1.44M and 1.2M support?

[Exceter]

I bought this Seagate SCSI/Floppy controller on ebay. Does anyone know if it supports 1.44M and 1.2M floppy drives?

EDIT: https://www.ebay.com/itm/Seagate-ST...fUGsZxRSUo%3D&orig_cvip=true&nordt=true&rt=nc

 

[maxtherabbit]

DP8473 supports basically everything, including single density

 

[Exceter]

Where can I find information about hard drive support?

 

[Chuck(G)]

I'm not sure what you mean. Here's the user guide

 

[Exceter]

Thanks!

 

[Exceter]

Do you think it will work with the old Apple SCSI drives?

 

[Chuck(G)]

How old? The first Apple SCSI drives were a little strange, but if you're talking about later ones, it should be fine. I think the limit with the ST02 (unless someone has updated the BIOS) is about 1GB.

 

[Exceter]

I was asking because there are a lot of old apple SCSI drives on eBay. Staying under 1G is good to know! At the back of the card there is a footprint for what looks like a 50 pin SCSI header which I presume was intended for supporting external SCSI drives. Do you think it would work if I soldered in a header?

 

[maxtherabbit]

Yes, in fact I'd recommend that you do so you can have an easy way to terminate both sides of the bus. Otherwise you would need to populate the 3 SIP footprints with term pack resistors

 

[Exceter]

Are you saying that the card wouldn't work as it sits?

 

[maxtherabbit]

Are you saying that the card wouldn't work as it sits?

it may "work", but it would not be properly terminated as it sits as far as I can see

 

[Chuck(G)]

I was asking because there are a lot of old apple SCSI drives on eBay. Staying under 1G is good to know! At the back of the card there is a footprint for what looks like a 50 pin SCSI header which I presume was intended for supporting external SCSI drives. Do you think it would work if I soldered in a header?

Yes, that's what it's there for. The ST-02 came in at least two flavors. The first has pins for a DB25 "Apple SCSI" for an external connector, the second has pads for a 50-pin right-angle header. You clearly have the second type.

 

[Exceter]

Thanks! Now to see if I can find a replacement bracket that fits

 

[Exceter]

The closest I can find are these, I've ordered both from Mouser(DigiKey wanted a minimum order of 100) to be on the safe side:
https://www.mouser.com/ProductDetai...VFH4SHo0ei47vKxAsDRDwUzeBswbK7lbCpGHpAtI63yRH
https://www.mouser.com/ProductDetai...VFH4SHo0ei47vKxAsDRDwUzcXyjL3KhdppICol3wgmVsq

The manufacturer is Keystone Electronics and the manufacturer's part numbers are 9205 and 9208. The measurements are really close and they look similar visually. *fingers crossed*

 

[Exceter]

Is there any way to use a DOM or CompactFlash on a 50pin scsi controller? I'm hoping to replace both by XT-IDE and the original floppy controller in my IBM 5150 with this card to regain a slot. I want to use a vintage SCSI drive but, if possible, I'd also like to have some modern storage as well that I can use to back up the SCSI drive with xcopy in case it stops working. It would be really nice if I could do both with the same controller.

 

[Eudimorphodon]

The standard retrocomputing-grade Flash replacement for SCSI drives is the SCSI2SD.

 

[Exceter]

The standard retrocomputing-grade Flash replacement for SCSI drives is the SCSI2SD.

Thanks!

 

[Exceter]

Confirmed: Keystone Electronics part number 9208 is the correct bracket for this card. If anyone needs one, it can be found on Mouser here: https://www.mouser.com/ProductDetai...=/ha2pyFadugmSy7txtz1o4U4NZhDHKohBhamqFLKsoI=

 

[Exceter]

Sadly, this card appears to be incompatible with my 286 accelerator card.