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09 November 2010, 05:16
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#1 |
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Registered User
Join Date: Oct 2009
Location: Oswego, IL
Posts: 125
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Software Failure on boot A500+
I recently bought an A500+ but it is having a random problem, upon power on about half of the time I get a Software Failure Error, press left mouse button to continue. If I press then a get my boot screen and then works fine. This happens about half of the time. Any thoughts? I reseated all the chips, battery had been removed there is some corrosion..
thanks PD: its an Amiga 500+ with 3.1 rom |
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09 November 2010, 05:44
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#2 |
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Registered User
Join Date: Dec 2009
Location: West Australia
Age: 47
Posts: 210
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Is it a genuine 3.1 ROM, or an erasable/UV EEPROM?
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09 November 2010, 05:51
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#3 | |
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Registered User
Join Date: Oct 2009
Location: Oswego, IL
Posts: 125
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Its an erasable one, but tried with 3 different roms same issue
Quote:
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09 November 2010, 08:15
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#4 |
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Registered User
Join Date: Apr 2007
Location: Belgrade
Posts: 567
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I have had similar problem on ALL A500 (haven't tried on A500+). and it was due to this:
http://eab.abime.net/showpost.php?p=...&postcount=322 |
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09 November 2010, 09:32
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#5 |
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Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,468
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More likely to be a speed rating issue? What speed rating where your EPROMS?
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09 November 2010, 14:44
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#6 |
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Registered User
Join Date: Oct 2009
Location: Oswego, IL
Posts: 125
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they are 120 speed
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10 November 2010, 01:20
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#7 |
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Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,468
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I think that is ok for an A500 and probably A1200 too. I've never bought anything less than 100ns. Pretty sure that 150ns is not acceptable for A1200.
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10 November 2010, 05:01
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#8 |
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Registered User
Join Date: Oct 2009
Location: Oswego, IL
Posts: 125
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It was the rom, replaced with an original 2.04 and works great. Will try buying some -100 chips
thanks |
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10 November 2010, 08:51
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#9 |
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Registered User
Join Date: Apr 2007
Location: Belgrade
Posts: 567
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dammit read the thread I linked to.
2.04 also worked in my A500 but 3.1 wouldn't (not even original maskrom). you need to solder that resistor pack! |
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