Amiga.org
Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Matt_H on September 29, 2003, 08:31:37 PM
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I put in a nice new 64Mb SIMM from these guys (http://www.comtread.com/64edo72pinsi.html) and now my accelerator isn't working! I've even restored my original memory configuration (16Mb and 32Mb on the SCSI-Kit) and it's still not working.
There's going to be hell to pay for this dealer if the accelerator is damaged... :-x
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Somehow I doubt that those guys would take responsibility for damage
done to an obscure vintage-computer add-on ....
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Yeah, but I've got the right to complain, don't I?
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That ####ing sucks man! Have you checked the Blizzard memory jumper for 70/60ns ? (Thats if it has one, my Blizzard IV does)
If it's broken go and kick some ass!
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Sure, you can complain but, that isn't likely to help you. It's likely that when you purchased the item, you disclaimed thier liability. After all, YOU installed the item yourself which means it's plausible that you are at fault for failure of your equipment.
Also, it's possible that the laws of your locality provide that they are only responsible for what they sold you, not what you put it in.
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But if the RAM is dojjy then its their fault. Remember if it turns out the ram is ####e and they won't do anything; I like bricks and windows :)
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The memory jumper for 70/60ns doesn't exist on a blizzard 1260. There is a jumper for enable/disable the maprom.
Do the following things to check ypur problem:
First get the b1260 and scsi-kit out your A1200 and try to start you Amiga 1200.
If this working try to insert you b1260 without memory And if this working try your old simm and then your scsi-kit.
If it fails, find a friend to test your b1260. If the last option also fails then you have to sent it for repair.
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EDO memory is flakey in Blizzards, oempcworld.com
sell 64Mb FPM SIMM units for $15, I have one in
my 1260 and it works great.
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Best would probably be to install two identical FPM
units together.
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Yeh it's just if the computer requires matched pairs. Your acc should be okay.
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good to hear, that would've been expensive to replace
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Okay, things are working now, as long as I don't put any RAM on the SCSI-Kit. That means I've only got 64Mb, as opposed to the 96Mb I was hoping for.
Might a perfect match for the 64Mb chip work on the SCSI Kit?
Also, thanks for all the help everyone! :-)
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dont mix 60 and 70ns simms ... contact me and i can sell u some cheap...if u are interested...
i now have 256mb in my blizzard ppc :)
cheers
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Matt_H wrote:
Might a perfect match for the 64Mb chip work on the SCSI Kit?
My *theory* is that most problems related to the
SCSI kit are due to memory conflicts of some kind
(especially problems with overclocking the 1260
and non-working SCSI). I have 2 identical 64 meg
SIMMs to test my theory with as soon as (if) I get
a SCSI kit...I would *guess* that using matched
SIMMs is probably better.
Also, there appears to be a 45mhz oscillator on the
SCSI unit itself, does anybody here know exactly
what that controls? Perhaps changing the frequency
could help the SCSI unit to "sync" better with
an overclocked 1260...? (just taking a wild stab here:)
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dont mix 60 and 70ns simms
Maybe that's it. My new chip is 60ns, my old chips are unlabeled. The 16Mb is at least as old as 1997, the 32Mb I don't recall when I got, but 60ns SIMMs are a more recent invention, yes?
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There is normally a marking like "-60" or "-6" on the chips on a simm that indicates their speed. I.i. 70 ns would be "-7" or "-70"
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lempkee wrote:
dont mix 60 and 70ns simms ... contact me and i can sell u some cheap...if u are interested...
i now have 256mb in my blizzard ppc :)
cheers
How much is cheap? I have a matched pair of 32M 60ns EDO in my BlizzPPC and haven't been able to find hardlt anywhere that still sells them larger - the ones that did sold 3.3v SIMMS only...
If you got a matched pair of 64Ms 60ns I'd be interested to hear about it :-)
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When I bought a Blizzard 1260 card, I also got two 64 MB EDO SIMMs. They work perfectly together. I also own a Blizzard SCSI-kit
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Wow, that was a really nice experience!
It really felt like an thiller movie. Reading the first post, suspecting the worst. And then scrolling down things clear up, fortuately!
Ok, more ontopic. I bought two, single sided, SIMMs of 128Mb each a couple of years ago for an absolute bargain. Since I don't have a SCSI controller on my 1260 I only can use one of them. But it sure works great!!
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Hmmm... The old chips are 60ns, too. So I guess different speeds isn't the problem. I'll try fiddling around a bit more (maybe by freak coincidence I'm having those power problems when the 32Mb chip happens to be in).
If not, I'd better try to find a matching SIMM...