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pioneer · 17 March 2018, 15:08

I have a A2090a in an Amiga 2000. I wanted to see if I could get a very old (1988) 5-1/4-in NEC MFM hard drive to work. I did mount the drive with the "prep" command and formatted and copied workbench to the drive. Everything looked good. "Prep" seems to save the HD settings in the autoboot EPROM. When I rebooted, the amiga screen would flash different shades of grey like it always does. Then it settled on a grey screen. There is no disk activity from the hard drive or floppy drive. This looks like a lockup. When I disconnect the drive and try booting without it, I get the same thing. I put a jumper on J4 to disable the autoboot eprom. That doesn't make any difference. It looks like it's permanently locked up. Any ideas? Is there some way to unlock the card? When I take the A2090a out, the Amiga boots normally. I have a OS 2.0 ROM installed.

17 March 2018, 15:08	#1
pioneer Registered User Join Date: Mar 2018 Location: Salt Lake City, Utah Posts: 2	Amiga A2090a SCSI card lock up I have a A2090a in an Amiga 2000. I wanted to see if I could get a very old (1988) 5-1/4-in NEC MFM hard drive to work. I did mount the drive with the "prep" command and formatted and copied workbench to the drive. Everything looked good. "Prep" seems to save the HD settings in the autoboot EPROM. When I rebooted, the amiga screen would flash different shades of grey like it always does. Then it settled on a grey screen. There is no disk activity from the hard drive or floppy drive. This looks like a lockup. When I disconnect the drive and try booting without it, I get the same thing. I put a jumper on J4 to disable the autoboot eprom. That doesn't make any difference. It looks like it's permanently locked up. Any ideas? Is there some way to unlock the card? When I take the A2090a out, the Amiga boots normally. I have a OS 2.0 ROM installed.