects I am already in the middle of... :crazy:
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Thats the exact same problem mine is having, is your ppc side working?
Maybe its a late y2k bug ^^
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AMC258 wrote:
Yep! I've thought for a long time about building a RAM card for it, but, well, if you saw all the projects I am already in the middle of... :crazy:
I have 2 CyberVision cards occupying that connector. How does the Blizzard card recognize 256mb?
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l think blizzard ppc card can have max of 256 meg of ram ie
2 X 128 meg 72 simms edo mine has 2X 64 megs at the moment.
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My understanding is that the Blizzard accesses ram on a 32 bit bus so it can see (2) x 128MB or 256MB total. The Cyberstorm PPC accesses memory on a 64 bit bus and can only see 128MB maximum. This has been discussed before and accessing more memory on either card simply isn't possible with out a major redesign/rework of the hardware and the needed information isn't even available anymore.
-Jeff
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Hi! all, just had a reply from Amiga Centre France and not good news at all. The card has "memory Bug" whatever that means Jean got it to recognise one 16 meg simm but it wont recognise its original memory he checked that out too and its fine running on one of his ppc cards so not good news at all I was wondering if a reflash might help its about the only thing that I hav,nt tried or perhaps a proggie that will recognise and install the ram who knows any ideas?
cheers
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yes, the cyberstorm does use a 64bit _data_ path to the ram, and yes the blizzard ppc does use a _32bit_ datapath, hence memory needs to be in pairs, but is faster on the cyberstorm, but nothing to do with the memory sizing.
the problem is that the A3000/A4000 only have a 128Mb "hole" in the system's memory layout of the 4Gb 32bit _address_ range set aside for CPU local bus devices.
the rest of the 32bit range is set aside for zorro3 devices. each slot maxing out at 512Mb assignable address range, giving you a max of 7 slots with full system autoconfig and DMA. the lower 512Mb is taken up with Rom space, zorro2 space, motherboard devices, and the 128Mb CPU Slot....
The A1200 doesn't have this Zorro3 overhead, or the CPU slot limit. hence the greater than 128Mb ability.
if you could remap the Zorro3 space on the bigbox machines to leave the top 1Gb free, and remap the CPU slot to that upper 1Gb, i don't see any reason why CPU boards wouldn't be able to be re-flashed to take four 64Mb/128Mb Simms for 256/512Mb ram.
sounds easy in theory doesn't it? ;)
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you've 1 dead chip on the card, that's all and sad..
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CLS2086 wrote:
you've 1 dead chip on the card, that's all and sad..
Er.....& JJB couldnt see this?