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07 November 2012, 21:52
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#1 |
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Registered User
Join Date: Apr 2007
Location: Belgrade
Posts: 567
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alfapower RAM upgrade
I'm trying to upgrade RAM from 2 to 4 Mb using 4 ZIP chips. unfortunately it doesn't work. new ones are 80ns, while old are 60ns, could that be the problem?
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07 November 2012, 22:45
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#2 |
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Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
Posts: 2,827
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yes could be 80ns is a bit slow,have you tried amibay?
are you mixing them,does any of the ram show in the system? |
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07 November 2012, 23:15
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#3 |
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Registered User
Join Date: Apr 2007
Location: Belgrade
Posts: 567
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I am trying to mix them, but bank2 just won't work. 80ns also work fine in bank1. tried cleaning the contacts, didn't help.
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08 November 2012, 00:03
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#4 |
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Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
Posts: 2,827
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it looks like it trys to run at 60ns with 80ns installed.but the 80ns work ok on ther own?
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08 November 2012, 08:10
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#5 |
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Registered User
Join Date: Apr 2007
Location: Belgrade
Posts: 567
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yeah, they do.
I also have some in A3000, cant remember what speed. |
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08 November 2012, 09:34
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#6 |
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Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
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there 60ns or 70ns in an a3000.
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11 November 2012, 14:56
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#7 |
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Registered User
Join Date: Oct 2010
Location: Germany
Posts: 20
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Hi,
maybe the power-supply is not strong enough to power the extra RAM. Does the AlfaPower get its power by an extra power-supply or does it drag the power from the Amiga? In case you power it via the Amiga, disconnect all the not-needed power draining extras like turbo-boards and internal mem-expansions and - of course - external floppy-drives. CU, A500man |
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11 November 2012, 15:00
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#8 |
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Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
Posts: 2,827
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its mem expansion for the 1200.and doesent require alot of power.
also it looks like a memory speed problem where two types of memory are trying to run at the speed of the fastest ones. |
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11 November 2012, 18:58
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#9 |
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Registered User
Join Date: Apr 2007
Location: Belgrade
Posts: 567
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its using power from A500+ I've tried it without hdd, but no change.
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11 November 2012, 20:09
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#10 | |
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Registered User
Join Date: Apr 2011
Location: birmingham
Age: 55
Posts: 2,827
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Quote:
hmm,im a bit confused now actually  do you mean the alfapower ram expansion for the 500+ or the one made for the 1200? if its the one for the 500 can you post some pics of the board please. |
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