Buddha Flash Phoenix & CF

hese · 04 November 2009, 19:45

I've read it's not recommended to power 2.5" hard disks via the 44 pin connector. What about compact flash cards? Do they also need to be powered using the floppy power connector?

prowler · 04 November 2009, 20:01

Hi hese,

I don't know where you heard that advice, but it sounds a bit like extreme caution to me.

No separate connection to the supply is necessary with a 44-pin IDE interface.

It's possible that you are confusing the 44-pin interface with the 40-pin situation where a CF card or hard drive will sometimes work by drawing supply voltage from one of the data lines, and it is certainly not recommended to leave a device connected like this without a separate power connection, because you can't be sure whether this will cause an overload at some point in the data circuit.

hese · 05 November 2009, 07:37

Quote:

Originally Posted by prowler

I don't know where you heard that advice, but it sounds a bit like extreme caution to me.

No separate connection to the supply is necessary with a 44-pin IDE interface.

I read it from amiga.resource.cx.

Quote:

2.5" hard disks can not be powered by the board due to thin PCB tracks - making them thick enough for that purpose would have been resulted in a more expensive multilayer board
* it is necessary to provide power to the board via floppy power connector

alexh · 05 November 2009, 09:03

I wonder who wrote that? If it was taken from the Manual or something?

Amiga's and their peripherals were designed to supply power to drives via 44-pin connectors. Why else would you have a 44-pin connector?!

I cannot find any reference to it except on the Amiga Hardware Database.

http://amiga.resource.cx/exp/buddhaphoenix

Chain · 05 November 2009, 13:52

CF card needs only 10-60mA, which is far less than regular (mechanic) drive (which consumes 300mA and more)
BUT buddha have extra FDD-power (molex) connector for that purpose, so you feed it not thru zorro but directly from psu, dont worry

04 November 2009, 19:45	#1
hese Registered User Join Date: Sep 2008 Location: Somewhere Posts: 223	Buddha Flash Phoenix & CF I've read it's not recommended to power 2.5" hard disks via the 44 pin connector. What about compact flash cards? Do they also need to be powered using the floppy power connector?

05 November 2009, 09:03	#4
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,354	I wonder who wrote that? If it was taken from the Manual or something? Amiga's and their peripherals were designed to supply power to drives via 44-pin connectors. Why else would you have a 44-pin connector?! I cannot find any reference to it except on the Amiga Hardware Database. http://amiga.resource.cx/exp/buddhaphoenix Last edited by alexh; 05 November 2009 at 09:08.

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04 November 2009, 20:01	#2
prowler Global Moderator Join Date: Aug 2008 Location: Sidcup, England Posts: 10,300	Hi hese, I don't know where you heard that advice, but it sounds a bit like extreme caution to me. No separate connection to the supply is necessary with a 44-pin IDE interface. It's possible that you are confusing the 44-pin interface with the 40-pin situation where a CF card or hard drive will sometimes work by drawing supply voltage from one of the data lines, and it is certainly not recommended to leave a device connected like this without a separate power connection, because you can't be sure whether this will cause an overload at some point in the data circuit.

05 November 2009, 13:52	#5
Chain A-Collector, repairments Join Date: Jul 2001 Location: Czech Rep. Age: 50 Posts: 1,536	CF card needs only 10-60mA, which is far less than regular (mechanic) drive (which consumes 300mA and more) BUT buddha have extra FDD-power (molex) connector for that purpose, so you feed it not thru zorro but directly from psu, dont worry

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