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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Revener on March 24, 2003, 02:09:10 PM
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I got some old RAM for free (two sticks of 72pin @ 16mb) from a friend when he throwed away his old P100.
Where there many kinds of similar 72 pin RAM made or can I safely try them out in my old Blizzard IV 030 card?
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Hi,
As far as pin cinfiguration goes, all 72-pin SIMMS are pretty much interchangable. There shouldn't be any risk of electrical damage, apart from any ESD coming from yourself ;-)
As for SIMM differences, spart from the obvious single/double sided variants, they also differ in access times, paging/non-paging modes and width. Those with parity checking are generally 36-bit, those without 32. Most amiga accelerators simply ignore the 4-bit parity.
These differences can cause incomatibilities but the worst you can expect is probably that they don't get recognised, 'random' crashes, or even a red screen at startup (RAM test error). No frying circuits and blue smoke though :-)
To answer you question, you should be able to safely test them. Blizzard cards seem to be more tolerant of these 'differences' than other accelerators. I use a pair of ex-PC double sided 32Mb 60ns EDO SIMMs (36-bit)on my BlizzPPC and they work just fine.
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Ok! going to test them right now then, just wanted to be really shure first ;-)
thx!