A2090 SCSI Card

[weGuru]

I have an Amiga 1200 with a Winner Zorro Bussboard. Will the A2090 Card work with the Winner?

[Amiga4k]

You cannot have partitions larger than 256MB without a patch. Source the BigBook of Amiga. It is a SCSI or MFM drive card, and will work with proper installation. It is not auto-boot, but will accept a drive partition setup to auto-boot.

[alenppc]

The A2090 was a piece of junk when it was originally released, today it can be only used as a cheap source of second-hand Z80 CPUs... ;-)

Other than that it has an XT (mfm) disk controller and a so called "SCSI" (but not a real SCSI) controller interface. The interface never fully supported SCSI and cannot be made to work with any modern (and by 'modern' I mean anything dating from the late 80s till today) SCSI devices.

The card has issues when you attempt to use it with a 020 or higher cpu, does not support autobooting, unless it is a "A2090A" version which had a booting hack. However it is doubtful if this card can boot or even work under 2.0+.

If I were you I would look for a real SCSI controller (such as the A2091).

[Zac67]

I've got an A2090A somewhere or other and had been playing with it in an A2k and A3k some years ago.
It's an ST506 (MFM) controller and SCSI host adapter in one (XT is something completely different, like in the A590). It has no problems running with an '030 but has no way of coping with 32 bit fast RAM.

I've successfully tested it on my A3k with
Autoboot off - NoFastMem - BindDrivers - NoFastMem
Haven't tested it with larger drives (>200 MB) though or with something like a CDROM.

It predates the RDB standard and is completely incompatible to it. The partitioning software is pretty nightmarish, so I wouldn't even consider it for an otherwise unexpanded A2k... :-D