On 02/08/2011 06:19 PM, marco oriani wrote:
I've bits of a hard disk (mfm) interface for apple II. I got the apple card, the MFM drive, internal cables, external cable linking the drive to the apple but missing the case. I got three wires on the electronic board which should go together with the drive below an image of the system: http://www.digibarn.com/history/05-08-21-OpenHouse/DSC07217.JPG anyone has any idea if I have to supply voltage to the electronics for the drive?
If it's an MFM drive, it likely requires +5 and +12VDC. The current requirements on some of the older full-height units can be substantial, so make sure you power it with something reasonably hefty. A PC power supply will probably do the trick.
Not following the rest of your description, particularly to the part about the three wires. Can you post pictures of what you actually have there?