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Re: Xebec controller and SCSI drive

Glenn Jones wrote:

John Van Winkle wrote:


Has anyone ever tried using a SCSI drive on one of these controllers?
Are the disks necessary to set up the drive?



Hi John, it has been many years since I used my Xebec Apple SASI card.

If memory surves me correctly I first used it with a SASI to MFM controller
board.  I had it hooked up to a 10MB IBM (ST506) drive. A company called
Shreve systems sold the converter. Next i put a SCSI to MFM board on the
same drive (also from shreve). I still have both convereter boards.

Later on I bought a ROM upgrade for the card from a company called STS
systems? That allowed the card to work with a ST225 60MB SCSI drive I
bought. I recall it supported ProDOS and CP/M perhaps Dos 3.3 as well. I
stll have the drive but it doesn't always spin up.

I also recall I think I needed to supply the drive geometry and they setup
the ROM for me.

At onetime I think I also took a stab a disassembling the ROM to see how it
all worked ..

ah .. the good old days

Glenn




Here is a corrected version to the previous note
If memory surved me correctly ... :o) I first used it with a SASI to MFM controller board. I had it hooked up to a 10MB IBM (ST506) drive. A company called Shreve systems sold the converter. 
The original xebec ROM was DOS 3.3 only.
I bought a ROM upgrade for the card from a company called Advanced Technical Services (ATS). That allowed the card to work with the same (SASI/MFM) drive (i think) but as a ProDOS device.
I also bought a SCSI/MFM converter to put on the same drive (also from shreve). I am pretty sure it worked with the ATS ROM.
Later I bought a seagate ST277N 60MB SCSI drive. I recall it supported ProDOS and CP/M perhaps Dos 3.3 as well. I stll have the drive but it doesn't always spin up.
In order to get the seagate to work on the Xebec controller I definately needed the SLS rom.
I also recall I think I needed to supply the drive geometry and they setup the ROM for me.
It was 15+ years ago and that's all I can recall at the moment .. I was really into SCSI back then ... I even bought and still have the original SCSI spec document. 


Glenn