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Author Topic: Power for A2000 Hard drive  (Read 1525 times)

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Offline Ral-Clan

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Re: Power for A2000 Hard drive
« on: February 28, 2012, 09:44:07 PM »
I can't speak from direct experience with the GVP card, but I have used an A2091 SCSI card (Zorro II) in the past in an Amiga 2000.  I read several places not to power the hard drive from the power adapter on the card itself, but to use a connector coming from the computer's power supply.

The reasoning was that the power supplied over the Zorro bus was too weak for the later hard drives.  It was fine for the intial 40-100MB hard drives but there was not enough juice to reliably power the models that came later.
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Offline Ral-Clan

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Re: Power for A2000 Hard drive
« Reply #1 on: February 28, 2012, 09:57:59 PM »
Quote from: dougal;681812
I heard the same thing about the A2091 but not about the GVP.

Well, I think it would be the same for the GVP as it's probably not the card that determines the amps, but the specifications (and limits) of the Zorro bus.  That's just a guess though.

Quote
I am using quite an old 1GB Scsi drive on the GVP. It seems to be working fine being powered by the card but i might consider powering it from the PSU again if it could cause problems.

Well, the 1GB drive would be considered a "late/modern" drive by A2000 standards, but if it's working fine for you then great.  Probably also has to do with how much power other devices in the A2000 are sucking.
« Last Edit: February 29, 2012, 01:21:57 AM by ral-clan »
Music I've made using Amigas and other retro-instruments: http://theovoids.bandcamp.com